Name: Carbo 40mm triple ratchet pulley with cleat. Ringot
Brand: HARKEN
SKU: 2 613
Price: 290.00 USD
Availability: InStock

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Carbo 40mm triple ratchet pulley with cleat. Ringot - HARKEN

This innovative block offers perfect rope retention under load and strikes the right balance between holding power and controlled release.

Sheave diameter: 40 mm
Overall length: 110 mm
Weight: 245 g
Max. rope diameter: 5 mm
Max. working load: 408 kg
Breaking load: 816 kg
Shackle pin diameter: 6 mm

Its ratchet system increases braking efficiency while offering smooth and reliable handling, even under heavy load. Compared to classic metal blocks, this model significantly reduces onboard weight while maximizing safety and durability during intensive regattas.

Carbo Air Technology: ultra-strong lightweight structure, ideal for rigorous sea conditions.
Triple ratchet system for precise tension control and secure rope handling.
Integrated cleat allowing quick rope locking, perfect for easy adjustment or release.
Compatibility with small diameter ropes (up to 5 mm), suitable for modern sheets.
Robust stainless steel shackle for reliable and durable attachment.

SKU: 2 613 | Barcode: 097653134251

$290⁰⁰ USD $332⁰⁰

Sheave Ø (mm) 40 mm
Sheave Ø (in) 1 9/16 in
Length (mm) 110 mm
Length (in) 4 5/16 in
Weight (g) 245 g
Weight (oz) 8.6 oz
Max rope Ø (mm) 5 mm
Max rope Ø (in) 3/16 in
Maximum working load (kg) 408 kg
Maximum working load (lb) 900 lb
Breaking load (lb) 1800 lb
Breaking load (kg) 816 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.