Catalog    Search    Main Categories > Rigging > Sheaves & Blocks > Sheaves Tapered Bearing Sheaves   • McKissick Tapered Bearing Sheaves are designed to operate on shafts machined to + /- .0005 of the indicated shaft size. Applications should provide for tightening separator plates against bearing cones to adjust and insure proper function of bearing. For sizes not listed, McKissick Finished Bore Sheaves can be equipped with tapered bearing at an optional charge. • Roll Forged sheaves are available in sizes up to 72" in diameter.