The CSK series is a sprag type clutch integrated into a 62 series ball bearing. This clutch is bearing supported and shipped grease lubricated and protected against dust larger than 0.012 in (0.33 mm) in Dia. Formsprag Clutch® Sprag Clutch, Series: CSK, 25 mm Bore, 52 mm OD, 15 mm Overall Length, 105 N-m Torque, 5200 RPM Maximum, Vertical (Zero-U) Mounting