50 mm Roller Bearing Block - Single, Swivel
RBB50 Swiveling high-end single block with AISI316 shackle. Featuring a 50 mm sheave, the RBB50 is a compact, high-performance block designed for demanding, dynamic applications such as spinnaker and gennaker sheets, barber haulers, self-tacking jibs, and other high-load control lines.The RBB50 features machined, black anodized aluminium cheeks, Acetal ball bearings that absorb axial (side) loads, and Acetal roller bearings optimized for radial loads. This combination delivers smooth operation, high efficiency, and outstanding durability under load.Safe working Load: 750 kg Breaking Load: 1500 kg Max line size: 10 mm