80 mm Roller Bearing Block - Single, Halyard, permanent backstay S30 Acetal bearing cage to prevent

Acetal bearing cage to prevent ball-to-ball friction and to reduce weight

The block uses stainless steel ball bearings for smooth rotation

This prevents ball-to-ball contact and makes for low friction

The side consoles

The BBB40 Double In-Line Through-Deck Block is designed for passing lines through deck coamings or bulkheads

80 mm Roller Bearing Block - Single, Halyard, permanent backstay S30 Acetal bearing cage to preventThe RBB80 Single Backstay Roller Bearing Block is ideal for backstays (permanent backstays) as the top block in a cascade system or for a 2: 1 main halyard arrangement. Made with top quality materials like machined black anodised aluminium and Torlon roller bearings, it ensures durability and performance under all conditions. Acetal thrust bearings stabilize the sheave when subjected to side loads. Seldn Roller Bearing Blocks (RBB) is our performance