Harken's 76mm Big Boat sheave is used for special mainsheet, spinnaker sheet, afterguy/foreguy, or footblock applications as well as a replacement sheave in a Big Boat block.
It is made of hardcoat-anodized, PTFE-impregnated 6061-T6 aluminum and features Torlon rollers to carry high radial loads and carbon-black Delrin balls to support sideloads and provide UV protection.
|Breaking Load (lbs)||9900|
|Hole Sizing (in)||3/8|
|Hole Sizing (mm)||10|
|Safe Working Load (lbs)||4950|