Name: Air Block 16mm plate
Brand: HARKEN
SKU: 416
Price: 22.65 EUR
Availability: InStock

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Air Block 16mm plate - HARKEN

Harken®'s 16 mm Air Block Cheek Block is the smallest in the range, designed specifically to optimize precise adjustments on high-tech dinghies. Thanks to its patented bearing technology, it guarantees exceptional efficiency and reliability, even in the most demanding conditions.

Sheave diameter: 16 mm
Overall length: 46 mm
Ultra-light weight: 12 g
Maximum rope diameter: 5 mm
Maximum working load: 113 kg

This Harken® model maintains an impressive working load of 113 kg while weighing only 12 grams.

Patented bearing system with stainless steel balls for friction-free rotation and extended lifespan
Suitable for modern synthetic ropes up to 5 mm in diameter
Solid, corrosion-resistant Harken® construction to withstand salt and intensive use
Easy installation with 4 mm (#8 RH) screws
Ideal for fine adjustments on high-tech dinghies, optimizing speed and maneuverability

Choose the 16 mm Air Block Cheek Block, praised by sailing enthusiasts looking for the best block for their dinghy.

SKU: 416 | Barcode: 097653016076

€22⁶⁵ EUR

Sheave Ø (mm) 16 mm
Sheave Ø (in) 5/8 in
Length (mm) 46 mm
Length (in) 1 13/16 in
Weight (g) 12 g
Weight (oz) .44 oz
Max. rope Ø (mm) 5 mm
Max. rope Ø (in) 7/32 in
Screws (mm) 4 RH mm
Screws (in) #8 RH in
Max. working load (kg) 113 kg
Max. working load (lb) 250 lb
Breaking load (lb) 1200 lb
Breaking load (kg) 544 kg

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.