Name: Bullet double recessed 29 flat. Stainless steel
Brand: HARKEN
SKU: 289
Price: 72.00 USD
Availability: InStock

Voir tous les produits de la catégorie double pulley

Bullet double recessed 29 flat. Stainless steel - HARKEN

Designed to provide reliable and quick guidance for outhauls. Compact, lightweight, and easy to integrate into your adjustment systems, this double block ensures low friction even under high loads.

Length: 95 mm (3 3/4 in)
Sheave Ø: 29 mm (1 1/8 in)
Weight: 60 g (2.12 oz)
Max. Line Ø: 8 mm (5/16 in)
Maximum Working Load: 181 kg (400 lb)
Breaking Load: 907 kg (2000 lb)
Hole Spacing: 79 mm (3 1/8 in)
Recess Cut-out: 19 x 67 mm (3/4 x 2 5/8 in)

The Harken Bullet 29mm flush-mount stainless steel double block stands out with its optimized design for perfect integration on board, while significantly reducing the friction coefficient.

Ball bearings ensure smooth rotation under all loads, guaranteeing quick and jerk-free maneuvers.
High-grade stainless steel construction for exceptional resistance to marine corrosion.
Double sheave allowing the simultaneous passage of two outhauls, ideal for optimizing storage and rigging management.
Easy flush-mounting thanks to its standard dimensions, compatible with most mounting surfaces on board.
Recognized quality of the Harken brand, a leader in pulley system innovation.

SKU: 289 | Barcode: 097653010104

$72⁰⁰ USD

Length (in) 3 3/4 in
Sheave Ø (mm) 29 mm
Sheave Ø (in) 1 1/8 in
Length (mm) 95 mm
Weight (g) 60 g
Weight (oz) 2.12 oz
Max rope Ø (mm) 8 mm
Max rope Ø (in) 5/16 in
Screw (mm) 5 RH mm
Screw (in) #10 RH in
Hole spacing (mm) 79 mm
Hole spacing (in) 3 1/8 in
Cutout (mm) 19 x 67 mm
Cutout (in) 3/4 x 2 5/8 in
Maximum working load (kg) 181 kg
Maximum working load (lb) 400 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.