Evaporative Cooler Motor Motor Type Capacitor-Start Enclosure Open Dripproof HP 3/4 Number of Speeds 1 Nameplate RPM 1725 56Z Frame Voltage 230 60 Hz 1 Phase 5.5 Full Load Amps Mounting Ring Thermal Protection Auto Insulation Class B Service Factor 1 Bearings Ball Ambient Temperature 40â”C Rotation CWSE Length Less Shaft 7-7/8 In. Overall Length 9-9/16 In. Shaft Dia 1/2 In. Shaft Length 1-11/16 In. Ring Dia 2-1/2 In. Ring to Ring Center 7-7/16 In.