Stieber CSK 20 Sprag Clutch Ball Bearing 20mm Bore 47mm OD

The Stieber CSK 20 Sprag Clutch Ball Bearing is a compact sprag-type freewheel integrated into a 62-series ball bearing, combining a sprag clutch with a bearing in a single, bearing-supported unit that delivers a 20 mm bore and a 47 mm outside diameter. CSK versions are grease-lubricated and designed for dust protection, with torque transmitted via a press-fit into a rigid housing; the CSK..2RS variant adds lip seals for splash resistance. For the 20 size, the race width is 14 mm and the unit weighs about 111 g, supporting compact drive trains where space is at a premium. The integrated CSK design makes it suitable for overrunning clutch applications and backstops in small machinery and gear assemblies that require reverse-rotation protection without a separate backstop.