motor HL5420F-8motor size:At maxinum efficiencyLamination Dimension:φ54mmefficiency:73%length:87mmtorque:0.5kg.cmShaft Diameter:φ4.5mmSpeed:17700rpmCurrent:1.13AmpNominal Voltage120V/60HZoutput:98WattsAT no loadSpeed :28000rpmCurrent:0.59AmpInput:70Watts