Name: Bullet single cable Ringot 29 mm
Brand: HARKEN
SKU: 99
Price: 31.63 EUR
Availability: InStock

Voir tous les produits de la catégorie simple pulley

Bullet single cable Ringot 29 mm

More details

The Harken 29 mm Ringot single-sheave Bullet block is designed to provide precise and smooth guidance for control lines aft, thanks to its low friction coefficient. Compact, lightweight, and robust, it ensures excellent speed of hauling and release, regardless of load conditions, thanks to its cable-resistant aluminum sheave.

Sheave Ø: 29 mm
Overall length: 70 mm
Weight: 35 g
Maximum rope Ø: 8 mm
Maximum working load: 227 kg
Breaking load: 907 kg

The Harken 29 mm Ringot single-sheave Bullet stands out for its exceptional lightness combined with impressive strength. It features high-performance needle bearings, capable of supporting high loads while maintaining smooth and reliable handling. Its PTFE-impregnated hardcoat anodized aluminum sheave ensures superior resistance to electrolytic corrosion, thus extending the product's lifespan even in the most demanding marine environments.

Ultra-low friction for optimized performance during quick adjustments
PTFE-impregnated hardcoat anodized aluminum sheaves, synonymous with robustness and longevity
High-capacity needle bearings, to withstand intense loads without compromising fluidity
Compact design intended to integrate easily into most adjustment configurations
Suitable for ropes up to 8 mm, perfect for a wide range of nautical applications

SKU: 99 | Barcode: 097653003052

€31⁶³ EUR

Sheave Ø (mm) 29 mm
Sheave Ø (in) 1 1/8 in
Length (mm) 70 mm
Length (in) 2 3/4 in
Weight (g) 35 g
Weight (oz) 1.25 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.