Name: Carbo 57mm Ratchet Pulley - GRIP x 2
Brand: HARKEN
SKU: 2 169
Price: 104.00 USD
Availability: InStock

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Carbo 57mm Ratchet Pulley - GRIP x 2 - HARKEN

Featuring Power3 ratchet technology, it offers three levels of holding power to perfectly adapt to all conditions encountered during regattas.

Sheave Ø: 57 mm
Overall length: 103 mm
Weight: 85 g
Maximum rope Ø: 10 mm
Maximum working load: 227 kg
Holding power: 20:1

The clutch button, easily accessible from both sides, facilitates handling even in strong winds, which improves control and responsiveness compared to classic versions.

Power3 ratchet mechanism offering x2 holding power, ensuring safety and performance even in strong breezes;
Significant reduction in effort thanks to 20:1 power, ideal for long sails or repeated maneuvers;
Compact design (103 mm long for only 85 g) allowing easy mounting and space-saving on deck;
Suitable for ropes up to 10 mm, it fits most racing rigs;
Durable construction by Harken, renowned for its reliability on international regatta circuits.

In summary, the Carbo 57 mm Ratchet - GRIP x 2 Block stands out as a top choice for any crew looking for equipment that is technical, lightweight, and high-performing, meeting the expectations of demanding sailors.

SKU: 2 169 | Barcode: 097653284277

$104⁰⁰ USD $123⁰⁰

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 20:1

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.