Harken's 178mm 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)||28000|
|Breaking Load (kg)||12698|
|Max Line Size (in)||7/8|
|Max Line Size (mm)||22|
|Note||Fastener Circle: 2-1/2" (64 mm)|
|Safe Working Load (lbs)||14000|
|Safe Working Load (kg)||6349|