Name: Carbo 57mm Ratchet Pulley - GRIP x 1.5
Brand: HARKEN
Price: 89.00 EUR
Availability: InStock

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Carbo 57mm Ratchet Pulley - GRIP x 1.5 - HARKEN

Power and control with our Harken Carbo 57mm Ratchet Pulley - GRIP x 1.5. Lightweight, precise and reliable.

More details

This ratchet block combines lightness, performance, and control, providing exceptional holding power adapted to variable conditions from light wind to gusty.

Sheave Ø: 57 mm
Overall length: 103 mm
Weight: 85 g
Maximum rope Ø: 10 mm
Maximum working load: 227 kg
Holding power: 15:1

If you are used to classic models, the Harken Carbo 57 mm Ratchet Block marks a major advance thanks to its ultra-light Carbo construction and precise mechanics: it offers three holding power options, allowing for much finer adjustment and quick adaptation. Its robustness and ability to withstand heavy loads make it a reliable asset for the demands of competition and technical maneuvers.

Carbo technology for optimized weight-to-strength ratio
High-performance manual ratchet perfectly suited for gusts and wind variations
Smooth operation of the clutch button accessible from both sides
Reduced rope wear and precise load control
Ideal for various applications on dinghies, One Design keelboats, and sport sailboats

SKU: 2 166 | Barcode: 097653284246

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€89⁰⁰ EUR €105⁵⁶

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Sheave Ø (mm) 57 mm
Sheave Ø (in) 2 1/4 in
Length (mm) 103 mm
Length (in) 4 1/16 in
Weight (g) 85 g
Weight (oz) 3 oz
Max. rope Ø (mm) 10 mm
Max. rope Ø (in) 3/8 in
Maximum Working Load (kg) 227 kg
Maximum Working Load (lb) 500 lb
Breaking Load (lb) 2000 lb
Breaking Load (kg) 907 kg
Shackle Ø (mm) 5 mm
Shackle Ø (in) 3/16 in
Holding power 15:1

Our tips for choosing

Workload and breaking load

Choose your pulley based on the workload it will have to handle and the desired gear ratio. The orders of magnitude vary depending on the support: 400 to 500kg for the mainsheet or cunningham of an 18-foot catamaran, 100 to 200kg for the mainsheet or downhaul of a 420 dinghy for example.

Coefficient of friction

Modern ball bearing pulleys offer a much lower coefficient of friction than those without balls and are recommended for maneuvers that require constant adjustment (mainsail sheet, downhaul, cunningham, spinnaker essentially).

Restraining force

For the mainsheet which is not always fully tightened, or even never on some boats which require constant adjustment (29er, 49er, Class A,...) as for the spinnaker sheet, favor automatic or non-automatic winch pulleys, which considerably save muscles and gloves thanks to a retention that can go up to 70% of the workload.

Sheave diameter

Choose the diameter of the pulley according to the diameter of the rope it will guide. For example, depending on the support and workload, a 40 or 57 sheave is very suitable for a 6 to 10mm mainsail sheet. For Cunningham or downhaul type maneuvers, 16 or 22 sheaves are suitable.

Material

Stainless steel, carbon, composite, it's essentially a matter of weight, with an impact on the price: it all depends on the importance you attach to it. If the pulley is to guide a cable, use aluminum sheaves which will be much more resistant than composite materials.