... -beltsV-belt pulley specifications: 1) European standard: a) V-belt pulleys for taper bushes: SPZ, ... Flat belt pulleys and conveyor belt pulleys2) American standard: a) Sheaves for taper bushes: 3V, 5V, ... ; OEM inquiries welcomed Timing pulley specifications:1) Models: a) XL037, L050, L075, L100, H075, H100, ... v-belt pulleys d) Flat belt pulleys2) American standard: a) Sheaves for taper bushes: 3V, 5V, ...