B 204Heavy Duty One Way Clutch Bearing for Reliable Overrunning and Backstop The B 204 YFB one way lock bearing is a compact heavy duty clutch unit designed for overrunning, indexing, and backstop functions in Pakistans automation and machinery sectors. It allows torque transmission in one direction while freewheeling in the opposite direction, making it ideal for conveyors, feeders, and drive systems that require controlled rotation. As the exclusive