Selden RBB60 Single Roller Bearing Block – Backstay / Halyard – 60 mm

The Selden RBB60 Single Roller Bearing Block – Backstay / Halyard (406-201-03) is specifically engineered for high-load applications such as backstay cascades and halyard systems. Its optimized design makes it ideal for use as an upper block in cascade setups or in 2:1 halyard configurations.

Built with machined black anodized aluminium cheeks, this block delivers excellent strength while remaining lightweight. It features Torlon® roller bearings for ultra-low friction and acetal thrust bearings that stabilize the sheave under side loads, ensuring smooth and efficient operation in dynamic sailing conditions.

The block uses a robust 8 mm shaft configuration for secure attachment in demanding rigging setups. Its compact and lightweight design (approx. 135 g) makes it particularly suitable where weight savings and performance are critical.

Key specifications:

• Sheave diameter: 60 mm
• Safe working load: 1500 kg
• Breaking load: 3000 kg
• Maximum line diameter: 12 mm
• Weight: approx. 135 g
• Attachment: 8 mm shaft

Designed for performance sailors, the Selden RBB60 range ensures minimal friction, fast response, and maximum durability in all sailing conditions.