... 30,Ø45,Ø60mm to Ø65mm. Bearing: Nylon bearing,Lubricating bearing and Ball bearing can be choosed. Product Features: ... core specifications as requested.5.Bearing: Nylon bearing,Lubricating bearing and Ball bearing can be choose.6.Favorable ... VoltageRated PowerRated SpeedFrequencyAir FlowRotationBearingVACWRPMHzM3/HNylon bearing, Lubricating bearing and Ball bearing can be choosedGLF30X100120V/220V8W to ...