The Selden Ball Bearing Block, BBB30, is used when loads are moderate and dynamic. The ball bearings provide low friction sheave rotation with less vibration. This style Ball Bearing Block from Selden is available in 20, 30, 40, and 60 mm sheave diameters.
- Glass fiber reinforced composite
- Acetal bearing cage to prevent ball-to-ball friction and to reduce weight
- Stainless steel ball bearings