



Harken 57mm Ratchamatic® Block Swivel Becket
Harken 57mm Ratchamatic® Block Swivel Becket features a high-load design for effortless line handling. Ideal for sailboats, this durable block offers reliable performance with efficient ratcheting action and a swiveling attachment for maximum versatility.
Out of stock items can be ordered and shipped out within 3-5 working days
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Harken 57mm Ratchamatic® Block Swivel Becket
Marine Chandlery: North Shields
Unit G4 Narvik Way
Tyne Tunnel Trading Estate
North Shields NE29 7XJ
United Kingdom

Harken 57mm Ratchamatic® Block Swivel Becket features a high-load design for effortless line handling. Ideal for sailboats, this durable block offers reliable performance with efficient ratcheting action and a swiveling attachment for maximum versatility.
Harken 57mm Ratchamatic® Block Swivel Becket features a high-load design for effortless line handling. Ideal for sailboats, this durable block offers reliable performance with efficient ratcheting action and a swiveling attachment for maximum versatility.
Description
The Harken 57mm Ratchamatic® Block Swivel Becket is a versatile and robust block designed for demanding marine applications. Constructed from high-strength materials, this block features a 57mm sheave that provides exceptional load capacity and efficient performance. The ratcheting mechanism allows for a secure hold, reducing the risk of accidental release under load, making it ideal for control lines on sailboats, cruising yachts, and performance racing vessels. The swivel becket enhances its functionality, allowing for easy attachment to a wide range of rigging configurations and providing improved articulation to accommodate various angles. With a working load limit that supports heavy-duty applications, this block is suitable for mainsheets, halyards, and other critical rigging setups. Key features include a lightweight and durable design, precision-engineered ball bearings for smooth sheave rotation, and a low-friction performance that maximizes efficiency. The Harken 57mm Ratchamatic® Block Swivel Becket is an essential piece of equipment for sailors seeking reliability and performance, ensuring that every maneuver can be executed with confidence and ease. Its corrosion-resistant materials guarantee longevity, even in harsh marine environments, making it a trusted choice for both recreational and professional sailors.
Specification
| Specification | Details |
|---|---|
| Model | 57mm Ratchamatic® Block Swivel Becket |
| Sheave Diameter | 57 mm |
| Maximum Working Load | 700 kg (1540 lbs) |
| Breaking Load | 1400 kg (3080 lbs) |
| Weight | 200 g (7.1 oz) |
| Line Size | 10 mm - 12 mm (3/8" - 1/2") |
| Material | Aluminum, Acetal |
| Becket Type | Swivel Becket |
| Ratchamatic Feature | Self-tailing, automatic ratchet |
Delivery information
Standard delivery: 3-5 working days
Express delivery: 1-2 working days
Free delivery on orders over £100








