Name: Bullet single cable 29 mm
Brand: HARKEN
Price: 26.74 EUR
Availability: InStock

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Bullet single cable 29 mm - HARKEN

Bullet single cable 29 mm: optimal guidance & robust needle bearings.

More details

The Harken 29 mm Single Wire Bullet block is designed to provide optimal rope guiding, combining performance, robustness, and a compact design. Thanks to its low friction and light weight, this block is ideal for ensuring smooth maneuvering under high or low loads, thanks to its wire-resistant aluminum sheave.

Overall length: 51 mm
Sheave diameter: 29 mm (1 1/8 in)
Weight: 28 g (1 oz)
Maximum rope diameter: 8 mm (5/16 in)
Maximum working load: 227 kg (500 lb)
Breaking load: 907 kg (2000 lb)

It stands out from standard blocks thanks to needle bearing technology that supports significantly higher loads than common models in the same category. Its PTFE-impregnated hardcoat anodized aluminum sheave, a Harken exclusive, ensures increased resistance to electrolytic corrosion and extends durability, even in the most demanding marine environments.

Needle bearings to support high loads smoothly
PTFE-impregnated hardcoat anodized aluminum sheave: robustness and corrosion resistance
Compact: facilitates integration and mounting on all types of decks
Lightweight: only 28 g for maximum performance without weighing down the rigging
Available in several variants to adapt to all configurations

SKU: 98 | Barcode: 097653003045

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€26⁷⁴ EUR

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Length (in) 2 in
Sheave Ø (mm) 29 mm
Sheave Ø (in) 1 1/8 in
Length (mm) 51 mm
Weight (g) 28 g
Weight (oz) 1 oz
Max. rope Ø (mm) 8 mm
Max. rope Ø (in) 5/16 in
Maximum working load (kg) 227 kg
Maximum working load (lb) 500 lb
Breaking load (kg) 907 kg
Breaking load (lb) 2000 lb

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.