Technical

Basic Designs

In this type of freewheel, the two races are cylindrical. The sprags, fitted in a cage, feature an active profile that ensures engagement or disengagement according to the relative motion of the races. It is possible to adapt the design of sprags and cage to get significantly different characteristics from one model to another. For example, models which have permanent contact or are contact free during overrunning, are ­available.

Self-contained One Way Clutch

Self Contained Anbau

The one way clutch is self-supported by integrated plain- or ball bearings, In most of the cases, this version is delivered completely sealed. An internal lubrication system is provided for

Types AV, CSK,GFR, AL, FSO, SMZ, RIZ.

Roller-Ramp One Way Clutch

Roller Ramp One Way Clutch

Mainly used as overrunning and indexing clutches.

Roller Ramp One Way Clutch 3d Rendering
  1. Outer race
  2. Inner race
  3. Clamping roller
  4. Spring bolt
  • Versitile
  • Rugged
  • High indexing accuracy
  • High performance overrunning clutch

These freewheels feature a cylindrical outer race and an inner consisting of ramps on which rollers are located. Springs and plungers ensure a permanent contact between the different elements for an instant torque transmission. This rugged, reliable versatile design can be used as an overrunning clutch, indexing clutch or backstop.

Note: the highest overrunning speed is possible if the outer race is overrunning. For this reason it is particularly adapted to high speed overrunning clutch application for dual drivers.

This design is recommended for use as an indexing clutch.

Built-in One Way Clutch

Built In One Way Clutch

The one way clutch consists just in the inner-, outer race and the clamping elements. Bearing support and lubrication must be provided for by the customer design.

Types AS, ASNU, AE, NF RSCI

Sometimes the offer consists just in the clamping elements

Type DC

Sprag Type One Way Clutch

Sprag Type One Way Clutch 3d Rendering
  1. Outer race
  2. Inner race
  3. Sprag
  4. Cage

klemmkoerper grafikIn this type of freewheel, the two races are cylindrical. The sprags, fitted in a cage, feature an active profile that ensures engagement or disengagement according to the relative motion of the races.

It is possible to adapt the design of sprags and cage to get significantly different characteristics from one model to another. For example, models which have permanent contact or are contact free during overrunning, are available.

DC Drawing
  1. Outer race
  2. Spring
  3. Double cage
  4. Sprag

This model features a large number of sprags controlled by two concentric cages.The transmitted torque is high compared to the required space.

Sprags are synchronised by the double cage design, and individually energized by a special spring.

In addition to the DC series offered in this catalogue, the CSK, GFK, and RSBW ranges use a similar principle.

RSCI Drawing
  1. Outer race
  2. Cage
  3. Sprag
  4. Spring
  5. Inner race
  • High overrunning speed
  • High torque capacity
  • High eccentricity tolerances
  • Accepts any lubricant

Sprags in the design, are fitted into a cage connected to the overrunning member. The sprag configuration is such that its centre of gravity is offset to its rotation axis.

RSCI Torque Drawing

Centrifugal force creates a lift off moment against an engaging spring. When the centrifugal force moment is greater than that of the spring, the sprag tilts over to a contact free position.

The sprag height and its active profile length allow this type of freewheel to accept significant eccentricity tolerances and to work with all the current lubricants used in power transmissions.