ID
1360915
$ 197.91
1-2 weeks delivery time
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The Barton N17321 is a Size 7 triple reverse shackle block with becket and three 70 mm ball bearing sheaves, designed for ropes up to 14 mm. Weighing 662 g, it provides low-friction performance with a safe working load of 1250 kg, break load of 2500 kg, and maximum rolling load of 875 kg. The reverse shackle allows 90° alignment flexibility, while the integrated becket enables secure rope termination, making it ideal for high-load multi-purchase systems on larger yachts.
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Barton N17321 - Triple Reverse Shackle Block with Becket Size 7 70mm – Ball Bearing, 3x Ø70mm Sheaves, Max Rope 14mm
The Barton N17321 Triple Reverse Shackle Block with Becket is part of the Size 7 (70 mm) high load cruising range, engineered for maximum strength and high-performance sailing systems. It features three ball bearing sheaves that deliver smooth, low-friction operation under dynamic loads.
Manufactured with glass fibre reinforced nylon side plates and an internal 316 stainless steel frame, the block is through-bolted and riveted for superior durability. The reverse shackle attachment allows secure fixing with 90° directional flexibility, while the integrated becket enables efficient rope termination for complex multi-line purchase systems.
Key Features
- Triple sheave block with reverse shackle and integrated becket
- Ball bearing system for smooth, high-efficiency performance
- Allows fixed mounting with 90° alignment flexibility
- Becket for secure rope termination
- Heavy-duty construction with stainless steel internal frame
Technical Specifications
Part Number N17321 Block Type Triple Reverse Shackle + Becket Size Size 7 (70 mm) Sheave Diameter 70 mm (2 13/16") Sheave Size 72 × 20 mm (2 53/64" × 3/4") Bearing Type Ball Bearing Number of Sheaves Triple Max Rope Diameter 14 mm (9/16") Safe Working Load (SWL) 1250 kg (2750 lbs) Break Load 2500 kg (5500 lbs) Max Rolling Load 875 kg (1929 lbs) Weight 662 g Dimensions 195 × 93 × 77 mm Materials Glass fibre reinforced nylon cheeks, Acetal sheaves, 316 stainless steel frame
Applications
- High load multi-purchase systems
- Mainsheet and traveller assemblies
- Complex rigging with fixed termination points
- Cruising and racing yacht applications
The Barton Size 7 ball bearing triple blocks with becket are engineered for maximum efficiency and control, providing smooth handling and reliable performance in demanding marine environments.
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