Speedage Engineers (india) Pvt. Ltd.

Okhla, delhi

Speedage make Gravity (Counter Weight) Limit Switches are used for Heavy duty E.O.T. Cranes, Hoists, to prevent over travel of hoisting motion on power and control circuit up to 500 v.a.c., 50 cyclessec. and 40 Amps. continuous current. The housing of Gravity Limit Switch is made of cast iron Cast aluminium (IP 54).

Compact light weight and ergonomic design.

Made of high impact ABS resin

High visibility safety yellow colour

Variable diameter cable bushing with clamp accommodates a wide range of cables size.

Easy to push pressure switches.

Speedage make Gravity (Counter Weight) Limit Switches are used for Heavy duty E.O.T. Cranes, Hoists, to prevent over travel of hoisting motion on power and control circuit up to 500 v.a.c., 50 cyclessec. and 40 Amps. continuous current. The housing of Gravity Limit Switch is made of cast iron Cast aluminium (IP 54).

A coupling is a device used to connect two shafts together at their ends for the purpose of transmitting power

Gear couplings are torsionally rigid and are supplied to two designs:-

Download Drawing PDF

The gear couplings are selected based on.

• Horesepower or Torque
• Running RPM
• Physical Space limitations
• Shaft diameter
• Shaft gaps
• Special bore or finish information and type of fit.
• Service factor
• Application or type of equipment to be connected

Based on the application the appropriate service factor needs to be determined.

The maximum degree of misalignment permissible in gear couplings is from 0.5 Degrees to 1.5 Degrees. This varies with the size of the coupling being used.

The Anti-collision Device is a safety device to avoid to collision of two electric overhead traveling cranes working on the same rails.

The System works on the principle of retro-reflective infrared waves. It consists of an emitter and sensor module and a special reflector. The emitter emits the infrared waves in the direction of the reflector. The reflector reflects these infrared waves back to the sensor. The sensor senses the presence of these reflected infrared waves and activities an alarm signal and stops/reduces the speed of the cranes. Thus if the two cranes are away from each other then the reflected waves will not reach the sensor and the cranes operate normally. The sensing distance is adjustable between 3 to 10 meters. The anti collision system is specially designed for the crane application and is suitable for the continuous duty.

Each set consists of an Emitter/sensor module and a Reflector.

For one pair of cranes two sets of anti-collision systems are required

The Receiver of the system contains 9 potential free contact relays (7 + Start + Alarm) which can be configured as per the requirement. The Receiver also contains a feedback module which continuously monitors the internal circuitry and enables the user to check the Receiver status via LED on the Receiver.

Operated with 2AA size batteries and modular design of the system makes it easy to maintain.

Wheel Assembly for Cable Trolley S2

Speedage make Rotary geared type Limit Switches are used on control and power circuit of reversing drives so as to limit their rotation/movement within a predetermined position. The function of the Limit Switch is to stop the mechanism or drive at the extreme forward / reverse position.

The limit switches are particularly suited for use on reversing drives such as hoist, winches, rolling mechanisms used in steel plants such as coke ovens, feeding machinery, valve drives etc.

The Geared type Rotary Limit Switch basically consists of heavy duty worm gear drive with a ratio of 48:1 or 60:1. the worm gear unit is built in a sturdy cast aluminium housing which is fitted on the main body of the Limit Switch, covered with dust tight gasket in cast aluminium enclosure.

The limit switches are made in IP 54 enclosure with cast Aluminium cover duly machined surfaces to protect against dust and dirt.

The new range of Limit Switch has been designed and manufactured for use on reversing drives such as hoists, winches, rolling mills etc. It is compact in design and can be easily accommodated and installed on electric hoists, where space constrains are there.

The driving motion is transmitted by worm gear. All gears and hubs are made of low wear thermoplastics. The rotational movements are transmitted to switches by adjustable cams.

These Limit Switches come with worm gear drive ratio of 1:12.5, 1:50, 1:100, and 1:200. Specific worm gear drive ratios can also be supplied on request, as per the customers requirement.

These Limit Switches are supplied with IP65 degree of protection.

The contacts of the limit switches are 10 amps. rated at 500 V a.c.