Harken 2.50 Extra Wide Sheave

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Harken Big Boat sheaves are available for special applications as well as for replacement sheaves in Big Boat blocks. Made of Hardkote-anodized, Teflon® impregnated 6061-T6 aluminum, sheaves feature Torlon® rollers to carry high radial loads and carbon-black Delrin® balls to support sideloads and provide UV protection. Select sheaves based on load-carrying capability.

Installation requires clamping or securing inner race.

Use for: Mainsheets, Spinnaker sheets, Afterguy/foreguy and Footblocks.

Part Number: 1539


Sheave Ø (mm):  64 mm
Width (mm):  35 mm
Weight (g):  198 g
Center pin Ø (mm):  8.1 mm
Fasteners (mm):  8 mm
Maximum line Ø (mm):  12 mm
Maximum working load (kg):  1361 kg
Breaking load (kg):  2721 kg


Need help to design your Harken system - take a look here for the Harken System Guides and Drawings
Or perhaps you need some other information (load calculators, block selectors, service instructions or manuals)?   Take a look here for all the official Harken Support Information