Name: Air Block 16mm HL plate
Brand: HARKEN
SKU: 416HL
Price: 76.00 USD
Availability: InStock

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Air Block 16mm HL plate - HARKEN

Compact and powerful, the Harken® 16 mm HL (High Load) Air Block with becket is the smallest block in the range, specially designed for fine-tuning on racing dinghies. Its modern engineering incorporates a patented bearing system with captive stainless steel balls, ensuring optimized performance and exceptional resistance to high loads.

Sheave Ø: 16 mm
Overall length: 46 mm
Weight: 12 g
Maximum rope diameter: 5 mm
Maximum working load: 226 kg
Maximum breaking load: 544 kg

It features a high maximum working load, making it the ideal choice for demanding maneuvers on high-tech dinghies. Where other blocks might fail under intense tension, the 416 HL excels thanks to its advanced bearing and quality materials.

Patented bearing with captive balls for ultra-smooth operation and increased longevity
Optimized architecture for easy installation and precise line adjustment
Ability to withstand very high loads despite its light weight
Compact design, perfect for confined spaces on modern dinghies
Harken® manufacturing renowned for its robustness and reliability in all conditions

SKU: 416HL | Barcode: 097653296676

$76⁰⁰ USD

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
Screw (mm) 4 RH mm
Screw (in) #8 RH in
Maximum working load (kg) 226 kg
Maximum working load (lb) 500 lb
Breaking load (lb) 1200lb

Breaking load (kg) 544kg

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.