Selden 40mm Single Ball Bearing Swivel Block

Selden 40mm Single Ball Bearing Swivel Block This Selden 40mm ball bearing block is used where the loads are more moderate and dynamic. The ball bearings provide for good sheave rotation with the lowest possible friction when the rope moves through the pulley block. This block has delrin ball bearings and an acetal sheave. The cheeks are made of glass fibre reinforced composite. Specifications Safe Working Load - 250kgs Breaking Load - 500kgs Max Rope Diameter - 10mm Shackle Diameter - 4mm