50 mm Roller Bearing Block - Single, Stand-Up

RBB50 -  Single Stand-up

A rubber stand-up supports the block making it ideal for German sheeting, spinnaker sheets and runners.

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.

BlockType: fixeD
Breaking Load: 1500 kg
Safe working Load: 750 kg
System: RBB50
Max line size: 10 mm
Mounting: 4x M5

More information

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