•Meets NEMA Premium® efficiency •10:1 Variable torque, see Inverter Duty column for constant torque •MAX GUARD® Class F insulation system •Blue Chip® quality, 100% cast iron construction for rigidity and reduced vibration •Internal and external epoxy paint •1.15 Service Factor on sinewave or 1.0 Service Factor on IGBT power •Precision balanced to .08”/sec, Extended grease tubes •Normally closed thermostats (must be connected to control circuit) •Meets temperature code T3B, Shaft slinger •Roller bearing on shaft end for belted load only