Arun Hardness Testers, Model B-3000 (H) & Model 3000 (O) are precision engineered confirming to IS : 22281 – 1968, BS : 240 and ASTM : E 10, however B-3000 (H) & B-3000 (O) are most suitable for production testing. These machines are designed to measure hardness of castings, forgings, other metals and alloys of all kinds, hard or soft, whether flat, round or irregular in shape. Basic machine design & operation similar to B-3000 (H). In addition ‘optical device’ with 14 x magnification provided in front to project dia of ball impression on glass screen with a micrometer measuring system with 0.01mm accuracy. The indentor swivels & projects dia of ball impression immediately after unloading operation which avoids additional time for measurement of ball impression.

All ARUN Electronic Universal Testing Machines are closely controlled for sensitivity, accuracy and calibartion during every stage of manufacture. Every machine is then calibrated over each of its measuring ranges in accordance with the procedure laid down in British standards. 1610 : Part1 : 1992 and IS : 1828 : Part1 : 1991. ARUN Electronic Universal Testing Machine comply with Grade "A" of BS : 1610 : Part1 : 1992 and class 1 of IS-1828-Part-1:1991. An accuracy of +1% is guaranted from 2% to 100% of the capacity of the machine. Below 20% of the selected range, the maximum permissible error is 0.2% of the full load reading.

Features :

• Loading accuracy as high as + 1%.
• Straining at variable speeds to suit a wide range of materials.
• Printer & PC graphs enable study the behavior of the materials.
• Motor driven threaded columns for quick effortless adjustment of middle crosshead to facilitate rapid fixing of test specimen.
• Continuous roll autographic recorder supplied as standard to enable study of the behavior of  materials
• Simplicity in reading because of digital readouts.
• Wide range of standard and special accessories, including load stabilizer.
• Easy change from plain to threaded and screwed specimens.
• Large effective clearance between columns enables testing of standard specimens as well as structures.
• Simple controls for easy of operation.
• Robust straining frame of an extremely rigid construction.
• Safe operation ensured be means of safety devices.
• Fully enclosed and protected pressure transducer. 
• RS 232 serial port to transfer data to computer for analysis/storage evaluation etc.
• Manual control & release valve operation.

Arun Electronic Universal Testing Machines are closely controlled for sensitivity, accuracy and calibration during every stage of manufacture. Every machine is then calibrated over each of its measuring ranges in accordance with the procedure laid down in British standards. 1610 : Part1 : 1992 and IS : 1828 : Part1 : 1991. Arun Electronic Universal Testing Machine comply with Grade "A" of BS : 1610 : Part1 : 1992 and class 1 of IS-1828-Part-1:1991. An accuracy of +1% is guaranted from 2% to 100% of the capacity of the machine. Below 20% of the selected range, the maximum permissible error is 0.2% of the full load reading

Features :

•  Loading accuracy as high as + 1%.
• Straining at variable speeds to suit a wide range of materials.
•  Printer & PC graphs enable study the behavior of the materials.
•  Motor driven threaded columns for quick effortless adjustment of middle crosshead to facilitate rapid fixing of test specimen.
• Continuous roll autographic recorder supplied as standard to enable study of the behavior of materials
• Simplicity in reading because of digital readouts.
• Wide range of standard and special accessories, including load stabilizer.
• Easy change from plain to threaded and screwed specimens.
• Large effective clearance between columns enables testing of standard specimens as well as structures.
• Simple controls for easy of operation.
• Robust straining frame of an extremely rigid construction.
• Safe operation ensured be means of safety devices.
• Fully enclosed and protected pressure transducer.
• RS 232 serial port to transfer data to computer for analysis/storage evaluation etc.
• Manual control & release valve operation.

Arun electronic universal testing machine is designed for testing metals and other materials under tension, compression bending, transverse and shear loads. Hardness test on metals can also conducted. All arun electronic universal testing machines are closely controlled for sensitivity, accuracy and calibartion during every stage of manufacture. Every machine is then calibrated over each of its measuring ranges in accordance with the procedure laid down in british standards. 1610 : part1 : 1992 and is : 1828 : part1 : 1991.Arun electronic universal testing machine comply with grade "a" of bs : 1610 : part1 : 1992 and class 1 of is-1828-part-1:1991. An accuracy of +1% is guaranted from 2% to 100% of the capacity of the machine.Below 20% of the selected range, the maximum permissible error is 0.2% of the full load reading. Features :loading accuracy as high as + 1%.straining at variable speeds to suit a wide range of materials.printer & pc graphs enable study the behavior of the materials.motor driven threaded columns for quick effortless adjustment of middle crosshead to facilitate rapid fixingof test specimen.continuous roll autographic recorder supplied as standard to enable study of the behavior of materialssimplicity in reading because of digital readouts.wide range of standard and special accessories, including load stabilizer.easy change from plain to threaded and screwed specimens.large effective clearance between columns enables testing of standard specimens as well as structures.simple controls for easy of operation.robust straining frame of an extremely rigid construction.safe operation ensured be means of safety devices.fully enclosed and protected pressure transducer. rs 232 serial port to transfer data to computer for analysisstorage evaluation etc. manual control & release valve operation.

ARUN Hardness Testers, Model RAS, RAB-1, RAB-250, TWIN are manually operated. All these models are suitable for testing hardness of metals sand alloys of all kinds hard or soft, whether flat, round, or irregular shape. These testers are simple in design and easy to operate, yet sensitive & accurate. Various models from the wide range are suitable for schools, laboratories, tool-rooms, inspection, heat treatment departments, factories etc.These testers strictly confirms to IS : 1586-2000, ASTM : E 18 for Rockwell Superficial Test and IS : 2281 -2005, ASTM : E 10 for Brinell test.

 

MODEL: AI-RAB TWIN

 

Automatic load selection with automatic zero setting dial gauge.

 

Manual operation.

 

Diamond holder is guided in a ball cage, which enables testing of small pins having dia. Less than 6 mm (up to 3mm dia.)

Torsion Testing Machine is designed for conducting torsion and twist on various metal wires, tubes, sheet materials torque measurement is by pendulum dyanometer system. 

• Torque ranges can be adjusted by auto torque selector. 
• Torque can be applied to specimen by geared motor through gear box. 
• Autographic recorder gives the relation between torque and angle of twist.   
• The accuracy of torque indication is ±1of the true torque. 

Principal : Rockwell & Rockwell Superficial tests consists of forcing an indentor (Diamond or Ball) into the surface of a test piece in two steps i.e. first with preliminary test force and thereafter with additional test force and then measuring depth of indentation after removal of additional test force (Remaining preliminary test force active) for measurement of hardness value.

Brinell test consists of forcing a hardened ball into surface of a test piece with a specified test-force and measuring the diameter of indentation for evaluation of Brinell hardness number.

 

Operation :

• For Rockwell & Rockwell Superficial Test : In case of 'RASN' series machines for Rockwell & Rockwell superficial tests a preliminary test force in first applied and then indicator is automatically set for zero. Quickly thereafter an additional test force is applied without removing the preliminary test force. When the penetration is stabilised, the additional test force is removed and the hardness number is shown directly on the indicator.
• For Brinell Test : The operation is exactly same as above. However, the diameter of impression is measured outside of machine by Brinell microscope. Brinell hardness number is found out by referring corresponding hardness tables showing hardness number against dia. of indentation for specified ball diameter and test force.

Rockwell & Rockwell Superficial tests consists of forcing an indentor (Diamond or Ball) into the surface of a test piece in two steps i.e. first with preliminary test force and thereafter with additional test force and then measuring depth of indentation after removal of additional test force (Remaining preliminary test force active) for measurement of hardness value.

Brinell test consists of forcing a hardened ball into surface of a test piece with a specified test-force and measuring the diameter of indentation for evaluation of Brinell hardness number.

Application : Fatigue Testing Machines are used to test the fatigue strength of materials and to draw S-N diagram by Research Institution Laboratories, Material manufacturers, and various industries.

Models : AI-FTM8

 

Accuracy & Calibration :This machine conforms to requirement of IS : 5075 - 1969 Standards Salient Features :

• An interlocking system provided puts off the motor at specimen failure
• Light weight, compact size and very simple design
• Table model, no need of foundation
• Simple lever system of changing load
• Calibration is in Nm

"AI" Erichsen tester is designed to carry out Erichsen Cupping test on metals. Quick clamping and manual facilitates faster and trouble free working of the machine.

 

Technical Data :

• Width of Sample mm -90, 70,  
• Thickness of sample mm- 0.1 - 2
• Lest Count mm -0.01
• Overall dimension (approx) mm -450 x 500 x 500

ARUN Universal Testing Machines comply with Grade "A" of BS : 1610 : Part 1:1992 and class 1 of IS 1828 : (Part1) : 1991 An accuracy of + 1.0% is guaranteed from 20% from 20% of the load range selected to full load.

Arun universal testing machine is designed for testing materials and other materials under tension, compression bending, transverse and shear loads.Aii arun universal testing machines are closely controlled for sensitivity, accuracy and calibration during every stage of manufacture. Every machine is then calibrated over each of its measuring ranges in accordance with the procedure laid down in bs : 1610 : part 1 :1992 and is 1828 : (part 1) : 1991. Arun universal testing machines comply with grade "a" of bs : 1610 : part 1:1992 and class 1 of is 1828 : (part1) : 1991an accuracy of + 1.0% is guaranteed from 20% from 20% of the load range selected to full load. Features :loading accuracy as high as 1%straining at variable speeds to suit a wide range of materials.continuous roll autographic recorder supplied as standard to enable study of the behavior of materialsmotor driven threaded columns for quick effortless adjustment of lower cross-head-to facilitate rapid fixing of test specimen.high reading accuracy due to large size and design of dial.wide range of standard and special accessories, including load stabilizer.easy change from plain to threaded and screwed specimens. large effective clearance between columns enables testing of standards specimens as well as structures.simple controls for easy of operation.robust staining frame of an extremely rigid construction.safe operation ensured be means of safety devices.fully enclosed and protected pendulum.

Arun Hardness Testers, Model B-3000 (H) & Model 3000 (O) are precision engineered confirming to IS : 22281 – 1968, BS : 240 and ASTM : E 10, however B-3000 (H) & B-3000 (O) are most suitable for production testing. These machines are designed to measure hardness of castings, forgings, other metals and alloys of all kinds, hard or soft, whether flat, round or irregular in shape. Machine designed with a hydraulic power pack and control circuit for effortless loading unloading operation. A dial gauge in front measure depth of ball penetration. This facilites production testing within tolerance limits by compression method.

Testing range is very wide, from soft metal such as lead, upto the hardest,  like hardeness steel. Same hardness number is obtained on the same specimen, regardless of the load applied.

• The indication is tiny and allows testing of a precision finished part.
• Loading and unloading cycle is motorised.
• Thin sheet metal is perfectly tested because the load applied is very small.
• Built-in projection screen to get accurate results.

Rockwell & Rockwell Superficial tests consists of forcing an indentor (Diamond or Ball) into the surface
of a test piece in two steps i.e. first with preliminary test force and thereafter with additional test force
and then measuring depth of indentation after removal of additional test force (Remaining preliminary
test force active) for measurement of hardness value.
Brinell test consists of forcing a hardened ball into surface of a test piece with a specified test-force and
measuring the diameter of indentation for evaluation of Brinell hardness number.
Operation :
For Rockwell & Rockwell Superficial Test :
In case of RASN series machines for Rockwell & Rockwell superficial tests a preliminary test force in
first applied and then indicator is automatically set for zero. Quickly thereafter an additional test force
is applied without removing the preliminary test force. When the penetration is stabilised, the
additional test force is removed and the hardness number is shown directly on the indicator.
For Brinell Test :
The operation is exactly same as above. However, the diameter of impression is measured outside of
machine by Brinell microscope. Brinell hardness number is found out by referring corresponding
hardness tables showing hardness number against dia. of indentation for specified ball diameter and
test force.

ARUN new RASN series of Hardness Testing Machines come with much improved design and
look with following major design changes.
1) The machine body is having a taper front look and a big size dial gauge in the front. The machine is
powder coated for far better look. The paint shade do not fade and machine looks like new over
year.
2) The elevating screw of machine is guided in a hardened and ground bush, not allowing movement
of elevating screw more than 0.05 mm when raised to full height. The accessory is returned for years
together due to hardened bush.
3) A hardened and ground stepped bush is fixed on top of main screw for location and rest surface.
This guarantees no change in results due to rough handling of test table or test piece. It means a
trouble free long life machine accuracy.
4) An antifriction linear bearing with almost no clearance is provided for a perfect vertical movement
of loading plunger with minimum friction. This enable testing of small dia. pin or ball upto 3 mm
dia.
5) All machine models are provided with automatic zero setting dial gauge or digital readout. Hence
zero setting at every test is avoided.
6) All four models confirm to respective standard as under.
IS : 3804, BS 10109-2 & ASTM E-18 for Rockwell Test.
IS : 5073, BS 10189-2 & ASTM E-18 for Rockwell Superficial Test.
IS : 2281, BS 10003-2 & ASTM E-10 for Brinell Test.

Fatigue Testing Machines are used to test the fatigue strength of materials and to draw S-N diagram by Research Institution Laboratories, Material manufacturers, and various industries.
Models : AI-FTM8

Accuracy & Calibration :
This machine conforms to requirement of IS : 5075 1969 Standards

Salient Features :
An interlocking system provided puts off the motor
at specimen failure
Light weight, compact size and very simple design
Table model, no need of foundation
Simple lever system of changing load
Calibration is in Nm

Rockwell, Rockwell superficial & Rockwell cum Brinell tests consists of forcing an indentor (Diamond or Ball) into the surface of a test piece in two steps i.e. first with preliminary test force and thereafter with additional test force and then measuring depth of indentation after removal of additional test force (Remaining preliminary test force active) for measurement of hardness value.

RASNE series machines are suitable for Rockwell, Rockwell superficial & Rockwell cum Brinell tests. These are motorized digital Hardness testers having LCD display for easy hardness measurement. The results aredisplayed in 0.1 Rockwell unit for more accurate measurement.

 

ARUN's new 'RASNE' series of Hardness Testing Machines come with much improved design & look with following major design changes.

• This is motorized machine having automatic loading/unloading cycle suitable for production testing.
• The machine body is having a taper front look and a large size read-out in the front. The machine is
• powder coated for better look. The paint shade do not fade and machine looks like new over year.
• The elevating screw of machine is guided in a hardened and ground bush, not allowing movement of elevating screw more than 0.05 mm when raised to full height. The accessory is retained for years together due to hardened bush.
• A hardened and ground stepped bush is fixed on top of main screw for location and rest surface. This guarantees no change in results due to rough handling of test table or test piece. It means a trouble free long life machine accuracy.
• An antifriction linear bearing with almost no clearance is provided for a perfect vertical movement of loading plunger with minimum friction. This enables testing of small dia. Pin or ball upto 3 mm dia.
• These models are provided with automatic working cycle and digital LCD display with 0.1 Rockwell resolution. This insures productivity with better accuracy.
• IS:1586:2000 for Rockwell and superficial test. IS:2281:2005 for Brinell Hardness Test.

Features:
Torsion Testing Machine is designed for conducting torsion and twist on various metal wires, tubes, sheetmaterials torque measurement is by pendulum dyanometer system.
Torque ranges can be adjusted by autotorque selector.
Torque can be applied to specimen by geared motor through gear box.
Autographic recorder gives the relation between torque and angle of twist.
The accuracy of torque indication is 1of the true torque.

Features:

Loading accuracy as high as 1%.
Straining roll autographic recorder supplied as standard to enable study of the behaviour of materials.
Motor driven threaded columns for quick effortless adjustment of lower Crosshead to facilitate rapid fixing of test specimen.
High reading accuracy due to large size and design of dial.
Wide range of standard and special accessories, including load stabilizer.
Easy change from plain to threaded and screwed specimens.
Large effective clearance between columns enables testing of
standard specimens as well as structures.
Simple controls for ease of operation.
Robust straining frame of an extremely rigid construction.
Safe operation ensured by means of safety devices.
Fully enclosed and protected pendulum.

Principal of Operation:

Operation of the machines is by hydraulic transmission of load from the test specimen to a separately housed load indicator. The hydraulic system is ideal since it replaces transmission of load through levers and knife edges, which are prone to wear and damage due to shock on rupture of test pieces.
Load is applied by a hydrostatically lubricated ram. Main cylinder pressure is transmitted to the cylinder of the pendulum dynamometer system housed in the control panel. The cylinder of the dynamometer is also of self-lubricating design. The load transmitted to the cylinder of the dynamometer is transferred t hrough a lever system to a pendulum. Displacement of the pendulum actuates the rack and pinion mechanism which operates the load indicator pointer and the autographic recorder. The deflection of the pendulum represent the absolute load applied on the test specimen.Return movement of the pendulum is effectively damped to absorb energy in the event of sudden breakage of a specimen.

This consists of a hydraulic cylinder motor with chain and sprocket drive and a table coupled with the ram of the hydraulic cylinder, mounted on to a robust base. The cylinder and the ram are individually lapped to eliminate friction. The upper cross-head is rigidly fixed to the table by two straigh columns. The lower cross-head is connected to two screwed columns which are driven by a motor. Axial loading of the ram is ensured be reveling the cylinder and ram of of any possible side loading by the provision of ball seatings.
An elongation scale with a minimum graduation of 1 mm, is provided to measure the deformation of the specimen.

Tension test is conducted by gripping the test specimen between the upper and lower cross-heads,
Compression, transverse, bending, shear and hardness tests are conducted between the lower cross head and the table.
The lower cross-head can be raised or lowered rapidly by operating the screwed columns thus facilitating ease of fixing of the test specimen.
Control Panel :
The control Panel consists of a power pack complete with drive motor and an oil tank, control valves a pendulum dynamometer a load indicator system and an autographic recorder.

Power Pack :
The power pack generates the maximum pressure of 200 kgf/cm2 the hydraulic pump provides continuously non-pulsating oil flow. Hence the load application is very smooth.
Hydraulic Controls :
Hand operates wheels are used to control the flow to and from the hydraulic cylinder. The regulation of oil flow is infinitely variable incorporated in the hydraulic system is a regulating valve which maintains a practically constant rate of piston movement. Control by this valve allows extensometer readings to be taken.

Application:

ARUN Universal Testing Machine is designed for testing materials and other materials under tension, compression bending, transverse and shear loads.

Principal of Operation :

Operation of the machines is by hydraulic transmission of load from the test specimen to a separately housed load indicator. The hydraulic system is ideal since it replaces transmission of load through levers and knife edges, which are prone to wear and damage due to shock on rupture of test pieces.
Load is applied by a hydrostatically lubricated ram. Main cylinder pressure is transmitted to the cylinder of the pendulum dynamometer system housed in the control panel. The cylinder of the dynamometer is also of self-lubricating design. The load transmitted to the cylinder of the dynamometer is transferred through a lever system to a pendulum. Displacement of the pendulum actuates the rack and pinion mechanism which operates the load indicator pointer and the autographic recorder. The deflection of the pendulum represent the absolute load applied on the test specimen.
Return movement of the pendulum is effectively damped to absorb energy in the event of sudden breakage of a specimen

Machine consists of Straining Unit:

This consists of a hydraulic cylinder motor with chain and sprocket drive and a table coupled with the ram of the hydraulic cylinder, mounted on to a robust base. The cylinder and the ram are individually lapped to eliminate friction. The upper cross-head is rigidly fixed to the table by two straigh columns. The lower cross-head is connected to two screwed columns which are driven by a motor. Axial loading of the ram is ensured be reveling the cylinder and ram of of any possible side loading by the provision of ball seatings.
An elongation scale with a minimum graduation of 1 mm, is provided to measure the deformation of t the specimen.
Tension test is conducted by gripping the test specimen between the upper and lower cross-heads,
Compression, transverse, bending, shear and hardness tests are conducted between the lower cross head and the table.
The lower cross-head can be raised or lowered rapidly by operating the screwed columns thus facilitating ease of fixing of the test specimen.

Control Panel :

The control Panel consists of a power pack complete with drive motor and an oil tank, control valves a pendulum dynamometer a load indicator system and an autographic recorder.
Power Pack :
The power pack generates the maximum pressure of 200 kgf/cm2 the hydraulic pump provides continuously non-pulsating oil flow. Hence the load application is very smooth.
Hydraulic Controls :
Hand operates wheels are used to control the flow to and from the hydraulic cylinder. The regulation of oil flow is infinitely variable incorporated in the hydraulic system is a regulating valve which maintains a practically constant rate of piston movement. Control by this valve allows extensometer readings to be taken.

Load Indicator System :
This system consists of a large dial and a pointer. A dummy pointer is provided to register the maximum load reached during the test. Different measuring ranges can be selected by operating the range selection knob. An overload trip switch is incorporated which automatically cuts out the pump motor when the load range in use is exceeded.
Pendulum Dynamometer :
This unit permits selection of favorable hydraulic ratios producing relatively small frictional forces. Pressurised oil in the loading cylinder pushes up the measuring piston proportionately and actuates the special dynamometersystem. The piston is constantly rotated to eliminate friction. The dynamometer system is also provided with an integral damper and ensures high reliability of operation. The load transmitted to the dynamometer is transferred through a pendulum to the load indicator.
Autographic Continuous Roll Load-Elongation Recorder :
This unit is of the pen and drum type and is supplied as standard. The horizontal motion of the pen produces the load ordinate of the diagram and the drum rotation produces the extension ordinates in the ration of either 1:5 or 1:10.

Features :
Loading accuracy as high as + 1%.
Straining at variable speeds to suit a wide range of materials.
Printer & PC graphs enable study the behavior of the materials.
Motor driven threaded columns for quick effortless adjustment of middle crosshead to
facilitate rapid fixing
of test specimen.
Continuous roll autographic recorder supplied as standard to enable study of the behavior
of materials
Simplicity in reading because of digital readouts.
Wide range of standard and special accessories, including load stabilizer.
Easy change from plain to threaded and screwed specimens.
Large effective clearance between columns enables testing of standard specimens as well as
structures.
Simple controls for easy of operation.
Robust straining frame of an extremely rigid construction.
Safe operation ensured be means of safety devices.
Fully enclosed and protected pressure transducer.
RS 232 serial port to transfer data to computer for analysis/storage evaluation etc.
Manual control & release valve operation.
Application :
ARUN Electronic Universal Testing Machine is designed for testing metals and other materials under
tension, compression bending, transverse and shear loads. Hardness test on metals can also conducted.
Principal of Operation :
Operation of the machine is by hydraulic transmission of load from the test specimen through pressure
transducer to a separately house load indicator. The system is ideal since it replaces transmission of load
through levers and knife edges, which are prone to wear and damage due to shock on rupture of test
pieces.
Load is applied by a hydrostatically lubricated ram. Main cylinder pressure is transmitted to the pressure
transducer housed in the control panel. The transducer gives the signal to the electronic display unit
corresponding to the load exerted by the main ram.Simultaneously the digital electronic fitted on the
straining unit gives the mechanical displacement to the electronic display unit. Both the signals are
processed by the microprocessor and load and displacement is displayed on the digital readouts
simultaneously.
Machine consists of :
Straining Unit :
This consists of a cylinder motor with chain and sprocket drive and a table coupled with the ram of the
hydraulic cylinder, mounted on to a robust base. The cylinder and the ram are individually lapped to
eliminate friction. The upper crosshead is rigidly fixed to the table by two strenthened columns.
The lower crosshead is connected to two screwed columns which are driven by a motor. Axial loading of
the ram is ensured by relieving the cylinder and ram of any possible side loading by the provision of ball
seating.
An displacement scale with a minimum graduation of 1mm, is provided to measure the deformation of the
specimen.
Tension test is conducted by gripping the test specimen between the upper and lower cross-heads and the
table.
The lower cross-head can be raised or lowered rapidly by operating the screwed columns, thus facilitating
ease of fixing of the test specimen.
Control Panel :
The control Panel consists of a power pack complete with drive motor and an oil tank, control valves and
electronic display unit.
Power Pack :
The power pack generates the maximum pressure of 200 kgf/cm2. The hydraulic pump provides
continuously non-pulsating oil flow. Hence the load application is very smooth.
Hydraulic Controls :
Hand operated wheels are used to control the flow to and from the hydraulic cylinder. The regulation of oil
flow is infinitely variable. Incorporated in the hydraulic system is a regulating valve, which maintains a
practically constant rate of piston movement. Control by this valve allows extensometer readings to be
taken.
Electronic Control Unit :(Series Universal 2001-UTE)
Microprocessor based panel incorporating state of art technology wiyh following features.
Front panel membrane type key board for machine operation with numeric keys for data entry.
7- segment display.
Data entry with numeric keyboard of test parameters including speds, rupture % peak, preload, modulus
data,
test data & specimen data etc.
20input data set strorage, 50 results storage maintains sata results during power off.
Batch test facility for generating batch & statistic result using same data set.
RS 232C serial port, Optional windows based software available for
On line graph on PC. Data analysis, statistics, point tracing superimposing graphs to compare with
standard,
zooming graph etc.
Printer port for printer interface with
Graph & result printout. Test certificate printout .
Batch Certificate printout .Simple statistic printout.
Optional Software Packages on PC :
The UNIVERSAL 2001 UTE series control panel can be hooked to any PC using RS-232 communication
port. ARUN offers different exhaustive application, Window based software packages with real time graph
on PC to enable the user to effectively evaluated different parameters.
The feature include :
Real time graph, User friendly software.
Extensive graphics on screen for curve plotting, magnification and zooming.
Software features includes Graph comparison, point tracing facility. Different units selection for load &
displacement.
Statistical evaluation includes with water fall dig. Mean deviation, frequency distribution, Skew dig.,
Histogram. Also calculates max. value, min. value, Mean value, Variance, Standard Deviation. (Other
statistical parameters
on request). Selectable batch & statistical printouts.
Evaluation of wide range of user selectable parameters such as % elongation, % reduction in area,
youngs
modulus, yield stress, proof stress etc.
Software packages for shear, Bend, Torsion, Rubber, Textile testing etc.
Custom built application software to suit customer requirements.
Accuracy and Calibration :
All ARUN Electronic Universal Testing Machines are closely controlled for sensitivity, accuracy and
calibartion during every stage of manufacture. Every machine is then calibrated over each of its measuring
ranges in accordance with the procedure laid down in British standards. 1610 : Part1 : 1992 and IS : 1828 :
Part1 : 1991.
ARUN Electronic Universal Testing Machine comply with Grade A of BS : 1610 : Part1 : 1992 and class 1
of IS-1828-Part-1:1991. An accuracy of +1% is guaranted from 2% to 100% of the capacity of the machine.
Below 20% of the selected range, the maximum permissible error is 0.2% of the full load reading.

UTE Panel/PC Controlled Machine, Servo Controlled Model available.
It is with motorised control valve & automatic operation with given loading /elongation rate.

'ARUN' Portable Rockwell Hardness Tester is developed to meet the demands of a light weight instrument which can be used to carry out tests by a universally recognised method of Hardness testing.

 

This hardness tester can be used in variety of applications and is readialy adjustable to a wide range of sizes and shapes which are difficult to test in a standard table model hardness tester.

The machine is designed for carrying out Rockwell tests comparable to table model hardness tester because, the basic things, such as shape of penetrator, method of penetration, measurement and loads are same in both systems.

The photograph on the back side gives the general arrangement of the hardness tester.The system carries a weight bar (8) pivoted at central point. When the load is applied by the loading screw (9), at one end of this weigh bar, it is deflected and the other end of this bar carrying penetrator forces down into the test specimen.

This deflection of weight bar which is proportional to the applied load is indicated on the loading dial indicator (1). Besides this loading dial indicator, there is one penetration measuring indicator (14) which measures the actual penetration of the penterator into the test specimen is read directly on this indicator.

Torsion Testing Machine is designed for conducting torsion and twist on various metal wires, tubes, sheet materials torque measurement is by pendulum dyanometer system. Torque ranges can be adjusted by auto torque selector. Torque can be applied to specimen by geared motor through gear box. Autographic recorder gives the relation between torque and angle of twist. The accuracy of torque indication is 1of the true torque.

The pendulum Impact Tester, Model IT-30 is designed for conducting Izod, Charpy test. The test methods confirm to  BS : 131 : Part 4-1972 (Amended 15 Aug. 1993) BSEN : 10045-2 : 1993 The Pendulum is mounted on antifriction bearings. It has two starting positions, the upper one for Charpy & the lower one for Izod testing. On release, the pendulum swings down to brake the specimen and the energy absorbed in doing so is measured as the difference between the height of drop before rupture of the test specimen and is read from the maximum pointer position on the dial scale. (It is read on digital readout in case of electronic machines.) There are two strikers and one combined support available for fitting in to the pendulum and on to the base of the machine for the Izod, Charpy test respectively, Changing from one striker to another is achieved simply by fixing the new striker into it's position.

he pendulum Impact Tester, Model IT-30 is designed for conducting Izod, Charpy test. The test methods confirm to BS : 131 : Part 4-1972 (Amended 15 Aug. 1993) BSEN : 10045-2 : 1993

The Pendulum is mounted on antifriction bearings. It has two starting positions, the upper one for Charpy & the lower one for Izod testing. On release, the pendulum swings down to brake the specimen and the energy absorbed in doing so is measured as the difference between the height of drop before rupture of the test specimen and is read from the maximum pointer position on the dial scale.

(It is read on digital readout in case of electronic machines.)

There are two strikers and one combined support available for fitting in to the pendulum and on to the base of the machine for the Izod, Charpy test respectively, Changing from one striker to another is achieved simply by fixing the new striker into its position.

ARUN Hardness Testers, Model RAS, RAB-1, RAB-250, TWIN are manually operated. All these models are suitable for testing hardness of metals sand alloys of all kinds hard or soft, whether flat, round, or irregular shape. These testers are simple in design and easy to operate, yet sensitive & accurate. Various models from the wide range are suitable for schools, laboratories, tool-rooms, inspection, heat treatment departments, factories etc.These testers strictly confirms to IS : 1586-2000, ASTM : E 18 for Rockwell Superficial Test and IS : 2281 -2005, ASTM : E 10 for Brinell test.

Arun Hardness Testers, Model B-3000 (H) & Model 3000 (O) are precision engineered confirming to IS : 22281 – 1968, BS : 240 and ASTM : E 10, however B-3000 (H) & B-3000 (O) are most suitable for production testing. These machines are designed to measure hardness of castings, forgings, other metals and alloys of all kinds, hard or soft, whether flat, round or irregular in shape. Basic machine design & operation similar to B-3000 (H). In addition ‘optical device’ with 14 x magnification provided in front to project dia of ball impression on glass screen with a micrometer measuring system with 0.01mm accuracy. The indentor swivels & projects dia of ball impression immediately after unloading operation which avoids additional time for measurement of ball impression.

All ARUN Electronic Universal Testing Machines are closely controlled for sensitivity, accuracy and calibartion during every stage of manufacture. Every machine is then calibrated over each of its measuring ranges in accordance with the procedure laid down in British standards. 1610 : Part1 : 1992 and IS : 1828 : Part1 : 1991. ARUN Electronic Universal Testing Machine comply with Grade "A" of BS : 1610 : Part1 : 1992 and class 1 of IS-1828-Part-1:1991. An accuracy of +1% is guaranted from 2% to 100% of the capacity of the machine. Below 20% of the selected range, the maximum permissible error is 0.2% of the full load reading.

Features :

• Loading accuracy as high as + 1%.
• Straining at variable speeds to suit a wide range of materials.
• Printer & PC graphs enable study the behavior of the materials.
• Motor driven threaded columns for quick effortless adjustment of middle crosshead to facilitate rapid fixing of test specimen.
• Continuous roll autographic recorder supplied as standard to enable study of the behavior of  materials
• Simplicity in reading because of digital readouts.
• Wide range of standard and special accessories, including load stabilizer.
• Easy change from plain to threaded and screwed specimens.
• Large effective clearance between columns enables testing of standard specimens as well as structures.
• Simple controls for easy of operation.
• Robust straining frame of an extremely rigid construction.
• Safe operation ensured be means of safety devices.
• Fully enclosed and protected pressure transducer. 
• RS 232 serial port to transfer data to computer for analysis/storage evaluation etc.
• Manual control & release valve operation.

Arun Electronic Universal Testing Machines are closely controlled for sensitivity, accuracy and calibration during every stage of manufacture. Every machine is then calibrated over each of its measuring ranges in accordance with the procedure laid down in British standards. 1610 : Part1 : 1992 and IS : 1828 : Part1 : 1991. Arun Electronic Universal Testing Machine comply with Grade "A" of BS : 1610 : Part1 : 1992 and class 1 of IS-1828-Part-1:1991. An accuracy of +1% is guaranted from 2% to 100% of the capacity of the machine. Below 20% of the selected range, the maximum permissible error is 0.2% of the full load reading

Features :

•  Loading accuracy as high as + 1%.
• Straining at variable speeds to suit a wide range of materials.
•  Printer & PC graphs enable study the behavior of the materials.
•  Motor driven threaded columns for quick effortless adjustment of middle crosshead to facilitate rapid fixing of test specimen.
• Continuous roll autographic recorder supplied as standard to enable study of the behavior of materials
• Simplicity in reading because of digital readouts.
• Wide range of standard and special accessories, including load stabilizer.
• Easy change from plain to threaded and screwed specimens.
• Large effective clearance between columns enables testing of standard specimens as well as structures.
• Simple controls for easy of operation.
• Robust straining frame of an extremely rigid construction.
• Safe operation ensured be means of safety devices.
• Fully enclosed and protected pressure transducer.
• RS 232 serial port to transfer data to computer for analysis/storage evaluation etc.
• Manual control & release valve operation.

Arun electronic universal testing machine is designed for testing metals and other materials under tension, compression bending, transverse and shear loads. Hardness test on metals can also conducted. All arun electronic universal testing machines are closely controlled for sensitivity, accuracy and calibartion during every stage of manufacture. Every machine is then calibrated over each of its measuring ranges in accordance with the procedure laid down in british standards. 1610 : part1 : 1992 and is : 1828 : part1 : 1991.Arun electronic universal testing machine comply with grade "a" of bs : 1610 : part1 : 1992 and class 1 of is-1828-part-1:1991. An accuracy of +1% is guaranted from 2% to 100% of the capacity of the machine.Below 20% of the selected range, the maximum permissible error is 0.2% of the full load reading. Features :loading accuracy as high as + 1%.straining at variable speeds to suit a wide range of materials.printer & pc graphs enable study the behavior of the materials.motor driven threaded columns for quick effortless adjustment of middle crosshead to facilitate rapid fixingof test specimen.continuous roll autographic recorder supplied as standard to enable study of the behavior of materialssimplicity in reading because of digital readouts.wide range of standard and special accessories, including load stabilizer.easy change from plain to threaded and screwed specimens.large effective clearance between columns enables testing of standard specimens as well as structures.simple controls for easy of operation.robust straining frame of an extremely rigid construction.safe operation ensured be means of safety devices.fully enclosed and protected pressure transducer. rs 232 serial port to transfer data to computer for analysisstorage evaluation etc. manual control & release valve operation.

ARUN Hardness Testers, Model RAS, RAB-1, RAB-250, TWIN are manually operated. All these models are suitable for testing hardness of metals sand alloys of all kinds hard or soft, whether flat, round, or irregular shape. These testers are simple in design and easy to operate, yet sensitive & accurate. Various models from the wide range are suitable for schools, laboratories, tool-rooms, inspection, heat treatment departments, factories etc.These testers strictly confirms to IS : 1586-2000, ASTM : E 18 for Rockwell Superficial Test and IS : 2281 -2005, ASTM : E 10 for Brinell test.

 

MODEL: AI-RAB TWIN

 

Automatic load selection with automatic zero setting dial gauge.

 

Manual operation.

 

Diamond holder is guided in a ball cage, which enables testing of small pins having dia. Less than 6 mm (up to 3mm dia.)

Torsion Testing Machine is designed for conducting torsion and twist on various metal wires, tubes, sheet materials torque measurement is by pendulum dyanometer system. 

• Torque ranges can be adjusted by auto torque selector. 
• Torque can be applied to specimen by geared motor through gear box. 
• Autographic recorder gives the relation between torque and angle of twist.   
• The accuracy of torque indication is ±1of the true torque. 

Principal : Rockwell & Rockwell Superficial tests consists of forcing an indentor (Diamond or Ball) into the surface of a test piece in two steps i.e. first with preliminary test force and thereafter with additional test force and then measuring depth of indentation after removal of additional test force (Remaining preliminary test force active) for measurement of hardness value.

Brinell test consists of forcing a hardened ball into surface of a test piece with a specified test-force and measuring the diameter of indentation for evaluation of Brinell hardness number.

 

Operation :

• For Rockwell & Rockwell Superficial Test : In case of 'RASN' series machines for Rockwell & Rockwell superficial tests a preliminary test force in first applied and then indicator is automatically set for zero. Quickly thereafter an additional test force is applied without removing the preliminary test force. When the penetration is stabilised, the additional test force is removed and the hardness number is shown directly on the indicator.
• For Brinell Test : The operation is exactly same as above. However, the diameter of impression is measured outside of machine by Brinell microscope. Brinell hardness number is found out by referring corresponding hardness tables showing hardness number against dia. of indentation for specified ball diameter and test force.

Rockwell & Rockwell Superficial tests consists of forcing an indentor (Diamond or Ball) into the surface of a test piece in two steps i.e. first with preliminary test force and thereafter with additional test force and then measuring depth of indentation after removal of additional test force (Remaining preliminary test force active) for measurement of hardness value.

Brinell test consists of forcing a hardened ball into surface of a test piece with a specified test-force and measuring the diameter of indentation for evaluation of Brinell hardness number.

Application : Fatigue Testing Machines are used to test the fatigue strength of materials and to draw S-N diagram by Research Institution Laboratories, Material manufacturers, and various industries.

Models : AI-FTM8

 

Accuracy & Calibration :This machine conforms to requirement of IS : 5075 - 1969 Standards Salient Features :

• An interlocking system provided puts off the motor at specimen failure
• Light weight, compact size and very simple design
• Table model, no need of foundation
• Simple lever system of changing load
• Calibration is in Nm

"AI" Erichsen tester is designed to carry out Erichsen Cupping test on metals. Quick clamping and manual facilitates faster and trouble free working of the machine.

 

Technical Data :

• Width of Sample mm -90, 70,  
• Thickness of sample mm- 0.1 - 2
• Lest Count mm -0.01
• Overall dimension (approx) mm -450 x 500 x 500

ARUN Universal Testing Machines comply with Grade "A" of BS : 1610 : Part 1:1992 and class 1 of IS 1828 : (Part1) : 1991 An accuracy of + 1.0% is guaranteed from 20% from 20% of the load range selected to full load.

Arun universal testing machine is designed for testing materials and other materials under tension, compression bending, transverse and shear loads.Aii arun universal testing machines are closely controlled for sensitivity, accuracy and calibration during every stage of manufacture. Every machine is then calibrated over each of its measuring ranges in accordance with the procedure laid down in bs : 1610 : part 1 :1992 and is 1828 : (part 1) : 1991. Arun universal testing machines comply with grade "a" of bs : 1610 : part 1:1992 and class 1 of is 1828 : (part1) : 1991an accuracy of + 1.0% is guaranteed from 20% from 20% of the load range selected to full load. Features :loading accuracy as high as 1%straining at variable speeds to suit a wide range of materials.continuous roll autographic recorder supplied as standard to enable study of the behavior of materialsmotor driven threaded columns for quick effortless adjustment of lower cross-head-to facilitate rapid fixing of test specimen.high reading accuracy due to large size and design of dial.wide range of standard and special accessories, including load stabilizer.easy change from plain to threaded and screwed specimens. large effective clearance between columns enables testing of standards specimens as well as structures.simple controls for easy of operation.robust staining frame of an extremely rigid construction.safe operation ensured be means of safety devices.fully enclosed and protected pendulum.

Arun Hardness Testers, Model B-3000 (H) & Model 3000 (O) are precision engineered confirming to IS : 22281 – 1968, BS : 240 and ASTM : E 10, however B-3000 (H) & B-3000 (O) are most suitable for production testing. These machines are designed to measure hardness of castings, forgings, other metals and alloys of all kinds, hard or soft, whether flat, round or irregular in shape. Machine designed with a hydraulic power pack and control circuit for effortless loading unloading operation. A dial gauge in front measure depth of ball penetration. This facilites production testing within tolerance limits by compression method.

Testing range is very wide, from soft metal such as lead, upto the hardest,  like hardeness steel. Same hardness number is obtained on the same specimen, regardless of the load applied.

• The indication is tiny and allows testing of a precision finished part.
• Loading and unloading cycle is motorised.
• Thin sheet metal is perfectly tested because the load applied is very small.
• Built-in projection screen to get accurate results.

Rockwell & Rockwell Superficial tests consists of forcing an indentor (Diamond or Ball) into the surface
of a test piece in two steps i.e. first with preliminary test force and thereafter with additional test force
and then measuring depth of indentation after removal of additional test force (Remaining preliminary
test force active) for measurement of hardness value.
Brinell test consists of forcing a hardened ball into surface of a test piece with a specified test-force and
measuring the diameter of indentation for evaluation of Brinell hardness number.
Operation :
For Rockwell & Rockwell Superficial Test :
In case of RASN series machines for Rockwell & Rockwell superficial tests a preliminary test force in
first applied and then indicator is automatically set for zero. Quickly thereafter an additional test force
is applied without removing the preliminary test force. When the penetration is stabilised, the
additional test force is removed and the hardness number is shown directly on the indicator.
For Brinell Test :
The operation is exactly same as above. However, the diameter of impression is measured outside of
machine by Brinell microscope. Brinell hardness number is found out by referring corresponding
hardness tables showing hardness number against dia. of indentation for specified ball diameter and
test force.

ARUN new RASN series of Hardness Testing Machines come with much improved design and
look with following major design changes.
1) The machine body is having a taper front look and a big size dial gauge in the front. The machine is
powder coated for far better look. The paint shade do not fade and machine looks like new over
year.
2) The elevating screw of machine is guided in a hardened and ground bush, not allowing movement
of elevating screw more than 0.05 mm when raised to full height. The accessory is returned for years
together due to hardened bush.
3) A hardened and ground stepped bush is fixed on top of main screw for location and rest surface.
This guarantees no change in results due to rough handling of test table or test piece. It means a
trouble free long life machine accuracy.
4) An antifriction linear bearing with almost no clearance is provided for a perfect vertical movement
of loading plunger with minimum friction. This enable testing of small dia. pin or ball upto 3 mm
dia.
5) All machine models are provided with automatic zero setting dial gauge or digital readout. Hence
zero setting at every test is avoided.
6) All four models confirm to respective standard as under.
IS : 3804, BS 10109-2 & ASTM E-18 for Rockwell Test.
IS : 5073, BS 10189-2 & ASTM E-18 for Rockwell Superficial Test.
IS : 2281, BS 10003-2 & ASTM E-10 for Brinell Test.

Fatigue Testing Machines are used to test the fatigue strength of materials and to draw S-N diagram by Research Institution Laboratories, Material manufacturers, and various industries.
Models : AI-FTM8

Accuracy & Calibration :
This machine conforms to requirement of IS : 5075 1969 Standards

Salient Features :
An interlocking system provided puts off the motor
at specimen failure
Light weight, compact size and very simple design
Table model, no need of foundation
Simple lever system of changing load
Calibration is in Nm

Rockwell, Rockwell superficial & Rockwell cum Brinell tests consists of forcing an indentor (Diamond or Ball) into the surface of a test piece in two steps i.e. first with preliminary test force and thereafter with additional test force and then measuring depth of indentation after removal of additional test force (Remaining preliminary test force active) for measurement of hardness value.

RASNE series machines are suitable for Rockwell, Rockwell superficial & Rockwell cum Brinell tests. These are motorized digital Hardness testers having LCD display for easy hardness measurement. The results aredisplayed in 0.1 Rockwell unit for more accurate measurement.

 

ARUN's new 'RASNE' series of Hardness Testing Machines come with much improved design & look with following major design changes.

• This is motorized machine having automatic loading/unloading cycle suitable for production testing.
• The machine body is having a taper front look and a large size read-out in the front. The machine is
• powder coated for better look. The paint shade do not fade and machine looks like new over year.
• The elevating screw of machine is guided in a hardened and ground bush, not allowing movement of elevating screw more than 0.05 mm when raised to full height. The accessory is retained for years together due to hardened bush.
• A hardened and ground stepped bush is fixed on top of main screw for location and rest surface. This guarantees no change in results due to rough handling of test table or test piece. It means a trouble free long life machine accuracy.
• An antifriction linear bearing with almost no clearance is provided for a perfect vertical movement of loading plunger with minimum friction. This enables testing of small dia. Pin or ball upto 3 mm dia.
• These models are provided with automatic working cycle and digital LCD display with 0.1 Rockwell resolution. This insures productivity with better accuracy.
• IS:1586:2000 for Rockwell and superficial test. IS:2281:2005 for Brinell Hardness Test.

Features:
Torsion Testing Machine is designed for conducting torsion and twist on various metal wires, tubes, sheetmaterials torque measurement is by pendulum dyanometer system.
Torque ranges can be adjusted by autotorque selector.
Torque can be applied to specimen by geared motor through gear box.
Autographic recorder gives the relation between torque and angle of twist.
The accuracy of torque indication is 1of the true torque.

Features:

Loading accuracy as high as 1%.
Straining roll autographic recorder supplied as standard to enable study of the behaviour of materials.
Motor driven threaded columns for quick effortless adjustment of lower Crosshead to facilitate rapid fixing of test specimen.
High reading accuracy due to large size and design of dial.
Wide range of standard and special accessories, including load stabilizer.
Easy change from plain to threaded and screwed specimens.
Large effective clearance between columns enables testing of
standard specimens as well as structures.
Simple controls for ease of operation.
Robust straining frame of an extremely rigid construction.
Safe operation ensured by means of safety devices.
Fully enclosed and protected pendulum.

Principal of Operation:

Operation of the machines is by hydraulic transmission of load from the test specimen to a separately housed load indicator. The hydraulic system is ideal since it replaces transmission of load through levers and knife edges, which are prone to wear and damage due to shock on rupture of test pieces.
Load is applied by a hydrostatically lubricated ram. Main cylinder pressure is transmitted to the cylinder of the pendulum dynamometer system housed in the control panel. The cylinder of the dynamometer is also of self-lubricating design. The load transmitted to the cylinder of the dynamometer is transferred t hrough a lever system to a pendulum. Displacement of the pendulum actuates the rack and pinion mechanism which operates the load indicator pointer and the autographic recorder. The deflection of the pendulum represent the absolute load applied on the test specimen.Return movement of the pendulum is effectively damped to absorb energy in the event of sudden breakage of a specimen.

This consists of a hydraulic cylinder motor with chain and sprocket drive and a table coupled with the ram of the hydraulic cylinder, mounted on to a robust base. The cylinder and the ram are individually lapped to eliminate friction. The upper cross-head is rigidly fixed to the table by two straigh columns. The lower cross-head is connected to two screwed columns which are driven by a motor. Axial loading of the ram is ensured be reveling the cylinder and ram of of any possible side loading by the provision of ball seatings.
An elongation scale with a minimum graduation of 1 mm, is provided to measure the deformation of the specimen.

Tension test is conducted by gripping the test specimen between the upper and lower cross-heads,
Compression, transverse, bending, shear and hardness tests are conducted between the lower cross head and the table.
The lower cross-head can be raised or lowered rapidly by operating the screwed columns thus facilitating ease of fixing of the test specimen.
Control Panel :
The control Panel consists of a power pack complete with drive motor and an oil tank, control valves a pendulum dynamometer a load indicator system and an autographic recorder.

Power Pack :
The power pack generates the maximum pressure of 200 kgf/cm2 the hydraulic pump provides continuously non-pulsating oil flow. Hence the load application is very smooth.
Hydraulic Controls :
Hand operates wheels are used to control the flow to and from the hydraulic cylinder. The regulation of oil flow is infinitely variable incorporated in the hydraulic system is a regulating valve which maintains a practically constant rate of piston movement. Control by this valve allows extensometer readings to be taken.

Application:

ARUN Universal Testing Machine is designed for testing materials and other materials under tension, compression bending, transverse and shear loads.

Principal of Operation :

Operation of the machines is by hydraulic transmission of load from the test specimen to a separately housed load indicator. The hydraulic system is ideal since it replaces transmission of load through levers and knife edges, which are prone to wear and damage due to shock on rupture of test pieces.
Load is applied by a hydrostatically lubricated ram. Main cylinder pressure is transmitted to the cylinder of the pendulum dynamometer system housed in the control panel. The cylinder of the dynamometer is also of self-lubricating design. The load transmitted to the cylinder of the dynamometer is transferred through a lever system to a pendulum. Displacement of the pendulum actuates the rack and pinion mechanism which operates the load indicator pointer and the autographic recorder. The deflection of the pendulum represent the absolute load applied on the test specimen.
Return movement of the pendulum is effectively damped to absorb energy in the event of sudden breakage of a specimen

Machine consists of Straining Unit:

This consists of a hydraulic cylinder motor with chain and sprocket drive and a table coupled with the ram of the hydraulic cylinder, mounted on to a robust base. The cylinder and the ram are individually lapped to eliminate friction. The upper cross-head is rigidly fixed to the table by two straigh columns. The lower cross-head is connected to two screwed columns which are driven by a motor. Axial loading of the ram is ensured be reveling the cylinder and ram of of any possible side loading by the provision of ball seatings.
An elongation scale with a minimum graduation of 1 mm, is provided to measure the deformation of t the specimen.
Tension test is conducted by gripping the test specimen between the upper and lower cross-heads,
Compression, transverse, bending, shear and hardness tests are conducted between the lower cross head and the table.
The lower cross-head can be raised or lowered rapidly by operating the screwed columns thus facilitating ease of fixing of the test specimen.

Control Panel :

The control Panel consists of a power pack complete with drive motor and an oil tank, control valves a pendulum dynamometer a load indicator system and an autographic recorder.
Power Pack :
The power pack generates the maximum pressure of 200 kgf/cm2 the hydraulic pump provides continuously non-pulsating oil flow. Hence the load application is very smooth.
Hydraulic Controls :
Hand operates wheels are used to control the flow to and from the hydraulic cylinder. The regulation of oil flow is infinitely variable incorporated in the hydraulic system is a regulating valve which maintains a practically constant rate of piston movement. Control by this valve allows extensometer readings to be taken.

Load Indicator System :
This system consists of a large dial and a pointer. A dummy pointer is provided to register the maximum load reached during the test. Different measuring ranges can be selected by operating the range selection knob. An overload trip switch is incorporated which automatically cuts out the pump motor when the load range in use is exceeded.
Pendulum Dynamometer :
This unit permits selection of favorable hydraulic ratios producing relatively small frictional forces. Pressurised oil in the loading cylinder pushes up the measuring piston proportionately and actuates the special dynamometersystem. The piston is constantly rotated to eliminate friction. The dynamometer system is also provided with an integral damper and ensures high reliability of operation. The load transmitted to the dynamometer is transferred through a pendulum to the load indicator.
Autographic Continuous Roll Load-Elongation Recorder :
This unit is of the pen and drum type and is supplied as standard. The horizontal motion of the pen produces the load ordinate of the diagram and the drum rotation produces the extension ordinates in the ration of either 1:5 or 1:10.

Features :
Loading accuracy as high as + 1%.
Straining at variable speeds to suit a wide range of materials.
Printer & PC graphs enable study the behavior of the materials.
Motor driven threaded columns for quick effortless adjustment of middle crosshead to
facilitate rapid fixing
of test specimen.
Continuous roll autographic recorder supplied as standard to enable study of the behavior
of materials
Simplicity in reading because of digital readouts.
Wide range of standard and special accessories, including load stabilizer.
Easy change from plain to threaded and screwed specimens.
Large effective clearance between columns enables testing of standard specimens as well as
structures.
Simple controls for easy of operation.
Robust straining frame of an extremely rigid construction.
Safe operation ensured be means of safety devices.
Fully enclosed and protected pressure transducer.
RS 232 serial port to transfer data to computer for analysis/storage evaluation etc.
Manual control & release valve operation.
Application :
ARUN Electronic Universal Testing Machine is designed for testing metals and other materials under
tension, compression bending, transverse and shear loads. Hardness test on metals can also conducted.
Principal of Operation :
Operation of the machine is by hydraulic transmission of load from the test specimen through pressure
transducer to a separately house load indicator. The system is ideal since it replaces transmission of load
through levers and knife edges, which are prone to wear and damage due to shock on rupture of test
pieces.
Load is applied by a hydrostatically lubricated ram. Main cylinder pressure is transmitted to the pressure
transducer housed in the control panel. The transducer gives the signal to the electronic display unit
corresponding to the load exerted by the main ram.Simultaneously the digital electronic fitted on the
straining unit gives the mechanical displacement to the electronic display unit. Both the signals are
processed by the microprocessor and load and displacement is displayed on the digital readouts
simultaneously.
Machine consists of :
Straining Unit :
This consists of a cylinder motor with chain and sprocket drive and a table coupled with the ram of the
hydraulic cylinder, mounted on to a robust base. The cylinder and the ram are individually lapped to
eliminate friction. The upper crosshead is rigidly fixed to the table by two strenthened columns.
The lower crosshead is connected to two screwed columns which are driven by a motor. Axial loading of
the ram is ensured by relieving the cylinder and ram of any possible side loading by the provision of ball
seating.
An displacement scale with a minimum graduation of 1mm, is provided to measure the deformation of the
specimen.
Tension test is conducted by gripping the test specimen between the upper and lower cross-heads and the
table.
The lower cross-head can be raised or lowered rapidly by operating the screwed columns, thus facilitating
ease of fixing of the test specimen.
Control Panel :
The control Panel consists of a power pack complete with drive motor and an oil tank, control valves and
electronic display unit.
Power Pack :
The power pack generates the maximum pressure of 200 kgf/cm2. The hydraulic pump provides
continuously non-pulsating oil flow. Hence the load application is very smooth.
Hydraulic Controls :
Hand operated wheels are used to control the flow to and from the hydraulic cylinder. The regulation of oil
flow is infinitely variable. Incorporated in the hydraulic system is a regulating valve, which maintains a
practically constant rate of piston movement. Control by this valve allows extensometer readings to be
taken.
Electronic Control Unit :(Series Universal 2001-UTE)
Microprocessor based panel incorporating state of art technology wiyh following features.
Front panel membrane type key board for machine operation with numeric keys for data entry.
7- segment display.
Data entry with numeric keyboard of test parameters including speds, rupture % peak, preload, modulus
data,
test data & specimen data etc.
20input data set strorage, 50 results storage maintains sata results during power off.
Batch test facility for generating batch & statistic result using same data set.
RS 232C serial port, Optional windows based software available for
On line graph on PC. Data analysis, statistics, point tracing superimposing graphs to compare with
standard,
zooming graph etc.
Printer port for printer interface with
Graph & result printout. Test certificate printout .
Batch Certificate printout .Simple statistic printout.
Optional Software Packages on PC :
The UNIVERSAL 2001 UTE series control panel can be hooked to any PC using RS-232 communication
port. ARUN offers different exhaustive application, Window based software packages with real time graph
on PC to enable the user to effectively evaluated different parameters.
The feature include :
Real time graph, User friendly software.
Extensive graphics on screen for curve plotting, magnification and zooming.
Software features includes Graph comparison, point tracing facility. Different units selection for load &
displacement.
Statistical evaluation includes with water fall dig. Mean deviation, frequency distribution, Skew dig.,
Histogram. Also calculates max. value, min. value, Mean value, Variance, Standard Deviation. (Other
statistical parameters
on request). Selectable batch & statistical printouts.
Evaluation of wide range of user selectable parameters such as % elongation, % reduction in area,
youngs
modulus, yield stress, proof stress etc.
Software packages for shear, Bend, Torsion, Rubber, Textile testing etc.
Custom built application software to suit customer requirements.
Accuracy and Calibration :
All ARUN Electronic Universal Testing Machines are closely controlled for sensitivity, accuracy and
calibartion during every stage of manufacture. Every machine is then calibrated over each of its measuring
ranges in accordance with the procedure laid down in British standards. 1610 : Part1 : 1992 and IS : 1828 :
Part1 : 1991.
ARUN Electronic Universal Testing Machine comply with Grade A of BS : 1610 : Part1 : 1992 and class 1
of IS-1828-Part-1:1991. An accuracy of +1% is guaranted from 2% to 100% of the capacity of the machine.
Below 20% of the selected range, the maximum permissible error is 0.2% of the full load reading.

UTE Panel/PC Controlled Machine, Servo Controlled Model available.
It is with motorised control valve & automatic operation with given loading /elongation rate.

'ARUN' Portable Rockwell Hardness Tester is developed to meet the demands of a light weight instrument which can be used to carry out tests by a universally recognised method of Hardness testing.

 

This hardness tester can be used in variety of applications and is readialy adjustable to a wide range of sizes and shapes which are difficult to test in a standard table model hardness tester.

The machine is designed for carrying out Rockwell tests comparable to table model hardness tester because, the basic things, such as shape of penetrator, method of penetration, measurement and loads are same in both systems.

The photograph on the back side gives the general arrangement of the hardness tester.The system carries a weight bar (8) pivoted at central point. When the load is applied by the loading screw (9), at one end of this weigh bar, it is deflected and the other end of this bar carrying penetrator forces down into the test specimen.

This deflection of weight bar which is proportional to the applied load is indicated on the loading dial indicator (1). Besides this loading dial indicator, there is one penetration measuring indicator (14) which measures the actual penetration of the penterator into the test specimen is read directly on this indicator.

Torsion Testing Machine is designed for conducting torsion and twist on various metal wires, tubes, sheet materials torque measurement is by pendulum dyanometer system. Torque ranges can be adjusted by auto torque selector. Torque can be applied to specimen by geared motor through gear box. Autographic recorder gives the relation between torque and angle of twist. The accuracy of torque indication is 1of the true torque.

The pendulum Impact Tester, Model IT-30 is designed for conducting Izod, Charpy test. The test methods confirm to  BS : 131 : Part 4-1972 (Amended 15 Aug. 1993) BSEN : 10045-2 : 1993 The Pendulum is mounted on antifriction bearings. It has two starting positions, the upper one for Charpy & the lower one for Izod testing. On release, the pendulum swings down to brake the specimen and the energy absorbed in doing so is measured as the difference between the height of drop before rupture of the test specimen and is read from the maximum pointer position on the dial scale. (It is read on digital readout in case of electronic machines.) There are two strikers and one combined support available for fitting in to the pendulum and on to the base of the machine for the Izod, Charpy test respectively, Changing from one striker to another is achieved simply by fixing the new striker into it's position.

he pendulum Impact Tester, Model IT-30 is designed for conducting Izod, Charpy test. The test methods confirm to BS : 131 : Part 4-1972 (Amended 15 Aug. 1993) BSEN : 10045-2 : 1993

The Pendulum is mounted on antifriction bearings. It has two starting positions, the upper one for Charpy & the lower one for Izod testing. On release, the pendulum swings down to brake the specimen and the energy absorbed in doing so is measured as the difference between the height of drop before rupture of the test specimen and is read from the maximum pointer position on the dial scale.

(It is read on digital readout in case of electronic machines.)

There are two strikers and one combined support available for fitting in to the pendulum and on to the base of the machine for the Izod, Charpy test respectively, Changing from one striker to another is achieved simply by fixing the new striker into its position.

ARUN Hardness Testers, Model RAS, RAB-1, RAB-250, TWIN are manually operated. All these models are suitable for testing hardness of metals sand alloys of all kinds hard or soft, whether flat, round, or irregular shape. These testers are simple in design and easy to operate, yet sensitive & accurate. Various models from the wide range are suitable for schools, laboratories, tool-rooms, inspection, heat treatment departments, factories etc.These testers strictly confirms to IS : 1586-2000, ASTM : E 18 for Rockwell Superficial Test and IS : 2281 -2005, ASTM : E 10 for Brinell test.