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Mechanical Clutches

Mechanical cam clutches use a cam or wedging element to lock the inner and outer races of the clutch, allowing torque to be transmitted in only one direction. Cam clutches allow for higher overrunning speeds, greater torque capacities, and longer service life.

Torque overload devices are designed to protect machinery when an overload or jam occurs. Utilizing a torque overload device can help increase production, reduce downtime and prevent costly repairs.

 

Find the right parts for your application based on: dimension, power, speed, service factor as well as other environmental conditions.

 

 

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Cam clutches are precision devices that lock the inner and outer races through the wedging action of cams to transmit torque in one direction of rotation while overrunning in the opposite direction of rotation. These units are often referred to as freewheels, sprag, overrunning, backstop or one-way clutches, depending upon their application.

Clutches are available with a bore range up through 17.7” and a torque range up through 720,000 lb. ft. and are the most complete and versatile cam clutches available for a variety of applications – from small business machines to giant steel slitters.

Ten series of clutches perform three basic modes of operation:

  • Overrunning
  • Indexing
  • Backstopping

These units have set standards of performance, offering:

  • Higher overrunning speeds
  • Greater torque capacities
  • Longer service life

 







We offer seven types of torque overload devices to help you protect equipment and machinery so you can:

  • Reduce the cost and hassle of overload related damages
  • Increase production by reducing downtime
  • Dial in trip torque precision to help reduce nuisance trips

Torque overload devices are available in shear pin, ball detent and friction facing designs. These units are available with up to 1800 rpm, 21,500 ft/lbs of torque and at best, can maintain trip torque within ±3% accuracy to meet the needs of the most demanding applications. 



Backstops (NRT)

External backstops provide more system holding power than any other backstop and increase the safety and reliability of your equipment by preventing reverse rotations. Our long-life designs and ability to engineer and manufacture complete, integrated drive packages assure that you get an ideal system for your needs whether it’s a single, tandem, or multiple backstop configurations.



Brakes

Used to stop and/or hold the motor and its driven load. We offer spring set electrically released brakes (power off or fail safe) and power engaged spring released brakes.   



Locking & Clamping Devices


We provide optimally designed and manufactured Koniclamp Clamping Hubs with integrated releasing technology for use with either the Moduflex torsionally rigid coupling, in combination with an actuated clutch design, or as a separate shaft component, wherever shafts are connected or overload protection is needed.  

Tollok manufactures highly engineered shaft locking devices for the power generation and process industries, as well as general industrial applications. Our products are used to secure rotating shafts, manage torque transmission, and counteract shaft bending and vibration.



Solid State Motor Switches

Used to provide a reliable option for switching of the start circuit in single phase motors.




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