Name: Micro Block for 22mm plating
Brand: HARKEN
SKU: 233
Price: 20.90 EUR
Availability: InStock

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Micro Block for 22mm plating

More details

Specially designed for applications requiring lightness and efficiency. Ideal for windsurfing, dinghies, or low-load control lines, this block ensures optimal performance across a wide range of vessels.

Overall Length: 64 mm
Sheave Ø: 22 mm
Weight: 21 g
Max Rope Ø: 6 mm
Maximum Working Load: 91 kg
Breaking Load: 544 kg
Hole Spacing: 52 mm
Screws: 5 RH mm

The 22 mm Micro Block pulleys are characterized by their ultra-compact size and light weight, while maintaining exceptional strength. Harken technology ensures smooth and effortless use, even under high tension.

Thanks to its superior quality materials, the 22 mm Micro Block ensures a long lifespan and consistent efficiency. Its light weight doesn't add bulk to your equipment, while maintaining a robustness capable of withstanding a breaking load of 544 kg with perfect compatibility for ropes up to 6 mm.

Micro low-friction technology for smooth and effortless handling
Lightweight yet extremely robust structure, suitable for aggressive marine environments
Ideal for ropes up to 6 mm, thus covering most adjustment needs on dinghies or windsurfers
High breaking load: supports up to 544 kg, for maximum safety in all situations
Careful finish and corrosion resistance, a hallmark of Harken quality

SKU: 233 | Barcode: 097653008477

€20⁹⁰ EUR €23⁰³

Length (in) 2 1/2 in
Sheave Ø (mm) 22 mm
Sheave Ø (in) 7/8 in
Length (mm) 64 mm
Weight (g) 21 g
Weight (oz) .75 oz
Max. rope Ø (mm) 6 mm
Max. rope Ø (in) 1/4 in
Screws (mm) 5 RH mm
Screws (in) #10 RH in
Hole spacing (mm) 52 mm
Hole spacing (in) 2 1/16 in
Maximum working load (kg) 91 kg
Maximum working load (lb) 200 lb
Breaking load (kg) 544 kg
Breaking load (lb) 1200 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.