Stepper Motor Specs Comparison

 

Part
Number

Photo

Nema
Frame

Holding
Torque

Rated
Current

Rated
Voltage

Induct-
ance

Rotor
Inertia

Shaft
Diameter

23HT175

23HT175 Photo

23

175 oz
in

1.41
amps

5.1
volts

11.0
mH

1.64 oz-in2


0.250
in

23HT350

23HT350 Photo

23

350 oz
in

6.6
amps

1.85
volts

1.54
mH

4.59 oz-in2

0.250
in

34HT390

34HT390 Photo

34

390 oz
in

6.6
amps

1.79
volts

1.57
mH

5.47 oz-in2

0.375
in

34HT750

34

750 oz
in

7.5
amps

1.275
volts

1.4
mH

10.39 oz-in2

0.560
in

34HT1275

34

1275 oz
in

9.5
amps

1.9
volts

2.3
mH

16.4 oz-in2

0.560
in

42HT1700

42

1700 oz
in

9.0
amps

1.35
volts

1.6
mH

59.6 oz-in2

0.625
in

42HT4000

42ht4000 Photo

42

4000 oz
in

8.0
amps

5.36
volts

11
mH

88.6 oz-in2

0.750
in

Note: Motor part numbers are for single shaft. Append "D" to part # for double shaft.