... pulleys8) SheavesV-belts: SPZ, SPA, SPB, SPC; A, B, C, Z, wrapped V-belts, raw-edge V-belts, cogged V-belts V-beltpulley specifications:1) European standard: a) V-belt pulleys ... , 5V, 8V d) Sheaves for 3L, 4L or A, and 5L or B belts: AK, AKH, 2AK, 2AKH, BK, BKH,2BK, 2BKH ... , 3BK e) Adjustable sheaves: poly V-pulley, multi-pitch H ...