... length 50 mm; shaft 3.175 mm, fixing screw 2-M3.0 mm. Operating voltage: 3.6~60V ... , printer, air pump, vending machine, blender, , drill & screw driver, forest tools, etc.ModelVoltageNo LoadAt Max. EfficiencyStall TorqueOperating Range(V ... cmRS-540S-50454.5 ~ 12.0 12.017,8000.9815,3006.15320.050.2668.12,278RS-540S- ... .7792RS-545S-24869.0 ~ 30.012.04,8000.253,8000.99175.06.8357.5840RS-545-1714512.0~45. ...