KKN15 - KKN30

KKN One Keyway on the inner only.

Type KK is a sprag type freewheel integrated into a 62 series ball bearing (except sizes 8 and 40). It is bearing supported, delivered grease lubricated and protected against dust of more than 0,3 mm. The use of additional “nylos” type seals is recommended especially when the working temperature exceeds 50°C. Oil bath lubrication is also possible.

All the KK versions are equipped with “formchromed” sprags. This process increases several times the overrunning life time. Torque transmission is ensured by a press fit assembly into a rigid steel housing with N6 tolerance, and onto a shaft with n6 tolerance. For this reason, the initial bearing radial clearance is set at C5.


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Code Description size(mm) Price Quantity
KKN15 Sprag Clutch Keyway Inner 15mm x 35mm x 11mm CKKN15/CSK15-P KKN.PDF
£104.23 (inc VAT) per EACH
£86.86 (exc VAT)
KKN25 Sprag Clutch Keyway Inner 25mm x 52mm x 15mm CKKN25/CSK25-P
£86.26 (inc VAT) per EACH
£71.88 (exc VAT)
KKN30 Sprag Clutch Keyway inner 30mm x 62mm x 16mm CKKN30/CSK30-P
£122.21 (inc VAT) per EACH
£101.84 (exc VAT)