Harken

Harken 75mm Low Load Block

Harken 75mm Low Load Block

Brand: Harken
Part Number: 3243
$431.95

Black Magic Air blocks are a top favorite of Big Boat performance racers and cruisers. These lightweight, free-running, powerful performers are used for sail controls that see lots of action: mainsheet, runner, halyard, and spinnaker systems. A center cage keeps Torlon® roller bearings separated and parallel to reduce friction. Shackle blocks lock in two directions or swivel to keep line from twisting.

The low-load block has a red isolator. It uses Delrin® ball bearings, with a 17-4 PH stainless headpost and 316 stainless steel shackles.

Sheave Ø (mm)75 mm
Sheave Ø (in)2 15/16 in
Length (mm)129 mm
Length (in)5 1/8 in
Weight (g)335 g
Weight (oz)11.82 oz
Shackle pin Ø (mm)8 mm
Shackle pin Ø (in)5/16 in
Maximum line Ø (mm)14 mm
Maximum line Ø (in)9/16 in
Maximum working load (kg)1361 kg
Maximum working load (lb)3000 lb
Breaking load (kg)2722 kg
Breaking load (lb)6000 lb


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