... ) SheavesV-belts: SPZ, SPA, SPB, SPC; A, B, C, Z, wrapped V-belts, raw-edge V-belts ... , SPA, SPB, SPC; up to 10 grooves b) Adjustable speed V-belt pulleys and variable speed pulleys ... a) Sheaves for taper bushings: 3V, 5V, 8V b) Sheaves for QD bushings: 3V, 5V, 8V c) ... Surface finish: paint, phosphate, zinc plate5) Material: cast iron, ductile iron, nylon, aluminum6) Made according to drawings and/or ...