... Voltage: 3~24V No load Speed 3,500~15,000r.p.m Output:2.5~35W Models RK-510(3429),, Carbon ... : 3~24V, At no load Speed 3,500~15,000 r.p.m, Output about 2.5~35W. fit for gear box ... machine, etc.ModelVoltageNo LoadAt Max. EfficiencyStall TorqueOperating Range(V)NominalSpeedCurrentSpeedCurrentTorqueOutputEffVr.p.mAr.p.mAg.cmW%g.cmRK-510-231506.0 ~ 15.012 ...