b'Big Boat SheavesBig Boat sheaves are available for special applications as well as for replacement sheaves in Big Boat blocks. Made of Hard Lube-anodized, 6061-T6 aluminum, sheaves fea-ture Torlon rollers to carry high radial loads and carbon-black Delrin ball bearings to support sideloads and provide UV-protection. Select sheaves based on load-carrying capability.Installation requires clamping or securing inner race. Torlon roller/ball bearing systemUse for:Mainsheets Hard Lube-anodizedSpinnaker sheets 6061-T6 aluminumAfterguy/foreguy Carbon-black balls for UV-protectionFootblocksXp 55, X-YachtsX-Yachts5006031539518519520 657 550Sheave Center pin Fastener Max line Maximum BreakingPartWidth WeightFasteners circleworking load loadNo. in mm in mm oz g in mm in mm in mm in mm lb kg lb kg5003762261703/8109/16144950224599004490 7/8103/8 5184 1/2114125164543/419.13/81 3/8353/41875003401150006803 10 5195 1/21401 1/829277657/822.283/8101 5/8417/822910041278254 18200 1 1/22 1/2 52071781 1/829451280381/212647/8221400063492800012698 55041027/822102843/8103/8109/161449502245990044906033761 9/16402843/8103/8103/4184950224599004490 10 6574 1/21141 5/841257093/419.11 3/8357/8181485067362970013472 3/810 1539641 3/83571985/168.15/1681/2123000136160002721 2 1/2 Delrin is a registered trademark of E. I. du Pont de Nemours and Company or its affiliates.Torlon is a registered trademark of Solvay Advanced Polymers, L.L.C. 77'