Name: 29mm Recessed Bullet
Brand: HARKEN
SKU: 88
Price: 37.00 USD
Availability: InStock

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29mm Recessed Bullet - HARKEN

The Harken 29mm Flush Mount Bullet block, renowned for its low friction coefficient, is ideal for efficiently guiding control lines on any type of sailboat. Compact and lightweight, it ensures optimal performance and great versatility during maneuvers, whether under high or light loads.

Sheave Ø: 29 mm
Overall length: 76 mm
Weight: 35 g
Maximum working load: 136 kg
Max rope Ø: 8 mm

The Harken 29mm Flush Mount Bullet block stands out for its compact design and fast sheeting, ensuring quick handling of lines even under heavy loads. Its exceptional breaking strength (907 kg) makes it a preferred choice for demanding sailors seeking reliability and safety in all conditions. Its compatibility with a wide range of ropes and ease of installation, thanks to a 57 mm hole spacing, give it great adaptability for multiple onboard configurations.

Low friction coefficient for ultra-smooth glide
Robust Harken construction, ensuring a long lifespan
Quick installation thanks to its standardized dimensions and optimized cutouts (19 x 44 mm)
Excellent load resistance with a record breaking load of 907 kg
Lightweight design (only 35 g), perfect for optimizing the weight of your deck hardware.

SKU: 88 | Barcode: 097653002949

$37⁰⁰ USD

Length (in) 3 in
Sheave Ø (mm) 29 mm
Sheave Ø (in) 1 1/8 in
Length (mm) 76 mm
Weight (g) 35 g
Weight (oz) 1.25 oz
Max. line Ø (mm) 8 mm
Max. line Ø (in) 5/16 in
Screw (mm) 5 FH mm
Screw (in) #10 FH in
Hole spacing (mm) 57 mm
Hole spacing (in) 2 1/4 in
Cutout (mm) 19 x 44 mm
Cutout (in) 3/4 x 1 3/4 in
Max. working load (kg) 136 kg
Max. working load (lb) 300 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.