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Carbo pulley with Ringot cleat, 40 mm

More details

This Carbo Air block combines lightness and robustness thanks to its low friction coefficient, while ensuring reliable performance and secure adjustment even during demanding use.

  • Sheave Ø: 40 mm
  • Overall length: 102 mm
  • Weight: 122 g
  • Maximum line Ø: 6 mm
  • Maximum working load: 136 kg
  • Breaking load: 272 kg
  • Shackle pin Ø: 4 mm

The Carbo cam cleat block Ringot 40 mm stands out for its compactness and its ability to withstand very high working loads relative to its low weight. Harken's Carbo Air range ideally complements the renowned Black Magic range.

  • Ultra-light structure and compact design for easy handling
  • High-strength materials ensuring durability and longevity
  • Integrated cam cleat allowing quick and easy adjustment
  • Excellent weight-to-strength ratio, synonymous with efficiency in racing or cruising
  • Compatibility with lines up to 6 mm in diameter

SKU: 2 646  |  Barcode: 097653084198
Regular price €12632 EUR

Sheave Ø (mm) 40 mm
Sheave Ø (in) 1 9/16 in
Length (mm) 102 mm
Length (in) 4 in
Weight (g) 122 g
Weight (oz) 4.3 oz
Max. rope Ø (mm) 6 mm
Max. rope Ø (in) 1/4 in
Maximum working load (kg) 136 kg
Maximum working load (lb) 300 lb
Breaking load (lb) 600 lb
Breaking load (kg) 272 kg
Shackle pin Ø (mm) 4 mm
Shackle pin Ø (in) 5/32 in

Our tips for choosing

Workload and breaking load

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

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

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

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

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.