Name: 40mm Carbo quadruple pulley
Brand: HARKEN
Price: 219.70 EUR
Availability: InStock

Voir tous les produits de la catégorie Quadruple pulley

40mm Carbo quadruple pulley - HARKEN

Carbo 40 mm quadruple pulley: Innovative compactness & 660 kg working load. Optimize safety and performance on board with Harken.

More details

Designed for ultra-low friction, it combines lightness, strength, reliability, and accessibility, meeting the demands of the most discerning sailors.

Sheave diameter: 40 mm
Length: 94 mm
Weight: 170 g
Max rope diameter: 10 mm
Maximum working load: 660 kg
Breaking load: 1383 kg
Shackle pin diameter: 5 mm

The Harken 40 mm Carbo Quadruple Block stands out for its compactness without compromising on its permissible load.

Composite structure for minimal weight and optimized strength
Compatibility with ropes up to 10 mm in diameter, ideal for a wide variety of adjustments
Exceptional working load capacity of 660 kg, among the highest in its category
Quadruple system facilitating load distribution and rigging maneuverability
Harken technology, guaranteeing longevity and consistent performance even in the most extreme conditions

SKU: 2 654 | Barcode: 097653101048

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€219⁷⁰ EUR

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Sheave Ø (mm) 40 mm
Sheave Ø (in) 1 9/16 in
Length (mm) 94 mm
Length (in) 3 11/16 in
Weight (g) 170 g
Weight (oz) 6 oz
Max. rope Ø (mm) 10 mm
Max. rope Ø (in) 3/8 in
Max. working load (kg) 660 kg
Max. working load (lb) 1455 lb
Breaking load (lb) 3050 lb
Breaking load (kg) 1383 kg
Shackle Ø (mm) 5 mm
Shackle 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.