Name: 40mm Carbo Ratchet Pulley with Ringot
Brand: HARKEN
SKU: 2 609
Price: 92.29 EUR
Availability: InStock

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40mm Carbo Ratchet Pulley with Ringot

More details

The Carbo 40 mm Ratchet Block with a ring ensures a perfect balance between holding power and controlled release.

Sheave diameter: 40 mm
Overall length: 102 mm
Weight: 52 g
Maximum line diameter: 10 mm
Maximum working load: 136 kg
Breaking load: 454 kg
Shackle pin diameter: 4 mm

High loads can thus be managed with complete confidence, even during the most demanding maneuvers or in extreme conditions.

High-performance ratchet system: allows for reliable locking and quick release of lines.
Carbo composite material structure: combines lightness and corrosion resistance.
Optimized ergonomics for hand use, ideal for quick and secure adjustments.
Versatility: compatible with lines up to 10 mm in diameter, meeting the needs of most pleasure or racing boats.

SKU: 2 609 | Barcode: 097653084105

€92²⁹ EUR

Sheave Ø (mm) 40 mm
Sheave Ø (in) 1 9/16 in
Length (mm) 102 mm
Length (in) 4 in
Weight (g) 52 g
Weight (oz) 1.8 oz
Max. rope Ø (mm) 10 mm
Max. rope Ø (in) 3/8 in
Max. working load (kg) 136 kg
Max. working load (lb) 300 lb
Breaking load (lb) 1000 lb
Breaking load (kg) 454 kg
Shackle Ø (mm) 4 mm
Shackle Ø (in) 5/32 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.