Baldor-Reliance Motor, 20HP,1765RPM,3PH,60HZ,256T,3944M,OPSB,F1Features:Ball bearingsSuitable for mounting any positionHeavy gauge steel and cast iron framesTypical Applications:Pumps, compressors, fans, conveyors, machine tools and other applications where 575 volt three phase power is available. Product Specifications HORSEPOWER20 ENCLOSUREOPSB FRAME256T MOUNTINGRigid NAMEPLATE RPM1765 PHASE3 MOTOR RPM 60Hz1765 VOLTAGE575 HERTZ60 SERVICE FACTOR1.15 AMBIENT TEMP C40 WEIGHT237 RPM RANGE1701-1800 DESIGN CODEB BEARING-DRIVE-END6309 BEARING-OPP-DRIVE-END6208 FL EFFICIENCY93 INSULATION CLASSF FL AMPS18.9 KVA-CODEH 208V AMPS-- BRANDBaldor-Reliance DOE-CODE-- MANUFACTURER PART #EM2515T-5 is_motorYes ENCLOSURE TYPEOpen/Drip Proof POWER-FACTOR85 DRIVE END FLANGEStandard C-DIMENSION INCHES21.69 SERIAL-NUMBER-- POLES4 SPEC. NUMBER39K057W948