Selden PBB70 Fiddle Block 70 mm – Plain Bearing

The Selden PBB70 fiddle block (407-001-11) is designed for high-load sailing applications where increased purchase and efficient load distribution are required. With its fiddle configuration, this block is ideal for creating powerful 4:1 tackle systems commonly used in mainsheet and boom vang setups.

As part of the Selden PBB70 plain bearing series, this block is optimized for high static loads and controlled trimming. It is particularly suitable for cruising and performance yachts where reliability under load is essential.

The block features two 70 mm glass fibre-reinforced sheaves with polymer bushings, ensuring smooth rope handling even under heavy loads. The stainless steel reinforcement strap and fibre-reinforced composite cheeks provide excellent strength and prevent line jamming.

The swivel head with sliding locking mechanism allows flexible alignment or fixed positioning depending on installation requirements.

Key features:

• Fiddle block for 4:1 tackle systems (PBB70 series)
• Sheave diameter: 70 mm
• Maximum line diameter: 14 mm
• Safe working load: 1500 kg
• Breaking load: 3000 kg
• Weight: approx. 420–465 g
• Pin diameter: 8 mm
• Shackle diameter: 6 mm
• Purchase ratio: 4:1

Applications on board:

• Mainsheet systems (4:1 purchase)
• Boom vang (kicker) systems
• Cascading tackle systems
• Halyard systems requiring increased mechanical advantage

A powerful and reliable solution for sailors who need efficient load handling and maximum control in high-load tackle systems.