Barton Marine N03 130 Size 3 Single Plain Bearing Block with Swivel

The Barton Marine Size 3 Single Plain Bearing Block with Swivel is a high-quality marine pulley block designed for dinghies, day boats, and light cruising yachts. This block features a precision-molded acetal sheave running on a large diameter brass bearing, ensuring smooth, free-running operation even under high loads.

Key Features:

• Fully swiveling head with removable shackle for versatile mounting options
• Precision-molded acetal sheave for durability and low friction
• Large diameter brass bearing ensures reliable performance under load
• Compact single-sheave design ideal for sail control systems
• Safe working load of 881 lbs with break load of 1,763 lbs

Specifications:

• Overall length: 3-15/16 inches (100 mm)
• Sheave dimensions: 1-3/4" x 1/2" (45 x 13 mm)
• Maximum rope diameter: 3/8 inch (10 mm)
• Weight: 2.6 oz (73 grams)
• Safe working load: 881 lbs (400 kg)
• Break load: 1,763 lbs (800 kg)

Barton Marine blocks are trusted by sailors worldwide for their reliability and smooth operation. The swiveling head reduces line twist and allows the block to align naturally with changing load directions, making it an excellent choice for mainsheet systems, jib sheets, and other running rigging applications on smaller vessels.

Note: Break loads assume all sheaves are evenly loaded as in a purchase tackle system.