Name: Carbo triple pulley, 57 mm row
Brand: HARKEN
SKU: 2 618
Price: 249.00 EUR
Availability: InStock

Voir tous les produits de la catégorie triple pulley

Carbo triple pulley, 57 mm row - HARKEN

This block, from the Carbo Air range, stands out for its low friction coefficient, lightweight and robust structure, and high reliability.

Sheave Ø: 57 mm
Length: 142 mm
Weight: 442 g
Max. rope Ø: 10 mm
Maximum working load: 816 kg
Breaking load: 2040 kg
Shackle Ø: 6 mm

Complementary to the renowned Black Magic range, it ensures a high working load for safe and precise control, even during demanding maneuvers.

Thanks to the use of advanced materials, the Carbo Triple Block with becket 57 mm guarantees uncompromising longevity and remarkable reliability in all circumstances. Its low friction coefficient minimizes the effort required during adjustments, thus optimizing sailboat performance. Its ability to accommodate ropes up to 10 mm in diameter and to withstand an impressive working load of 816 kg makes it an essential choice for professional or recreational crews looking for increased efficiency and safety.

SKU: 2 618 | Barcode: 097653089025

€249⁰⁰ EUR €304⁴⁹

Sheave Ø (mm) 57 mm
Sheave Ø (in) 2 1/4 in
Length (mm) 142 mm
Length (in) 5 5/8 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) 816 kg
Maximum working load (lb) 1800 lb
Breaking load (lb) 4500 lb
Breaking load (kg) 2040 kg
Shackle Ø (mm) 6 mm
Shackle Ø (in) 1/4 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.