Name: 40mm Carbo Pulley with Ratchet/Ringot
Brand: HARKEN
SKU: 2 611
Price: 186.61 EUR
Availability: InStock

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40mm Carbo Pulley with Ratchet/Ringot

More details

This high-performance block is designed to provide perfect rope grip under load and guarantees an optimal balance between holding power and controlled rope release.

Sheave diameter: 40 mm
Overall length: 102 mm
Weight: 132 g
Maximum rope diameter: 6 mm
Maximum working load: 136 kg
Breaking load: 272 kg
Shackle pin diameter: 4 mm

The Carbo 40 mm Ratchet Block with Cam Cleat stands out for its lightweight design without compromising robustness.

Lightweight Carbo construction for easier handling and less weight on deck
High-performance ratchet system providing precise rope control, even under high tension
Ability to support a maximum rope diameter of 6 mm, suitable for a wide variety of applications
Integrated cam cleat facilitating handling and safety of maneuvers on board
Maximum working load of 136 kg, meeting the demands of intensive maneuvers

SKU: 2 611 | Barcode: 097653084129

€186⁶¹ EUR

Sheave diameter (mm) 40 mm
Sheave diameter (in) 1 9/16 in
Length (mm) 102 mm
Length (in) 4 in
Weight (g) 132 g
Weight (oz) 4.7 oz
Max rope diameter (mm) 6 mm
Max rope diameter (in) 1/4 in
Max working load (kg) 136 kg
Max working load (lb) 300 lb
Breaking load (lb) 600 lb
Breaking load (kg) 272 kg
Shackle pin diameter (mm) 4 mm
Shackle pin diameter (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.