Precitec Precision Machineries Pvt Ltd.

Peenya, Bangalore, Karnataka

The Horizontal Rotomill is an insitu machine developed for machining heavy components used in Power Plants, Ship building, Cement industry, Wind mills, Sugar Industry, huge chemical plants, refineries, etc. without having to move the job. The Horizontal Rotomill consists of a circular frame with spider arms which permit it to clamp on the surface of the job. At the center of the frame a rotating arm is located and this arm houses a rotary drive from an electric motor which can be infinitely variable depending upon requirement. At the end of rotary arm, the machining unit is suitably located. Depending upon the requirement of the machining operations of Horizontal Rotomill to be carried out suitable spindle unit with required axis movement slides/devices is selected. The special feature of the Horizontal Rotomill is, it doesn't require foundation and the machine is portable type so that the machine can be moved to the job. Special packing methods and containers are used to store the Horizontal Rotomill and for transportation when not in use.

Specifications

• Machining Range : 5000 to 10000 mm diameter
• Operations Possible : Flange Face milling, Grove machining, ID and OD machining of flanges.

• Hole Operations : Drilling, Boring, Counter Boring, Tapping etc.

the facing centering machine features spindle movement by hydraulic quill/hardened and ground guides. the facing centering machine comes in different options like the facing with traverse milling, cnc machine with facing and centring, center hole drilling/tapping and twin spindle facing centring.

specifications

• spindle power : 3 hp/ 5hp/7.5hp/10hp
• max. facing dia.: 40mm/70mm
• method of facing centring : plunge facing and centring.
• max job length : 250 /400/630/800/1000 mm
• job clamping : v and flat/ self centring vice
• table feed : hydraulic, optional: servo drives
• special tooling : od turning/chamfering.
• spindle movement : hydraulic quill/ hardened and ground guides.

We are a distinguished Floor Lathe Machine Manufacturer, Exporter & Consultancy in India. The Floor Lathe Machine is designed for Heavy Duty Turning on large Components of Cement Plants, Sugar Mills, Reactors, Ball Mills, Power Plants, Turbines, Mining Equipment etc. The Floor Lathe Machine can be offered suitable for Floor Type or Pit Type Installations. The Floor Lathe Machine is built on modular concept and has a freely moving X-Z Axis Tool Post that can be positioned any where along the Job length. X-Z Slide can be programmed for plain & taper turning. The "Z" axis stroke in steps of 500mm provided from 1.5 mts onwards. Tail Stock positioning is done through motorized Rack & Pinion arrangement. The Floor Lathe Machines flexibility is extended with the availability of attachments for milling, drilling & spindle indexing.

Specifications

• Admit between Face Plates : 20 Mts
• Job Dia (Max/Min) : 6/3 Mts
• Weight of Job : 180 MT
• Spindle Motor : 55kW
• Traverses X-Z Module : 'X'-800mm 'Z'-2000mm

Precitec is a well acclaimed Manufacturer and Exporter of Vertical Turning Center. Our Vertical Turning Center possesses high table load capacity with rigid cross roller bearing for higher models and taper roller bearings for smaller models.‏

Features

• Well designed machine optimized for low tool deflections and vibrations under heavy machining capitalFEM techniques.‏
• Single piece cast iron housing for table bearing and drive gear box.
• Rigid turn table with T-slots and adjustable manual clamping jaws.
• High table load capacity with rigid cross roller bearing for higher models and taper roller bearings for smaller models.‏
• Choice of RAM types with / without live tools.
• Machine with C-Axis controls with special counter drive for backlash elimination.
• 12 / 16 tools Disc type ATC
• Centralized lubrication for slides‏

The company is known for its high quality Counterbore Tools in the national market. Our Adjustable Counterbore Tool made available by us is specially designed for the purpose of counter boring. Apart from this, we are considered as the most important Counterbore Tools Manufacturer as well as one of the leading Exporters in India.

Precitec counter bore/spot facing tool replaces conventional HSS cutters and offer the advantages of throwaway indexable carbide inserts. The standard range of tools include counter bore size from dia. 19 to 63 dia. in steps of 1mm. Higher sizes as well as smaller sizes are manufactured specially to the needs of users. Each tool makes use of 2 standard (mostly SPUN type) inserts available freely in the market. Replaceable pilot allow for variations in pilot sizes corresponding to a particular counter bore/spot facing size. Tools with special shanks are also made and supplied. To facilitate easy chip flow, well designed gashes and relieves are provided on the tool shank. Combination tools for counter boring as well as Rear or Duplex Spot Facing and Chamfering tools are also made to meet the specific requirements of components.

We manufacture state of the art CNC Lathes Machies. These lathes adopt latest technologies and highly rigid machines developed, suitable for lath as well as mass production.

The company deals in high precision Spindle Units of different range in the national market. Our Single Spindle Drilling Units are extensively used for drilling and boring at much faster speed. These spindle units are highly durable in nature. In addition to this, we are one of the leading Industrial Spindle Units Manufacturer in India.

UMS Series Spindle Units

• Well accepted trouble free spindle units.
• Exceptionally low run outs and spindles provided with mandrel tests.
• High grade of rigid cast iron housing with case hardened spindle shaft.
• Wide choice of spindle speeds based on the customer application.
• Motor power selectable based on the requirement.
• Through coolant hollow drawbars with rotary joints for rear coolant entry provided as options.

In heat exchangers use fin tubes to increase heat precipitation efficiency by 5 to 6times.The machine is developed for manufacture of finned tubes. The machine is basically capable of manufacturing various kinds of finned tubes like Embedded fins (Gfins), wrap around (L and LL fins), knurled, soldered fins, etc. Main purposes of the machines, the process of continuous finning. There is no limitation of the length of tube being finned. Also it is suitable for continuous production where in tubes can be fed continuously one after the other.
In heat exchangers use fin tubes to increase heat precipitation efficiency by 5 to 6times.The machine is developed for manufacture of finned tubes. The machine is basically capable of manufacturing various kinds of finned tubes like Embedded fins (Gfins), wrap around (L and LL fins), knurled, soldered fins, etc.Main purposes of the machines, the process of continuous finning. There is no limitation of the length of tube being finned. Also it is suitable for continuous production where in tubes can be fed continuously one after the other. central out put shaft is square drive shaft driving the two spindles (for tube rotation) and the other to drive shafts are coupled to the two lead screws of the two driving head respectively. There are two driving heads (LH & RH) which are driven by two shafts. These heads work alternatively to move the pipe in forward direction one after the other. These heads provide the required Pitch-feed movement of the tube. The spindles are hollow and the tube being fed passes right through them which pass through them. Both the heads are provided with a pneumatically operated collet chucks. The Chuck cylinders are operated through pneumatic solenoids provided. At any time one of the head either front or the rear will be driving and the other head will be waiting except for a short distance at the end of the stroke of each head when both will be driving. First head will clamp the tube and drive at the required pitch speed (for e.g. 11 FPI) till end of its stroke (approx. 450 mm). Before the end by actuation of a limit switch the second head will catch the tube and start moving forward at the required pitch feed when the first head will release the tube before its stroke end and returns to its home position and awaits to repeat the cycle ( return speed is always faster than forward motion). Such continuous actions of two heads lead to continuous feed of the tube. For this both heads are provided with a forward and reverse clutch and brake. Clutches are inside the main gear box while the brake is outside.

Also proper limit switch/proximity arrangements are provided for sensing the end of tube when the fining is to be stopped and also when the new tubes are to be joined. During these operations the machine automatically slows down and stops. The fining is continuous process of winding the fin over the tube. Hence continuous feed of fin material is very important. For this two bobbins are provided at the rear of machine below the input rack. The bobbins are kept at an inclined plane for the ease of operation. At any given time one of the bobbins is operational while other is used for the loading of the new coil and keeping it ready for next use when the fin becomes empty on the first one. Both the bobbins are provided with Hydro-pneumatic brakes actuated whenever the main motor stops so that the bobbins brake immediately without causing the fin to get loose or break. The fin from bobbin is fed through a series of guides to the front of the machine. Where a pneumatic lubricating and tensioning unit is provided. The felt pad of the unit is well lubricated to provide the adequate quantity of oil film on the fin. Further fin winds 90 deg. around the roller and passes through a fin guide mechanism to the fining area. The strip guide varies based on the type of fining and also acts as a forming tool for L and LL fins. Basically as the fin is wound around the tube is automatically pulled through the strip feed arrangement and the arrangement ensures straightening of fins and also not allow fins to break and also it is fed with the required formation. The fining mechanism ensures the process of proper fin formation on the tube and also the total fining operation.

It basically has four main components namely

• Pan wheel
• Pressure wheel
• Peen wheel ( Back filler)
• Grooving tool

Pan wheel and Pressure wheel are situated below the tube in the fining area at the front of the machine. Pan wheel is the larger wheel and this presses at required angle and pressure against the smaller Pressure wheel. The fin gets squeezed between the two and the subsequent elongatio results in the fining action. The fin is squeezed more at its periphery and almost not squeezed at all at its root wound over the tube. To achieve this machine has the provision for setting the pan wheel angle through the handle at the front of the machine.
Also the toggle lever for the pan wheel ensures the right pressure for squeezing. This can be adjusted through the fine screw provided at the front near the Pan. The height of both pressure and pan wheel is adjustable based on the tube diameter and the type of fining. The Pan wheel and pressure wheel both are driven by the main motor itself. For this the drive from the square shaft is transmitted through a series of gear boxes and belt drives. In front towards the operator a variable speed drive with an easy adjustment handle is provided where in the operator can easily adjust the ratio between the pan wheel speed and the spindle speed. The proper adjustment of this ensures correct fin feed to ensure proper winding of fin over the tube. The grooving and penning wheel are required for G- type fining only. Both are fixed on different arms at an angle above the tube. Grooving tool is on an arm towards the operator and while penning is away from operator. Both of them have both manual and pneumatic operation. The pneumatic operation is for short stroke while manual operation is for adjusting the pressure and also totally with drawing them.The grooving tool makes a continuous thread like formation on the tool However it is more an action of Plugging as it actually doe snot cut the material but forms a Groove with metal build up on either side. In process the grooving is done just before the fining. The root of the fin formed (being wound) enters the groove as it is getting formed and is helically wound only into the grove.The penning wheel immediately presses the material build up back into the grove. In the process it virtually holds the root of the fin creating a mechanical bonding between the tube and the fin.
Both the grooving tool and penning wheel have provision for adjusting the required angle of helix and also the pitch distance from the pan wheel. Both are also provided with pneumatic retraction cylinders of short stroke. They are useful for programmed with drawl of the tools during end of tube so that operator can pass over to next tube and start again. And also for the intermittent fining action where in fining is done for the required lengths only. The Machine is provided with an Input tube rack of adequate length as required to hold the tubes ready for fining and also guide the tube being finned.
For this a long V channel lined with soft material is provided. The V is supported on a series of elevating screw jacks actuated by a single common handle. The height is set based on the dia of the tube. The racks also have a arrangement for stacking few tubes on an inclined plane. When the new tube has to be joined the operator operates the required button where in one tube is lowered on to the V through pneumatic cylinders provided.Between the input rack and the machine a sensor is provided to sense the presence of tube length of the tube being fed into the machine. As the remaining length is out of the V Rack the machine slows down and stops after a short duration of travel when the new tube is coupled to the tube being fed through the machine. Coupling of new tube is must for complete fining of the tube being finned.The Out put Rack is a three roller system. It closely guides the finned tube which is very essential to ensure proper fining of long tubes and also no damage to the finned tube. The position of the rollers is adjustable based on diameter as explained later. The alignment of the rack is particularly important and proper care should be taken to align properly. The rack also has adjustable proximities for the end of the tube sensing. It has two sensors one for nearing the end when the machine slows down and the other for the end when the machine would stop.
Most of the actuations of the machine is achieved through the pneumatic cylinders provided. This includes the chuck operation, penning and grooving wheels, brake, tube loading, strip lubrication etc. All the pneumatic cylinder functions are controlled from the PLC through the solenoid valves. Where ever required we have used double solenoids detent type to ensure the actuation is not disturbed in the event of power failure. All the pneumatic valves are fixed at rear front of the machine just before the fining area. Also we have provided a FRL unit for the pneumatic. A minimum pressure of 5 bar is essential for the correct operation of the machine. If the pressure drops below the same it is sensed by the pressure switch provided and machine will stop automatically. The machine is provided with automatic centralized lubrication. For this a self contained motorized pumping unit is provided at the rear side of the machine.
The oil is distributed to various points required through the pipes. For every point a Metering cartridge is provided which ensures a correct dosage of oil. The pump is switched on periodically when the correct required oil flows once to every point. The interval of switching on is controlled by the PLC. If the oil level in the tank of the unit falls below the minimum level the machine will stop and it has to be filled for the machine to work again. This is indicated also by the lamp provided on the indicator panel. The fining machine is provided with a coolant system consisting of a coolant tank, pump, and delivery and return hoses. The coolant whenever switched on is delivered in required quantity controlled through the valve to the grooving tool. It is collected back to the coolant tank.

Our Recessing Tool is specially developed for creating recessed groves in existing bore at preset depth. Used for making internal circlip groves, internal recesses or back chamfering on jobs using drilling machines, Machining centers, Boring machines etc. The cycle of working of our Automatic Recessing Tool can be programmed. Besides, we are the most famous Industrial Recessing Tool Supplier in India. The tool consists of a taper shank to suit the machine spindle in which it is mounted. The tool is fitted with a guide bush and tool holder is selected depending upon job dimensions. The smaller collar at the top of the tool can be used to set and control the depth of the groove being cut. The larger collar on the bottom of the tool is used to set the distance of the groove from the reference surfaces. Two methods of guiding the guide bush in the job are adopted. In the first case, wherever possible the guide bush is made to suit an existing bore in the work piece. Whenever this is not possible, a separate jig plate having jig bush is suitably located on the job. The guide bush of the recessing tool takes the guide in the jig bush. The tool is fixed to the machine using the taper provided. The tool is then fed towards the work piece. When the axial surface of the guide bush comes in contact with the reference surface either on the job or on the jig plate, the vertical movement of the tool stops and amount of this movement controls the distance of the groove from the reference surfaces. Further feeding of the tool causes the tool to move out with the help of helical guide and an eccentric cam provided in the tool. This movement is controlled by the gap between the depth adjusting collar and the top surface of the eccentric bush. The gap also controls the depth setting of the tool.

When it comes to the supplying of Testing Equipments, one can always bank on us. We offer wide range of Industrial Testing Equipments in the indian market. They are remarkable for offering accurate measurement of various tests and research. In addition to this, we are the most prominent Testing Tools Manufacturer as well as Supplier in India.

We offer excellent quality Sweep Gauge in the domestic as well as global market. The Electrical Sweep Gauge supplied by us in the market is known for its high performance and durability. Besides, we are a primer Pressure Sweep Gauge Manufacturer as well as Supplier in India.

• The sweep gauges have been developed to measure large diameter and very high bores of jobs like bores of a large size generator stator.
• The equipment consists of X and Y table which can be leveled accurately by leveling patch provided at the centre a vertical column of required height (up to 6m) is provided.
• On the column a swinging arm is provided.
• The swinging arm also provided with up and down movement on the column.
• Position of the swinging arm can be clamped any vertical position still providing the swinging are rotate.
• The swinging arm is of the required radius (up to 8M.) at the end of the arm the measuring instrument like indicator can be fixed.
• Equipment can thus map the dimension of the large bore and also any high jobs.

The Self Feed Units made accessible by us are designed as per the demand of the clients. Our Automatic Feed Units are manufactured from the excellent quality raw materials in robust structure. They are remarkable for high performance. Apart from that, the company is counted as a chief Industrial Feed Unit Manufacturer in India

PUSF Series Hydraulic Self Feed Units

• High grade of rigid cast iron housing with case hardened spindle shaft.
• Universal design suitable for varied applications like milling, boring, drilling, reaming, tapping etc.
• Quill type units with axial cylinders with hydraulic feed control.
• Built in proximity switches.
• Wide choice of spindle speeds.
• Exchangeable belt and pulleys.
• Optionally power tool clamp and through coolant are also provided.
• Motor power selectable based on the requirement.

PUSF Series Pneumatic Self Feed Units

• Rigid high grade cast iron housing with case hardened spindle shaft
• Quill type units with axial cylinders with pneumatic feed control.
• Wide choice of spindle speeds based on the customer application.
• Suitable even for application using solid carbide tools requiring high-speed and rigidity.

we bring in the superior quality slitting machines in the indian market. being a leading auto slitting machines manufacturer in the industry, we designed them as per the exact specification provided by the clients. additionally, when it comes to the major hot slitting machine manufacturers, we are counted among the best in industry.

• machines built of using standard precitec modular units.
• 3-axis cnc machine suitable for collet slitting multiple key ways milling or spline milling.
• x & y slide movements and indexing are by using servomotors and their drives.
• all the 3-axis cnc controlled.
• variable spindle drive using inverted drive control ac motor.
• depending on the customer requirements up to 3-job stations for simultaneous cutting operations can be provided

For the complete range of Edge Milling Machine, just avail our highly affordable services. Our Precitec Edge Milling Machine is designed for the preparation of edge of the shell tubes of various radii. They are manufactured from the best quality alloy iron, the carriage & base aremade out of high grade alloy cast iron. Additionally, we are the reputed Synchronized Edge Machine Manufacturer in India. Click Here For Detail of Edge Master

Appreciated for offering high quality turning, our CNC Vertical Turning Machine is highly efficient. Use of superior quality raw materials in the production ensures excellent performance of Vertical Type Turning Machine. We stand among the leading Vertical Turning Machinery Manufacturers in India.

We bring forth the excellent quality Assembly Machines in the national market. The Automatic Assembly Machine made available by us is a machine developed for assembling of small sub assemblies used in automobile industry. In addition to this, we are one of the leading Assembly Machine Manufacturers in India.

The company is an expert Boring Bars Manufacturer in the national market. The Line Boring Equipment made accessible by us is high on performance as it is made of the finest quality raw materials available in the country. In addition to this, we are one of the most important Structural Boring Bars Manufacturer in India.

The company is engaged in the supplying and production of highly acclaimed Chamfering Tools in the industry. The Machine Chamfering Tools supplied by us are known for their high performance as well as world class quality. In addition to this, we are counted as a reputed Modular Chamfering Tools Manufacturer in India.

We deal in the finest quality Spot Facing Tools in the national market. Our Back Spot Facing Tools are used for back spot facing / chamfering on jobs using drilling machines, Machining centers, Boring machines etc. Their cycle of working can be programmed. Additionally, we are a prime Forward Spot Facing Tool Manufacturer in India. Rear spot facing around the hole is a cumbersome operation while adopting the conventional boring bar with HSS blades or cutters. The time required for fixing, setting and removing the blade/cutter is very high; being HSS, the cutting is very slow; and, whenever the cutting edge becomes blunt, it requires expensive and time consuming regrinding. All these result in the very high down time of the main machine. The automatic back spot facing tool is specially designed to make the back spot facing operation faster and cheaper. Since it totally eliminates manual interruption during back spot facing operation, not only expensive machine down time is saved, but also it is the most ideally suited tool for back spot facing operation on programmable /CNC machining centers. As the most of tools are offered with standard carbide insert, all the advantages of insert tooling will be available. ConstructionThe back spot facer consists of a case hardened and ground alloy steel shank, which takes location in the hole on which back spot facing is carried out. Provided in the pilot shank is a recess, for accommodating the insert holder or wing. Clamped on the wing is standard carbide insert with the help of a clamp screw. Being LH threaded, it holds the insert in a correct position. In the recess, the wing is eccentrically pivoted on hardened and ground pivot pin and pivot screw. A suitable clearance is provided on the pilot shank to enable it to freely rotate in a drilled hole. These tools are so designed that with various combination of pilot shanks, it is possible to obtain different back spot facing combinations. Sizes and SpecificationThe back spot facing diameter is offered in relationship to its pilot shank diameter i.e. at ratio 2:1. In other words, back spot facing is possible with this type of tool up to approximately twice the diameter of the nominal diameter of the pilot, subject to some design restrictions. Tools below 12mm pilot are normally offered with solid HSS wing, having integral pivot pin. OperationsThe automatic back spot facing tool, rotating in reverse direction, is inserted in to the hole. The wing, even it opens in rotation, instantly folds into the recess as it touches the rim of the hole in the work piece. After the wing clearly comes out of the pilot hole, the spindle rotation is reversed to forward direction. Then the wing swing out of the recess due to centrifugal force. With feed it cuts. On completion of the spot facing operation, the spindle rotation is reversed and the tool is withdrawn. During the back spot facing, since cutting force tends the tool to pull down of the spindle, it is adviceable to fix the tool in the machine spindle with a cotter/drive key/draw bolt. It may be noted that the smaller size tools are running at comparatively higher speeds. Here, the wings, therefore, swing out easily due to high centrifugal force. However, large tools operate in lower speeds, which mean centrifugal force acting on the wing may be insufficient, particularly when the tools work in horizontal position, thus resulting the wing to remain in the recess. To overcome this problem, tools above 300mm pilot are provided with spring washer as shown in the sketch. The spring washer keeps the wing open after it comes clear of the pilot hole, irrespective of the speed at which the tool is being rotated.

We bring forth the finest quality Finning Machine in the global market. The Tube Finning Machines made by us are used in making various kinds of finned tubes like Embedded fins (G-fins), wrap around (L and LL fins), knurled, soldered fins etc. Moreover, we are one of the foremost Industrial Finning Machines Manufacturer in India.