BB40-2K-K One-Way Bearing Shield Sprag Freewheel Clutch - Key-wayBB40 2K K One Way Clutch Bearing Shielded Sprag with Keyway 40mm x 80mm x 27mm The BB40 2K K is a shielded one way sprag clutch bearing featuring a keyway on the inner ring for secure torque transfer. Designed for indexing, backstopping, or overrunning functions, its ideal for systems like conveyors, gearboxes, and industrial rollers. Type: One way sprag clutch bearing Inner diameter: 40mm Outer diameter: 80mm Width: 27mm One keyway on inner ring