



Harken 57mm Ratchamatic® Block Swivel
Harken 57mm Ratchamatic® Block Swivel features lightweight construction, an innovative ratchet mechanism, and smooth rotation, making it ideal for efficiently controlling sails and reducing line loads in marine applications.
Out of stock items can be ordered and shipped out within 3-5 working days
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Pickup available at Marine Chandlery: North Shields
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Harken 57mm Ratchamatic® Block Swivel
Marine Chandlery: North Shields
Unit G4 Narvik Way
Tyne Tunnel Trading Estate
North Shields NE29 7XJ
United Kingdom

Harken 57mm Ratchamatic® Block Swivel features lightweight construction, an innovative ratchet mechanism, and smooth rotation, making it ideal for efficiently controlling sails and reducing line loads in marine applications.
Harken 57mm Ratchamatic® Block Swivel features lightweight construction, an innovative ratchet mechanism, and smooth rotation, making it ideal for efficiently controlling sails and reducing line loads in marine applications.
Description
The Harken 57mm Ratchamatic® Block Swivel is a robust and reliable solution designed for optimal performance in a variety of marine applications. Engineered with precision, this block features an innovative ratcheting mechanism that allows for controlled easing of loads, significantly enhancing user efficiency during sail handling. Constructed from high-quality materials, the Ratchamatic® Block boasts a lightweight yet durable design, perfect for both competitive racing and recreational sailing. The swivel head provides exceptional versatility, permitting seamless integration into different rigging setups. With a working load limit of 670 kg and a breaking load of 2,200 kg, this block is built to withstand the demanding conditions often encountered at sea. Key features include an integral shackle for easy attachment and secure connections, as well as a sealed ball bearing system for smooth operation and reduced friction. The block's racheting feature allows for precise control, making it ideal for applications such as controlling halyards, sheets, and other rigging. Practical benefits for marine users include improved sail trim efficiency and reduced wear on lines, contributing to lower maintenance costs over time. Whether you are a seasoned sailor or a weekend enthusiast, the Harken 57mm Ratchamatic® Block Swivel provides an effective solution for enhancing your sailing experience. Reliable and versatile, this block represents an essential addition to any marine setup.
Specification
| Product Name | Harken 57mm Ratchamatic® Block Swivel |
| Sheave Diameter | 57 mm |
| Length | 156 mm |
| Width | 85 mm |
| Height | 72 mm |
| Weight | 200 g |
| Maximum Working Load | 500 kg |
| Breaking Load | 1500 kg |
| Material | High-strength composite and aluminum |
| Ball Bearings | Stainless steel |
| Swivel Type | Integrated swivel |
| Certifications | CE certified |
| Application | Single line systems, sail handling |
Delivery information
Standard delivery: 3-5 working days
Express delivery: 1-2 working days
Free delivery on orders over £100








