Selden BBB60 Double Block – 60 mm Ball Bearing Block

The Selden BBB60 double block is designed for efficient load distribution and smooth line handling on sailboats. Equipped with two 60 mm acetal sheaves and a low-friction ball bearing system, this block ensures consistent performance under dynamic conditions.

The double configuration allows higher purchase ratios, making it ideal for control lines, sheets, and tackle systems where mechanical advantage is required. The integrated swivel shackle can be fixed at 0° or 90°, ensuring optimal alignment on deck or rigging setups.

Constructed with glass fibre reinforced composite cheeks and precision ball bearings, this block offers a strong yet lightweight solution for both cruising and performance sailing.

Key features

• Double block with two 60 mm sheaves
• Ball bearing system for minimal friction and smooth rotation
• Swivel shackle with adjustable locking positions (0° / 90°)
• Optimised for dynamic and moderate to high loads
• Lightweight composite construction with high strength
• Suitable for purchase systems and load distribution

Technical specifications

• Sheave diameter: 60 mm
• Weight: 220 g
• Safe working load: 700 kg
• Breaking load: 1400 kg
• Maximum line diameter: 10 mm
• Pin diameter: 5 mm
• Shackle diameter: 5 mm

Applications

• Sheets and control lines
• Purchase and tackle systems
• Dinghies, keelboats and yachts
• Situations requiring higher mechanical advantage