Freewheel one way clutch with lift off sprag type which are assembled in a cage assembly and connected with the inner race, rotate with the inner race. The centrifugal force is applied in the center of gravity of the sprag turns the sprag and rests against the cage plate of the cage assembly. This results in the gap a between the sprag and the outer track; works without contact. If the inner race speed decreases to such an extent that the effect of the centrifugal force on the sprag is less than that of the spring force , the sprag again rests on the outer race and the freewheel is ready to engage/lock. Suitable to :
>Maintenance Free Long Life
>High Speed Application


Working Principle:
The Sprag clutches get automatic released (because of change the contact point due to specially formed cam) and the unit becomes free (wheel) and when the same race is rotated in the opposite direction, These Sprag clutches, often provide the simplest and effective solutions for many applications, comparatively to clutches based on the ratchet and pawl type. Extensive range of cam, contact free – Centrifugal lift of sprag clutches have wide selection options for unidirectional drive – Sprag clutches.

In the simplest application, Sprag clutches connect and disconnect two rotating shafts (drive shafts or driven shaft).

In these devices, one shaft is typically attached with an prime mover unit and the other shaft provides output power for work.

The Sprag made of a special alloy steel and precision formed will provide high wear and fatigue life.

Sprag clutch races are precision ground, provide high concentricity and surface finish to obtain smooth Sprag rotation and manufatured from high-quality alloy steel achieving high surface hardness & core toughness.


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