ID
1360914
$ 186.97
1-2 weeks delivery time
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The Barton N17320 is a Size 7 triple reverse shackle block with three 70 mm ball bearing sheaves, designed for ropes up to 14 mm. Weighing 618 g, it provides smooth 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 fixed mounting with 90° alignment flexibility, making it ideal for high-load multi-purchase systems on larger cruising and racing yachts.
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Barton N17320 - Triple Reverse Shackle Block Size 7 70mm – Ball Bearing, 3x Ø70mm Sheaves, Max Rope 14mm
The Barton N17320 Triple Reverse Shackle Block is part of the Size 7 (70 mm) high load cruising range, engineered for maximum strength and performance. It features three ball bearing sheaves that ensure smooth, low-friction operation in demanding dynamic load systems.
Built 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 the block to be securely fixed while enabling 90° directional alignment, making it highly versatile for complex rigging setups and multi-line purchase systems.
Key Features
- Triple sheave block with reverse shackle attachment
- Ball bearing system for smooth and efficient operation
- Allows fixed mounting with 90° alignment flexibility
- Heavy-duty construction with stainless steel internal frame
- Optimized for high load multi-purchase systems
Technical Specifications
Part Number N17320 Block Type Triple Reverse Shackle 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 618 g Dimensions 168 × 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 requiring directional flexibility
- Cruising and racing yacht applications
The Barton Size 7 ball bearing triple blocks are engineered for maximum efficiency and load handling, ensuring smooth operation and reliable performance in demanding marine environments.
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