Name: Carbo pulley with Ringot cleat, 57 mm
Brand: HARKEN
SKU: 2 616
Price: 189.00 USD
Availability: InStock

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Carbo pulley with Ringot cleat, 57 mm - HARKEN

Weighing only 442 g and made from robust materials, this compact block guarantees precise and secure handling, ideal for intensive and demanding use in navigation.

Sheave Ø: 57 mm
Maximum working load: 272 kg
Breaking load: 680 kg
Length: 132 mm
Max rope Ø: 10 mm

This Harken Carbo Air model incorporates advancements from the Black Magic series and offers effective adjustment even under high loads. Its compact design and ability to handle high working loads set it apart in the market and make it essential for any crew looking for reliability and ease of handling.

Low friction coefficient for quick and fluid adjustments
Lightweight and robust composite structure
Suitable for ropes up to 10 mm in diameter
Increased safety thanks to a high breaking load (680 kg)
Easy installation with a 5 mm shackle

SKU: 2 616 | Barcode: 097653089001

$189⁰⁰ USD

Sheave Ø (mm) 57 mm
Sheave Ø (in) 2 1/4 in
Length (mm) 132 mm
Length (in) 5 3/16 in
Weight (g) 442 g
Weight (oz) 15.6 oz
Max rope Ø (mm) 10 mm
Max rope Ø (in) 3/8 in
Maximum working load (kg) 272 kg
Maximum working load (lb) 600 lb
Breaking load (lb) 1500 lb
Breaking load (kg) 680 kg
Shackle pin Ø (mm) 5 mm
Shackle pin Ø (in) 3/16 in

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.