... Timing pulleys i) Sheave2) V-belts: SPZ, SPA, SPB, SPC; A, B, C, Z, wrapped V-belts, raw-edge V ... ) V-belt pulleys for taper bushes: SPZ, SPA, SPB, SPC; up to 10 grooves b) Adjustable speed V-belt pulleys ... 5, SPA/6, SPB/1, SPB/2, SPB/3, SPB/4, SPB/5, SPB/6, SPB/8, SPB/10, SPC/3, SPC/4, SPC/5, SPC/6, SPC ... /8, SPC/10 b) V-belt pulleys ...