Selden PBB50 Single Block with Cam Cleat – 50 mm Plain Bearing Block for Control Lines

The Selden PBB50 Single Block with Cam Cleat (405-001-03) is a compact and efficient solution for line control in medium-load applications where trimming and quick adjustment are essential.

This block combines a 50 mm plain bearing sheave with an integrated cam cleat, allowing the line to run freely and be locked instantly when needed. This makes it ideal for applications where frequent adjustments are required, such as control lines, trimming systems, and small sheet setups.

The plain bearing construction ensures reliable performance with minimal maintenance, particularly in static or moderately loaded systems. The acetal sheave provides smooth line handling, reducing wear and ensuring consistent operation.

The block features a strong composite body with glass fibre reinforced cheeks to prevent line jamming. Stainless steel components provide durability and corrosion resistance, making it suitable for long-term use in marine environments.

Key features:

• Single block with integrated cam cleat
• Quick line locking and release for precise trimming
• Plain bearing design for reliable, low-maintenance use
• 50 mm acetal sheave for smooth operation
• Glass fibre reinforced cheeks to prevent line jamming
• Stainless steel components for durability
• Compact and efficient design

Technical specifications:

• Sheave diameter: 50 mm
• Maximum rope diameter: 12 mm
• Safe working load: 120 kg
• Breaking load: 240 kg
• Weight: approx. 204 g
• Pin diameter: 5 mm
• Type: Single block with cam cleat
• System: Selden PBB50

Applications:

• Control lines requiring quick adjustment
• Halyard fine-tuning systems
• Reefing and trimming systems
• Dinghy and keelboat rigging
• Deck-mounted line control

A practical solution for sailors who need precise control, quick locking, and reliable performance in compact setups.