The RBB80 Single Becket Roller Bearing Block is designed for high load, dynamic applications. Made with top quality materials like machined black anodised aluminium and Torlon® roller bearings, it ensures durability and performance under all conditions.  

The marine grade stainless shaft is swiveling but can be fixed in 0° or 90° position with a set screw. It is hollow and chamfered to reduce weight and the shackle is optimized with a ø8 mm body and ø10 mm pin. All to reduce weight but maintain strength. Acetal thrust bearings stabilize the sheave when subjected to side loads. The becket shaft is ø8 x 18 mm and fixed with M5 screws.

Seldén Roller Bearing Blocks (RBB) is our performance range and unrivalled in terms of low friction for the trimmer to endure driving the boat forward for longer periods of time. 

Safe working Load: 2500 kg
Breaking Load: 5000 kg
Max line size: 14 mm