Marathon Motors Oil Burner Motor, 4733, 5KH39DNA533T, 1/4HP, 1725RPM, 115V, 1PH, 48Y, OPENDesigned for replacement of virtually any NEMA 48 and 56 frame belt drive furnace blower motors. PDQ models have 1 1/2 extended splined hub on opposite shaft end for quick and easy positioning of resilient ring to properly fit the pre-existing motor base. Product Specifications BRANDMarathon Motors MANUFACTURERS PART NUMBER4738 HORSEPOWER1/4 MOTOR RPM 60Hz1725 VOLTAGE115 PHASE1 FRAME48Y ENCLOSURE TYPEOpen/Drip Proof HERTZ60 SPEEDS1 ROTATIONCW THERMAL PROTECTIONAutomatic RATED RPM1725 MOUNTINGRB (Resilient Base) BEARING TYPEBall DRIVE END BEARING SIZE6203 OPPOSITE END BEARING SIZE6203 INSULATION CLASSB SERVICE FACTOR1.35 AMBIENT TEMP C40 DUTYContinuous is_motorYes WEIGHT LBS13 RPM RANGE1701-1800 OPPOSITE END BEARINGBall FL AMPS5.1 ENCLOSUREOPEN