... No load Speed 2000~25000r.p.m Output:5~75W DC motors models RS-540 or RS-545, Carbon brush dc motor ... 60V, At no load Speed 2,000~25,000 r.p.m, Output about 3~75W. fit for power tools, ... etc.ModelVoltageNo LoadAt Max. EfficiencyStall TorqueOperating Range(V)NominalSpeedCurrentSpeedCurrentTorqueOutputEffVr.p.mAr.p.mAg.cmW%g.cmRS-540S-50454.5 ~ 12.0 ... .128,0650.6420016.5664.71,561 DC Motor RS-540 & RS-545