Name: Carbo pulley with 29 mm shackle
Brand: HARKEN
SKU: 348
Price: 19.95 EUR
Availability: InStock

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Carbo pulley with 29 mm shackle - HARKEN

Robust and lightweight, this block is ideal for all trimming requirements on modern sailboats, combining high strength and low-friction operation for quick and precise maneuvers. Its compact design allows for easy installation, while ensuring an optimal working load.

Sheave Ø: 29 mm
Overall length: 49 mm
Weight: 23 g
Max rope Ø: 8 mm
Maximum working load: 150 kg
Breaking load: 454 kg

The perfect alternative to the legendary Black Magic®, it aims for equal performance at a controlled cost, making high technology accessible to all demanding sailors.

Thanks to Harken's Carbo AirBlocks® technology, this block demonstrates exceptional robustness even in the most demanding conditions. The sheave surface ensures smooth rotation, ideal for preserving your ropes while optimizing tension and safety on board. Weighing only 23 grams, it offers an impressive breaking load of 454 kg, surpassing most competing models in the same category. Practical and versatile, its success is due to the precision engineering that has made Harken renowned among sailing enthusiasts.

The 29 mm Carbo Loop Block therefore combines lightness, reliability, and unparalleled performance for all your rigging applications.

SKU: 348 | Barcode: 097653100553

€19⁹⁵ EUR

Sheave Ø (mm) 29 mm
Sheave Ø (in) 1 1/8 in
Length (mm) 49 mm
Length (in) 1 15/16 in
Weight (g) 23 g
Weight (oz) .8 oz
Max. rope Ø (mm) 8 mm
Max. rope Ø (in) 5/16 in
Maximum working load (kg) 150 kg
Maximum working load (lb) 330 lb
Breaking load (lb) 1000 lb
Breaking load (kg) 454 kg

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.