






VXB
CSK25 One-Way Clutch Bearing - Sprag Freewheel Backstop
UPC: 00193019037461
Outer Diameter: 52mm
Width: 15mm
Torque: 68 N.m
CSK25 One-Way Clutch Bearing - Sprag Freewheel Backstop
✔️ 25mm x 52mm x 15mm - Torque-Locking in One Direction
The CSK25 is a high-performance one-way clutch bearing designed to transmit torque in a single direction while allowing free rotation in the opposite. Utilizing a sprag freewheel mechanism, it acts as an overrun clutch or backstop in applications like conveyors, printing presses, hydraulic drives, and mining equipment.
✅ Type: One-way clutch (sprag freewheel / backstop)
✅ Inner diameter (ID): 25mm
✅ Outer diameter (OD): 52mm
✅ Width: 15mm
✅ Torque capacity: 68 N·m
✅ Application: Prevents reverse rotation during power loss
✅ Brand: VXB Bearing
✅ Quantity: 1 bearing
💡 How do sprag clutches maintain rotational integrity under reverse loads?
Sprag elements inside the bearing wedge between inner and outer races under reverse torque, locking the system instantly - delivering zero-backlash performance essential for safety in driven and load-holding systems.
Engineered to engage only when it matters - ideal for backstopping and overrunning applications.
💡 When is a one-way clutch bearing essential?
It’s critical in systems where back-driving could cause damage, product loss, or safety hazards - like conveyor belts on an incline or industrial machinery requiring unidirectional motion.
VXB never lets me down. In looking for this special purpose bearing I expected it to either be proprietary or, if available, be very expensive. Neither was the case. I was able to get the one way bearing I needed for a very reasonable price. And quick shipping. I trust VXB for any bearing need.
perfect fit
Fixed my clay bird thrower better than new
To make an internal repair in My washing machine. What's great it was your bearing and my labor OR a two-hundred dollar transmission with seals extra and My labor. Then I saw that you also sell parts for R/C cars-a long time hobby of my high schooler. You'all will be hearing more from me.
install in a fan