SG Transmission > Products > Power on Clutches

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SG Transmission Type 51 clutches offer a low-cost and simple option for the transmission of motion in a drive train. Three basic types are currently available allowing for various mounting options and flexibility in design. However, over 50% of our throughput are customised units in batches from 10 to 2,000. Please contact us using the link above to discuss your specific requirements

The three basic types are:

Flange Mounted - for mounting directly to motor or gearbox bodies etc
Ball Bearing Mounted – for mounting onto shafts for high speed or force applications
Sleeve Bearing Mounted – for mounting onto shafts where lower forces and speeds are required

Selection Information

Clutch Body

- Flange Mounted (F.M.) clutches are the least complicated to fit, and have machined bores and flange sections allowing the field to be located positively on a bearing or in a motor frame recess, and are secured with screws. The customer has to ensure concentricity as stated on product datasheet.

- Ball-Bearing (B.B.) and Sleeve-Bearing (S.B.) are slightly different in construction in that the field and rotor sections are pre-assembled during manufacture. This clutch assembly is fitted to the drive shaft and locked in place in a similar fashion to the F.M. type. The field is fitted with an anti-rotation tag (Torque Arm) and must be located onto an anti-rotation pin, positioned in a stationary part of the machine. The field must not be locked, but allowed to "float", hence avoiding pre-load of the field bearing and eventual failure.

Rotor

The rotor section is fitted to the shaft and locked axially using screws, circlips, or end-caps, with the drive being transmitted in most cases via a parallel key. Specific applications can be catered for, and many fixing options available depending on size and location of the drive components.

Armatures

Armatures can be supplied as C.L., C.C., or C.E. types (please refer to data sheets on the right) and consist of an armature plate and return spring (in C.L. form), or a hub, with or without bearings, to suit the needs of the drive train. The armature must be positioned with an air-gap to allow efficient operation, and must be checked at regular interval and reset where necessary.