Selden PBB40 Fiddle Block – 40 mm Plain Bearing Double Block for Medium Loads

The Selden PBB40 Fiddle Block (404-001-11) is a compact and durable double block designed for medium-load applications where mechanical advantage is required. The fiddle configuration (two sheaves of different alignment) allows efficient line routing in purchase systems.

With a 40 mm acetal sheave and plain bearing construction, this block is ideal for static or moderately loaded systems. It provides reliable performance with minimal maintenance, making it suitable for everyday onboard use.

The cheeks are made from glass fibre reinforced composite, ensuring strength and preventing line jamming under load. Stainless steel components provide additional durability and resistance to corrosion in marine environments.

This block is commonly used in tackle systems where increased control and load distribution are required.

Key features:

• Fiddle block (double sheave configuration) for purchase systems
• Plain bearing design for low maintenance
• Acetal sheave for smooth operation
• Glass fibre reinforced cheeks to prevent line jamming
• Strong composite construction
• Corrosion-resistant materials
• Suitable for medium-load applications

Technical specifications:

• Sheave diameter: 40 mm
• Maximum rope diameter: 8 mm
• Safe working load: 350 kg
• Breaking load: 700 kg
• Weight: approx. 88 g
• Type: Fiddle (double) plain bearing block
• System: Selden PBB40

Applications:

• Mainsheet purchase systems
• Boom vang systems
• Control line cascades
• Dinghy and keelboat rigging
• General onboard tackle systems

A reliable and practical solution for sailors needing efficient load handling in compact purchase systems.