Harken 7 in. Sheave

Harken 7 in. Sheave

Product Details


    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: 520

    Tech Info

    Imperial Metric
    Sheave Dia. 7" 178 mm
    Width 1 1/8" 29 mm
    Weight 45 oz 1280 gr
    Center Pin Dia. 1 1/2" 38.00 mm
    Fasteners 1/2" 12 mm
    Fastener Circle 2 1/2" 64 mm
    Max Line Dia. 7/8" 22 mm
    Maximum Working Load 14000 lbs 6349 kg
    Breaking Load 28000 lbs 12698 kg