... or Open loop system. The performance is abosolutelydefferent with normal inverter motor. It is used on numrecalmachine tools. ... industry, such asmetal, etc. GM7 inverter (spindle) motor , it is compose with stator,rotors,low noise force cooling fan ... endDeep groove ball bearing, seals on both sidesStandard :with keyway and key, or according customer requirementVibration classRotation resolutionClass ...