Selden PBB100 Double Cheek Block 100 mm – Plain Bearing

The Selden PBB100 double cheek block (410-001-16) is designed for extreme load applications where fixed mounting and efficient load distribution are required. With two 100 mm sheaves in a compact deck-mounted design, this block is ideal for guiding multiple lines or creating powerful, low-profile tackle systems.

Mounted directly onto the deck, mast or boom, this block provides a stable and highly durable solution for demanding rigging setups. It is particularly suited for larger yachts and professional installations where reliability and strength are critical.

As part of the Selden PBB100 plain bearing range, this block is engineered for high static loads. The machined, black anodised aluminium sheaves are fitted with polymer (acetal) bushings and two axial Delrin® bearings, which stabilise the sheaves when lines run at an angle and ensure smooth operation under heavy load.

The robust construction includes anodised aluminium cheeks and stainless steel load components, with insulation between materials to prevent corrosion and extend service life.

With a safe working load of 4000 kg, this block is built for the most demanding marine environments.

The flat base allows secure mounting with three M10 bolts, ensuring a rigid and stable installation under high loads.

Key features:

• Heavy-duty double cheek block for fixed mounting (PBB100 series)
• Sheave diameter: 100 mm
• Maximum line diameter: 20 mm
• Safe working load: 4000 kg
• Weight: approx. 1237 g
• Mounting: 3 x M10 bolts
• Aluminium sheaves with Delrin® side-load bearings

Applications on board:

• Deck-mounted multi-line guidance
• Outhaul systems
• Reefing and control systems
• Mast and boom deflection points
• Compact high-load tackle systems

A robust and space-efficient solution for sailors and riggers who require reliable performance under extreme load conditions.