BS Series One Way Backstop Cam Clutch Bearing BS75 Power Transmission Parts Product Overview The BS series Cam Clutches are designed for applications requiring prevention of reverse rotation in slow speed conveyor head shafts (backstopping). Technical Specifications Models BS30 to BS135 Model Torque Capacity (N*m) Max. Overrunning (r/min) Drag Torque (N*m) A B C PCD D E S H-M Size×Pitch×No. of Tapped Holes Grease Filler Hole (Size) Q'ty Grease (kg) Weight (Kg) BS302943500