Name: 29mm triple carbo pulley
Brand: HARKEN
SKU: 344
Price: 72.90 EUR
Availability: InStock

Voir tous les produits de la catégorie triple pulley

29mm triple carbo pulley

More details

Its compact and solid structure is designed to offer precise and effortless adjustment, while ensuring exceptional wear resistance.

Sheave Ø: 29 mm
Length: 73 mm
Weight: 74 g
Max. line Ø: 8 mm
Maximum working load: 449 kg

Lighter than many competing models and part of a range that complements the renowned Black Magic series, this block offers superior load capacity and enhanced safety, all in a compact size.

Ultra-low friction thanks to advanced materials
Impressive load capacity of 449 kg for maximum safety
Lightweight design (74 g), ideal for optimizing adjustments
Compatibility with lines up to 8 mm in diameter
Harken quality: proven technology, reliable use, controlled cost
Easy installation and maintenance, even in demanding marine environments

SKU: 344 | Barcode: 097653100393

€72⁹⁰ EUR €82³⁴

Sheave diameter (mm) 29 mm
Sheave diameter (in) 1 1/8 in
Length (mm) 73 mm
Length (in) 2 7/8 in
Weight (g) 74 g
Weight (oz) 2.6 oz
Max rope diameter (mm) 8 mm
Max rope diameter (in) 5/16 in
Maximum working load (kg) 449 kg
Maximum working load (lb) 990 lb
Breaking load (lb) 2000 lb
Breaking load (kg) 907 kg
Shackle pin diameter (mm) 5 mm
Shackle pin diameter (in) 3/16 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.