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Relubrication Intervals ChartFor Motors Having Grease FittingsHours of Service HP Range SuggestedPer YearRelube Interval5000 1/18 to 7 1 / 2 5 years10 to 40 3 years50 to 100 1 yearContinuous Normal to 7 1 / 2 2 yearsApplications 10 to 40 1 year50 to 100 9 monthsSeasonal Service - All 1 yearMotor is idle for(beginning of6 months or more season)Continuous high 1/8 to 40 6 monthsambient, high 50 to 150 3 monthsvibrations, or whereshaft end is hotCaution: Keep grease clean. Lubricate motors at a standstill. Do not mix petroleumgrease and silicone grease in motor bearings.-40-
CHAPTER VIIICommon Motor Types andTypical ApplicationsAlternating Current DesignsSingle Phase * Rigid Base Mounted * Capacitor Start * Totally Enclosed FanCooled (TEFC) & Totally Enclosed Non-Vent (TENV)General purpose including compressors, pumps, fans, farm equipment,conveyors, material handling equipment and machine tools.Single Phase * Rigid Base Mounted * Capacitor Start * Open DripProof (ODP)General purpose including compressors, pumps, conveyors, fans, machinetools and air conditioning units - usually inside or where protected fromweather, dust and contaminants.Three Phase * Rigid Base Mounted * TEFCGeneral purpose including pumps, compressors, fans, conveyors, machinetools and other applications where three-phase power is available.Three Phase * Rigid Base Mounted * ODPGeneral purpose including pumps, compressors, machine tools, conveyors,blowers, fans and other applications requiring three-phase power, usuallyinside or where protected from weather, dust and contaminants.Single Phase * NEMA C Face Less Base * Capacitor Start * TEFC & TENVPumps, fans, conveyors, machine tools and gear reducers.Single Phase * NEMA C Face Less Base * Capacitor Start * ODPFans, blowers, compressors, tools and speed reducers.Three Phase * NEMA C Face Less Base * TEFC & TENVFans, blowers, compressors, tools and speed reducers where three-phasepower is suitable.Three Phase * NEMA C Face Less Base * ODPFans, blowers, compressors, tools and speed reducers.-41-
Page 1: BASIC TRAININGMOTORS, GEARS & DRIVE
Page 4 and 5: VI. Metric (IEC) Designations . . .
Page 6 and 7: ment of the phase winding groups in
Page 8 and 9: CHAPTER IIGeneral Motor Replacement
Page 10 and 11: • Voltage.• Amperage (F.L.A.) -
Page 12 and 13: Capacitor Start motors are designed
Page 14 and 15: The following table can be used to
Page 16 and 17: Gearmotors may be either integral,
Page 18 and 19: Explosion Proof motors meet Under-w
Page 20 and 21: Motor Frame Dimensions(inches)NEMAF
Page 22 and 23: Types of MountsRigid base is bolted
Page 24 and 25: Belt TensioningManufacturers of bel
Page 26 and 27: Hertz / FrequencyIn North America 6
Page 28 and 29: For easy reference, standard NEMA s
Page 30 and 31: Three Phase Motors - 230 & 460 Volt
Page 32 and 33: Reading a LEESON Model NumberThere
Page 34 and 35: CHAPTER VIMetric (IEC) Designations
Page 36 and 37: IEC Enclosure Protection IndexesLik
Page 38 and 39: S8Continuous operation with periodi
Page 42 and 43: Washdown-Duty * Single & Three Phas
Page 44 and 45: IEC Metric Motors * Three PhaseFor
Page 46 and 47: CHAPTER IXGear Reducers and Gearmot
Page 48 and 49: GearmotorsThree-phase NEMA C face A
Page 50 and 51: Reducers having hollow output shaft
Page 52 and 53: ating refers to the power a reducer
Page 54 and 55: Gear Reducer MaintenanceIndustrial
Page 56 and 57: There are two basic drive types rel
Page 58 and 59: ined with feedback devices such as
Page 60 and 61: Torque: This is the most critical a
Page 62 and 63: Drive StatusSpeed SetpointRUN > 56.
Page 64 and 65: Constant-speed blower kitscan be ad
Page 66 and 67: Mechanical CharacteristicsConvertin
Page 68 and 69: CHAPTER XIIGlossaryActuator: A devi
Page 70 and 71: Counter Electromotive Force: Voltag
Page 72 and 73: Hertz: Frequency, in cycles per sec
Page 74 and 75: Polyphase or three-phase motors are
Page 76 and 77: Rectifier: A device or circuit for
Page 78 and 79: Thermocouple: A pair of dissimilar
Page 80: Go On-LineWith LEESON!Keep current

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