KK8 - KK40

KK No Keyways, plain bore.

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
KK15 Sprag Clutch CSK15/CKK15 15mm x 35mm x 11mm KK15 (CSK15) 15mm x 35mm x 11mm
£51.22 (inc VAT) per EACH
£42.68 (exc VAT)
KK20 Sprag Clutch CSK20/CKK20 20mm x 47mm x 14mm KK20 (CSK20) 20mm x 47mm x 14mm
£51.22 (inc VAT) per EACH
£42.68 (exc VAT)
KK25 CTS CTS UK25ZZ Sprag Clutch CSK25 25mm x 52mm x 15mm
£57.18 (inc VAT) per EACH
£47.65 (exc VAT)
KK30 Sprag Clutch CSK30/CKK30 30mm x 62mm x 16mm KK30 (CSK30) 30mm x 62mm x 16mm
£58.18 (inc VAT) per EACH
£48.48 (exc VAT)
KK35 Sprag Clutch CSK35/CKK35 35mm x 72mm x 17mm KK35 (CSK35) 35mm x 72mm x 12mm
£58.80 (inc VAT) per EACH
£49.00 (exc VAT)
KK40 Sprag Clutch CSK40/CKK40 40mm x 80mm x 18mm KK40 (CSK40) 40mm x 80mm x 18mm
£100.92 (inc VAT) per EACH
£84.10 (exc VAT)