Ball bearing blocks are used where the loads are more moderate and dynamic. The ball bearings provide for good sheave rotation with the lowest possible friction. Technical Features BBB 40: Stainless steel ball bearing races, stainless steel ball bearings and glass fibre reinforced sheave for best bearing strength even under high dynamic loads. Acetal bearing cage to prevent ball-to-ball friction and to reduce weight. Glass fibre reinforced composite.
1 document for Seldén 40mm Single/Swivel/Cam Block - Ball Bearing