ID
1360725
$ 91.84
1-2 weeks delivery time
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The Barton N04250 is a Size 4 double upright block featuring two 58 mm plain bearing sheaves for ropes up to 12 mm. Weighing 313 g, it is designed for fixed deck mounting applications requiring stable line guidance and high load capacity. With a safe working load of 750 kg and break load of 1500 kg, it is ideal for larger cruising and racing yachts and compatible with mainsheet traveller systems.
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Barton N04250 - Double Upright Block Size 4 58mm – Plain Bearing, 2x Ø58mm Sheaves, Max Rope 12mm
The Barton N04250 Double Upright Block is part of the Size 4 (58 mm) range and is designed for fixed deck mounting applications. It features two plain bearing sheaves for reliable load handling and consistent performance under high loads.
The upright configuration allows the block to be securely mounted to deck surfaces, providing stable and controlled line routing. The double sheave design enables efficient load distribution and increased mechanical advantage in compact systems. The block is built using high-grade moulded side plates, through-bolted and riveted for maximum strength and durability. All load-bearing components and the internal frame are made from marine-grade 316 stainless steel.
The Size 4 range is engineered for larger cruising and racing yachts, delivering high strength, durability, and compatibility with mainsheet traveller systems. The plain bearing system is ideal for high-load and static applications.
Key Features
- Double upright block for deck-mounted installations
- Plain bearing sheaves for reliable load handling
- Fixed position for stable line guidance
- Heavy-duty construction with through-bolted side plates
- Marine-grade 316 stainless steel internal frame
Technical Specifications
Part Number N04250 Block Type Double Upright Block Size Size 4 (58 mm) Sheave Diameter 2 × 58 mm x 17 mm (2 5/16" x 5/8") Bearing Type Plain Bearing Number of Sheaves Double Max Rope Diameter 12 mm (7/16") Safe Working Load (SWL) 750 kg (1650 lbs) Break Load 1500 kg (3300 lbs) Weight 313 g Dimensions 92 × 80 × 78 mm Materials High-grade moulded side plates, acetal sheaves, marine-grade 316 stainless steel frame and fittings, brass plain bearings
Applications
- Deck-mounted control line routing
- Mainsheet and traveller systems
- High-load purchase systems
- Cruising and racing yachts up to 10 m and above
The Barton N04250 delivers exceptional strength and stability for fixed-position installations, ensuring efficient and controlled line handling in demanding marine environments.
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