ID
1360713
$ 81.80
1-2 weeks delivery time
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The Barton N03331 is a Size 3 triple swivel block with integrated becket, featuring three 45 mm plain bearing sheaves for ropes up to 10 mm. Weighing 179 g, it is designed for high-load multi-purchase systems requiring secure rope termination and automatic alignment under load. With a safe working load of 400 kg and break load of 800 kg, it ensures reliable performance for mainsheet, vang, and complex control systems.
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Barton N03331 - Triple Swivel Block with Becket Size 3 45mm – Plain Bearing, 3x Ø45mm Sheaves, Max Rope 10mm
The Barton N03331 Triple Swivel Block with Becket is part of the Size 3 (45 mm) range and features three plain bearing sheaves for dependable load handling. The integrated becket allows secure rope termination, while the swivel attachment ensures optimal alignment under varying load directions.
The triple sheave configuration delivers maximum load distribution and increased mechanical advantage in compact rigging systems. The Size 3 range incorporates modern construction with stainless steel frames and advanced materials, including 30% glass fibre reinforced nylon cheeks and acetal sheaves, ensuring high strength while maintaining low weight. The plain bearing system is well suited for higher static loads and continuous operation.
Key Features
- Triple sheave block with swivel attachment and becket
- Plain bearing sheaves for reliable load handling
- Swivel head for automatic alignment under load
- Becket for secure rope termination
- Maximum mechanical advantage for complex systems
Technical Specifications
Part Number N03331 Block Type Triple Swivel Block with Becket Size Size 3 (45 mm) Sheave Diameter 3 × 45 mm x 13 mm (1 3/4" x 33/64") Bearing Type Plain Bearing Number of Sheaves Triple Max Rope Diameter 10 mm (3/8") Safe Working Load (SWL) 400 kg (880 lbs) Break Load 800 kg (1760 lbs) Weight 179 g Dimensions 112 × 63 × 47 mm Materials Glass fibre reinforced nylon cheeks, acetal sheaves, 316 stainless steel fittings, brass plain bearings
Applications
- Mainsheet and trimming systems
- Vang and kicker systems
- High-ratio multi-purchase systems with rope termination
- Dinghies, dayboats and small cruising yachts
The Barton N03331 provides a powerful and efficient solution for maximum mechanical advantage, automatic alignment, and secure line termination, ensuring reliable performance in demanding sailing applications.
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