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Stepper Motors1.8 2-phase stepper motorsNEMA 231.8 2-phase stepper motors
Stepper motorsProduct overview1.8 2-phaseProduct offer2-phase stepper motorsM-14 M-17 M-22 M-34 SizeNEMA14172334Holding torqueoz-in1032 . 7590 . 239408 . 1090N-cm723 . 5364 . 169288 . 770Number of full stepsper revolutionStep angle α200 1.8Number of leads4Motor typesShaft versionM-14 inchesmmRound shaftØ 0.197 Ø 5.0with single flat featureCenteringcollarFlange sizeLengthswithout shaftinchesmmWindingMotorOptionalconnection rear shaft (1)OptionalencoderinchesmminchesmmØ 0.866 Ø 221.3935.31.02262-phase full coil forbi-polar operation4 flyingleadsRound shaftSingle-end ordifferentialØ 0.866 Ø 221.6742.31.341.571.893440482-phase full coil forbi-polar operation4 flyingleadsFlat featureextending to rearend bellSingle-end ordifferential2.2256.41.772.132.994554762-phase full coil forbi-polar operation4 flyingleadsFlat featureextending to rearend bell (2)Single-end ordifferential3.38686.02.483.154.7263801202-phase full coil forbi-polar operation4 flyingleadsFlat feature onround shaftSingle-end ordifferentialM-17 Round shaftØ 0.197 Ø 5.0with single flat featureM-22 Round shaftØ 0.25with single flat featureØ 6.35 Ø 1.50Ø 38M-34 Round shaftØ 0.554 Ø 14.0 Ø 2.874 Ø 73with single flat feature(1) Optional rear shaft available except for NEMA23 2.4amp motors.(2) Optional rear shaft on NEMA23 6.0amp motors is round without a flat feature.2
NEMA23 stepper motorsCharacteristics1.8 2-phaseAmbient conditionsAmbient temperature C-25 . 40Max. installation heightover m.s.l. without powerlossm 1000Transport and storagetemperature C-25 . 70Relative humidity%15 . 85, no condensation allowedThermal class130 (B)Electrical and mechanical dataNEMA23M-2218-2.4S M-2222-2.4S M-2231-2.4S M-2218-3.0 M-2222-3.0 M-2231-3.0 M-2218-6.0 M-2222-6.0 M-2231-6.0 Stack ublePhase currentamps2.42.42.43.03.03.06.06.06.0Holding 50.003680.00650.00170.003970.00680.48Rotor 8Phase inductancemH2.44.05.41.52.63.360.470.731.04Phase 01000480600100047070010003
NEMA23 stepper motorsCharacteristics (continued)1.8 2-phaseSpeed-torque curvesM-2218-2.4SM-2222-2.4STorque in Oz-In (N-cm)225 (159)225 (159)24VDC45VDC75VDC175 (124)Torque in Oz-In (N-cm)24VDC45VDC75VDC175 (124)225 (159)125 (88)125 (88)75 (53)75 (53)75 (53)25 (18)25 (18)02000(600)4000(1200)6000(1800)00Speed in full steps per second (rpm)M-2218-3.0 25 (18)2000(600)4000(1200)6000(1800)M-2222-3.0 0225 (159)225 (159)24VDC45VDC75VDC175 (124)225 (159)75 (53)75 (53)75 (53)25 (18)25 (18)25 (18)006000(1800)04000(1200)6000(1800)M-2222-6.0 Torque in Oz-In (N-cm)225 (159)225 (159)175 (124)024VDC45VDC75VDC175 (124)225 (159)75 (53)75 (53)75 (53)25 (18)02000(600)4000(1200)6000(1800)Speed in full steps per second (rpm)024VDC45VDC75VDC175 (124)125 (88)06000(1800)Torque in Oz-In (N-cm)125 (88)04000(1200)Speed in full steps per second (rpm)125 (88)25 (18)2000(600)M-2231-6.0 Torque in Oz-In (N-cm)24VDC45VDC75VDC0Speed in full steps per second (rpm)Speed in full steps per second (rpm)M-2218-6.0 2000(600)24VDC45VDC75VDC175 (124)125 (88)4000(1200)6000(1800)Torque in Oz-In (N-cm)125 (88)2000(600)4000(1200)Speed in full steps per second (rpm)125 (88)02000(600)M-2231-3.0 Torque in Oz-In (N-cm)175 (124)0Speed in full steps per second (rpm)Torque in Oz-In (N-cm)24VDC45VDC75VDC24VDC45VDC75VDC175 (124)125 (88)04M-2231-2.4STorque in Oz-In (N-cm)25 (18)2000(600)4000(1200)6000(1800)Speed in full steps per second (rpm)002000(600)4000(1200)6000(1800)Speed in full steps per second (rpm)
NEMA23 stepper motorsDimensions1.8 2-phaseNEMA23, dimensions in inches (mm)0.811 0.02(20.6 0.5)L0.197 (5.0)Ø 0.197 0.010 (Ø 5.0 0.25) [4x]eq.spaced on DBC 2.625 (66.67)0.59 0.008(15.0 0.02)3amp: M2 [2x]6amp: #2-56 [2x]UNC-2B x0.125 (3.18) deep0.56 (14.3)motor rearoptional rear shaft0.228 0.009(5.8 0.1)0.228 0.009(5.8 0.1)Ø 0.25 (Ø 6.35)0.063 (1.60)flat extends to rear end bellØ 0.25 0-0.001(Ø 6.35 0-0.013 )Ø 1.50 0.002(Ø 38.10 0.05)Ƒ 1.85Ƒ 47.1)Ƒ 2.22(Ƒ 56.39)(11.8 (300.0)3amp: M3 [2x]6amp: #4-40 [2x]UNC-2B x0.125 (3.18) deep0.75 0.008(19.0 0.2)1.811 0.008(46.0 0.2)L2.4 amp motor3.0 amp motor6.0 amp motorM-2218 1.77 (45)1.77 (45)1.75 (44.5)M-2226 2.13 (54)2.13 (54)2.2 (56)M-2231 2.99 (76)2.99 (76)3.09 (79)5
Part numbersNEMA23 stepper motors1.8 2-phaseReferencesM-2318- 2.4SMotor typeM stepper motorExample:M-2318- 2.4SFlange size23 NEMA23 (57 mm)M-2318- 2.4SMotor length18 single stack22 double stack31 triple stackM-2318- 2.4SPhase current2.4 2.4 amp3.0 3.0 amp6.0 6.0 ampM-2318- 2.4SShaftS single shaftD double shaft (1)SOptional encoderSelecting the encoder option replaces theshaft designator in the part numberES100ES single-end optical encoder with index mark (2)ED differential optical encoder with index mark (2)100 line count200 line count250 line count400 line count500 line count1000 line count (2)(1) Not available with 2.4amp NEMA23 motors.(2) All encoders have an index mark, except the 1000 line count version.6
AccessoriesStepper motorsEncodersOptical encoder, dimensions in inches (mm)Ø 0.078 (Ø 1.98) [3x]0.823 (20.9)eq.spaced on DBC0.600(15.2)Ø 0.109 (Ø 2.7) oder typesingle-enddifferentialNumber of signals35Line counts100, 200, 250, 400, 500 or 1000 (1)(1) All encoders have an index mark, except the 1000 line count version.Encoder cables (2)Lengthfeet (m)Part number1.0 (0.3)ES-CABLE-26.0 (1.8)ED-CABLE-6Pre-wired mating connector with other cable endopen. For single-end optical encoder For differential optical encoder(2) Cable is not included with single-end encoders and must be ordered separately. Cable is included withdifferential encoders.7
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6 References Example: M - 2 3 1 8 - 2 . 4 S Motor type M stepper motor M - 2 3 1 8 - 2 . 4 S Flange size 23 NEMA23 (57 mm) M - 231 8 - 2 . 4 S Motor length 18 single stack 22 double stack 31 triple stack M - 2 3 18- 2 . 4 S Phase current 2.4 2.4 amp 3.0 3.0 amp 6.0 6.0 amp M - 2 3 1 8 - 2 . 4 S Shaft S single shaft D double shaft (1) S Optional encoder
