... 5 Unit Conversion: 1g.cm≈0.098mN.m≈0.014oz.in 1mm=0.039in 1g=0.035ozElectric model motorDimension: φ 37.0 x 60 L. shaft ... statorSr ferrite permanent magnet3, 5, 7, 8, 9, 12,16 slots armatureSilicon-steel lamination with epoxy coatingHigh-carbon steel shaftCu-Ag ... magnet wire-40oC ~ 220oC bearing lubricantNeodymium magnets mini dc motor with 12v,diameter36.8mm,high rmp motor,used for air pump motor