Stepper System
Stepper Motors
Hybrid and high torque stepper motors in NEMA 17, NEMA 23 and NEMA 34 frames. RB Automation is a step motor and stepping motor supplier in India. Ask for torque data.
- Application help before you buy
- Supply across India
Overview
Overview of Stepper Motors
The Stepper motor is a special motor specially designed for accurate control of position and speed. the biggest characteristics of stepper motor is 'digital'. For each pulse signal from the controller, the stepper motor driven by its drive runs at a fixed angle('one step for short').
Model Code
Naming Rule
How to read the model number and order the exact Stepper Motors variant you need.
57
1
A
2
M
3
23
4
-
◻
5
- Base size
- Step angle type code
A: 1.8 degrees
B: 1.2 degrees
C: 0.72 degrees - Motor series code
M: M series - Motor torque
06:0.6Nm
30:3.0Nm
120:12.0Nm - Non- standard code
D: double Shaft
Z2: With brake
*Model naming rules are only used for model meaning
analysis.
For
specific optional models, please refer to the details page.
20AM Series Dimension (mm)
28AM Series Dimension (mm)
20/28mm series technical specifications
| Model | Step Angle(○) | Holding torque(N.m) | Rated current(A) | Resistance/phase (ohm) | Inductance/phase (mh) | Rotor inertia (g.cm2) | Shaft diameter(mm) | Shaft Length(mm) | Length(mm) | Weight(Kg) |
|---|---|---|---|---|---|---|---|---|---|---|
| 20AM003 | 1.8 | 0.03 | 0.6 | 5.7 | 2.6 | 3 | 4 | 10 | 33 | 0.07 |
| 20AM005 | 1.8 | 0.05 | 0.6 | 7.0 | 3.4 | 38 | 4 | 10 | 45 | 0.110 |
| 28AM006 | 1.8 | 0.06 | 1.2 | 1.4 | 1.0 | 90 | 5 | 20 | 32 | 0.11 |
| 28AM01 | 1.8 | 0.10 | 1.2 | 1.8 | 1.6 | 130 | 5 | 20 | 41 | 0.13 |
| 28AM013 | 1.8 | 0.13 | 1.2 | 2.2 | 2.3 | 180 | 5 | 20 | 51 | 0.18 |
|
*NEMA 8 (20mm), NEMA 11 (28mm) |
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35A Series Dimension (mm)
39A Series Dimension (mm)
35/39mm series technical specifications
| Model | Step Angle(○) | Holding torque(N.m) | Rated current(A) | Resistance/phase (ohm) | Inductance/phase (mh) | Rotor inertia (g.cm2) | Shaft diameter(mm) | Shaft Length(mm) | Length(mm) | Weight(Kg) |
|---|---|---|---|---|---|---|---|---|---|---|
| 35A02 | 1.8 | 0.2 | 1.0 | 3.8 | 5.3 | 22 | 5 | 20 | 34 | 0.18 |
| 39A02 | 1.8 | 0.2 | 1.0 | 4.1 | 7.1 | 30 | 5 | 20 | 36 | 0.28 |
|
*NEMA 14 (35mm),NEMA 16 (39mm) |
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42A Series Dimension (mm)
42mm series technical specifications
| Model | Step Angle(○) | Holding torque(N.m) | Rated current(A) | Resistance/phase (ohm) | Inductance/phase (mh) | Rotor inertia (g.cm2) | Shaft diameter(mm) | Shaft Length(mm) | Length(mm) | Weight(Kg) |
|---|---|---|---|---|---|---|---|---|---|---|
| 42A01 | 1.8 | 0.15 | 1.0 | 1.3 | 1.9 | 41 | 5 | 24 | 34 | 0.23 |
| 42A02 | 1.8 | 0.2 | 1.2 | 2.6 | 5.1 | 57 | 5 | 24 | 40 | 0.29 |
| 42A03 | 1.8 | 0.3 | 2.0 | 1.8 | 3.8 | 82 | 5 | 24 | 47 | 0.37 |
| 42A08 | 1.8 | 0.8 | 2.0 | 1.9 | 5.0 | 114 | 5 | 24 | 60 | 0.48 |
|
*NEMA 17 (42mm) |
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42A Series Dimension (mm)
42mm series technical specifications
| Model | Step Angle(○) | Holding torque(N.m) | Rated current(A) | Resistance/phase (ohm) | Inductance/phase (mh) | Rotor inertia (g.cm2) | Shaft diameter(mm) | Shaft Length(mm) | Length(mm) | Weight(Kg) |
|---|---|---|---|---|---|---|---|---|---|---|
| 42AM02 | 1.8 | 0.2 | 1.5 | 1.3 | 1.9 | 41 | 5 | 24 | 34 | 0.23 |
| 42AM04 | 1.8 | 0.4 | 1.5 | 2.6 | 5.1 | 57 | 5 | 24 | 40 | 0.29 |
| 42AM06 | 1.8 | 0.6 | 2.0 | 1.8 | 3.8 | 82 | 5 | 24 | 47 | 0.37 |
| 42AM08 | 1.8 | 0.8 | 2.0 | 1.9 | 5.0 | 114 | 5 | 24 | 60 | 0.48 |
|
*NEMA 17 (42mm) |
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57AM Series Dimension (mm)
D57AM Series Dimension (mm)
57mm series technical specifications
| Model | Step Angle(○) | Holding torque(N.m) | Rated current(A) | Resistance/phase (ohm) | Inductance/phase (mh) | Rotor inertia (g.cm2) | Shaft diameter(mm) | Shaft Length(mm) | Length(mm) | Weight(Kg) |
|---|---|---|---|---|---|---|---|---|---|---|
| 57AM13 | 1.8 | 1.3 | 3.0 | 0.42 | 1.5 | 260 | 8 | 21 | 55 | 0.67 |
| 57AM23 | 1.8 | 2.3 | 5.0 | 0.64 | 2.7 | 460 | 8 | 21 | 76 | 1.03 |
| 57AM24 | 1.8 | 2.4 | 5.6 | 0.41 | 2.0 | 460 | 8 | 21 | 80 | 1.11 |
| 57AM26 | 1.8 | 2.6 | 5.0 | 0.47 | 2.1 | 520 | 8 | 21 | 84 | 1.20 |
| 57AM30 | 1.8 | 3.0 | 5.0 | 0.82 | 3.7 | 720 | 8 | 21 | 102 | 1.48 |
| D57AM30 | 1.8 | 3.0 | 5.0 | 0.50 | 2.2 | 690 | 8 | 21 | 86 | 1.39 |
|
*NEMA 23 (57mm) |
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86AM3E Dimension (mm)
86AM65/86AM85 Dimension (mm)
86mm series technical specifications
| Model | Step Angle(○) | Holding torque(N.m) | Rated current(A) | Resistance/phase (ohm) | Inductance/phase (mh) | Rotor inertia (g.cm2) | Shaft diameter(mm) | Shaft Length(mm) | Length(mm) | Weight(Kg) |
|---|---|---|---|---|---|---|---|---|---|---|
| 86AM35 | 1.8 | 3.5 | 4.0 | 0.81 | 3.87 | 800 | 9.5 | 32 | 64 | 1.70 |
| 86AM45 | 1.8 | 4.5 | 6.0 | 0.41 | 2.82 | 1400 | 12.7 | 32 | 78 | 2.25 |
| 86AM65 | 1.8 | 6.5 | 6.0 | 0.47 | 4.18 | 2300 | 12.7 | 32 | 98 | 2.95 |
| 86AM85 | 1.8 | 8.5 | 6.0 | 0.53 | 5.54 | 2800 | 12.7 | 32 | 112 | 3.67 |
| 86AM120 | 1.8 | 12 | 6.0 | 1.72 | 8.30 | 4000 | 15.875 | 32 | 155 | 5.10 |
| 86AM45- 14 | 1.8 | 4.5 | 6.0 | 0.41 | 2.82 | 1400 | 14 | 32 | 78 | 2.25 |
| 86AM65- 14 | 1.8 | 6.5 | 6.0 | 0.47 | 4.18 | 2300 | 14 | 32 | 98 | 2.95 |
| 86AM85- 14 | 1.8 | 8.5 | 6.0 | 0.53 | 5.54 | 2800 | 14 | 32 | 112 | 3.67 |
| 86AM100 | 1.8 | 10 | 6.0 | 0.75 | 5.30 | 3400 | 14 | 32 | 128 | 4.10 |
| 86AM120 | 1.8 | 12 | 6.0 | 1.72 | 8.30 | 4000 | 14 | 32 | 155 | 5.10 |
|
*NEMA 34 (86mm) |
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110A Series Dimension (mm)
130A Series Dimension (mm)
110/130mm series technical specifications
| Model | Step Angle(○) | Holding torque(N.m) | Rated current(A) | Resistance/phase (ohm) | Inductance/phase (mh) | Rotor inertia (g.cm2) | Shaft diameter(mm) | Shaft Length(mm) | Length(mm) | Weight(Kg) |
|---|---|---|---|---|---|---|---|---|---|---|
| 110A12 | 1.8 | 12 | 6.0 | 0.37 | 4.9 | 7200 | 19 | 56 | 115 | 6.0 |
| 110A20 | 1.8 | 20 | 6.0 | 0.80 | 15.0 | 11000 | 19 | 56 | 150 | 8.4 |
| 110A28 | 1.8 | 28 | 6.5 | 1.20 | 22 | 16200 | 19 | 56 | 201 | 11.7 |
| 130A27 | 1.8 | 27 | 6.0 | 0.65 | 13.8 | 35000 | 19 | 45 | 226 | 13.0 |
| 130A45 | 1.8 | 45 | 7.0 | 0.90 | 9.5 | 48400 | 19 | 45 | 283 | 19.0 |
|
*NEMA 42 (110mm), NEMA 52 (130mm) |
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57AM Series Dimension (mm)
D57AM Series Dimension (mm)
57mm series technical specifications
| Model | Step Angle(○) | Holding torque(N.m) | Rated current(A) | Resistance/phase (ohm) | Inductance/phase (mh) | Rotor inertia (g.cm2) | Shaft diameter(mm) | Shaft Length(mm) | Length(mm) | Weight(Kg) |
|---|---|---|---|---|---|---|---|---|---|---|
| 57AM13 | 1.8 | 1.3 | 3.0 | 0.42 | 1.5 | 260 | 8 | 21 | 55 | 0.67 |
| 57AM23 | 1.8 | 2.3 | 5.0 | 0.64 | 2.7 | 460 | 8 | 21 | 76 | 1.03 |
| 57AM24 | 1.8 | 2.4 | 5.6 | 0.41 | 2.0 | 460 | 8 | 21 | 80 | 1.11 |
| 57AM26 | 1.8 | 2.6 | 5.0 | 0.47 | 2.1 | 520 | 8 | 21 | 84 | 1.20 |
| 57AM30 | 1.8 | 3.0 | 5.0 | 0.82 | 3.7 | 720 | 8 | 21 | 102 | 1.48 |
| D57AM30 | 1.8 | 3.0 | 5.0 | 0.50 | 2.2 | 690 | 8 | 21 | 86 | 1.39 |
|
*NEMA 23 (57mm) |
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86AM3E Dimension (mm)
86AM65/86AM85 Dimension (mm)
86mm series technical specifications
| Model | Step Angle(○) | Holding torque(N.m) | Rated current(A) | Resistance/phase (ohm) | Inductance/phase (mh) | Rotor inertia (g.cm2) | Shaft diameter(mm) | Shaft Length(mm) | Length(mm) | Weight(Kg) |
|---|---|---|---|---|---|---|---|---|---|---|
| 86AM35 | 1.8 | 3.5 | 4.0 | 0.81 | 3.87 | 800 | 9.5 | 32 | 64 | 1.70 |
| 86AM45 | 1.8 | 4.5 | 6.0 | 0.41 | 2.82 | 1400 | 12.7 | 32 | 78 | 2.25 |
| 86AM65 | 1.8 | 6.5 | 6.0 | 0.47 | 4.18 | 2300 | 12.7 | 32 | 98 | 2.95 |
| 86AM85 | 1.8 | 8.5 | 6.0 | 0.53 | 5.54 | 2800 | 12.7 | 32 | 112 | 3.67 |
| 86AM120 | 1.8 | 12 | 6.0 | 1.72 | 8.30 | 4000 | 15.875 | 32 | 155 | 5.10 |
| 86AM45- 14 | 1.8 | 4.5 | 6.0 | 0.41 | 2.82 | 1400 | 14 | 32 | 78 | 2.25 |
| 86AM65- 14 | 1.8 | 6.5 | 6.0 | 0.47 | 4.18 | 2300 | 14 | 32 | 98 | 2.95 |
| 86AM85- 14 | 1.8 | 8.5 | 6.0 | 0.53 | 5.54 | 2800 | 14 | 32 | 112 | 3.67 |
| 86AM100 | 1.8 | 10 | 6.0 | 0.75 | 5.30 | 3400 | 14 | 32 | 128 | 4.10 |
| 86AM120 | 1.8 | 12 | 6.0 | 1.72 | 8.30 | 4000 | 14 | 32 | 155 | 5.10 |
|
*NEMA 34 (86mm) |
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110BM Series Dimension (mm)
110mm series technical specifications
| Model | Step Angle(○) | Holding torque(N.m) | Rated current(A) | Resistance/phase (ohm) | Inductance/phase (mh) | Rotor inertia (g.cm2) | Shaft diameter(mm) | Shaft Length(mm) | Length(mm) | Weight(Kg) |
|---|---|---|---|---|---|---|---|---|---|---|
| 110BM80 | 1.2 | 8.0 | 4.3 | 1.0 | 11.9 | 8600 | 19 | 40 | 137 | 5.5 |
| 110BM120 | 1.2 | 12 | 6.0 | 1.1 | 12.4 | 11900 | 19 | 40 | 161 | 7.1 |
| 110BM160 | 1.2 | 16 | 6.5 | 1.3 | 19.0 | 14800 | 19 | 40 | 185 | 10.7 |
| 110BM200 | 1.2 | 20 | 7.0 | 1.7 | 22.0 | 19800 | 19 | 40 | 220 | 11.0 |
|
*NEMA 17 (110mm) |
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K5: 130B Series Dimension (mm)
K6: 130B50 Series Dimension (mm)
130mm series technical specifications
| Model | Step Angle(○) | Holding torque(N.m) | Rated current(A) | Resistance/phase (ohm) | Inductance/phase (mh) | Rotor inertia (g.cm2) | Shaft diameter(mm) | Shaft Length(mm) | Length(mm) | Weight(Kg) |
|---|---|---|---|---|---|---|---|---|---|---|
| 130B23 | 1.2 | 23 | 5.0 | 0.95 | 9.5 | 26800 | 19(K5) | 45 | 170 | 13.7 |
| 130B36 | 1.2 | 36 | 5.0 | 1.30 | 13.1 | 35000 | 19(K5) | 45 | 226 | 18.4 |
| 130B50 | 1.2 | 50 | 5.0 | 1.70 | 18.0 | 45500 | 19(K5) | 45 | 282 | 22.8 |
| 130B50 | 1.2 | 50 | 6.0 | 0.99 | 18.3 | 42500 | 19(K5) | 44 | 271 | 16.5 |
|
*NEMA 52 (130mm) |
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Datasheets & Manuals
57 documents for Stepper Motor. Free PDF, no form to fill in.
-
42AM04 Datasheet Download
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57AM06 Datasheet Download
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60AM21 Datasheet Download
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86AM35 Datasheet Download
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110A12 Datasheet Download
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130A272 Datasheet Download
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42AM02 Datasheet Download
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57AM13 Datasheet Download
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60AM21-Z2 Datasheet Download
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86AM45 Datasheet Download
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110A12-Z Datasheet Download
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130A452 Datasheet Download
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42AM06 Datasheet Download
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57AM13-6.35 Datasheet Download
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60AM30 Datasheet Download
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86AM45-14 Datasheet Download
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110A20 Datasheet Download
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42AM06-Z2 Datasheet Download
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57AM13-Z2 Datasheet Download
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60AM30-Z2 Datasheet Download
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86AM45-Z2 Datasheet Download
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110A20-Z1 Datasheet Download
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42AM08 Datasheet Download
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57AM15 Datasheet Download
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60AM40 Datasheet Download
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86AM65 Datasheet Download
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110A28 Datasheet Download
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42AM08-Z2 Datasheet Download
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57AM23 Datasheet Download
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D57AM21 Datasheet Download
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86AM65-14 Datasheet Download
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110A28-Z1 Datasheet Download
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57AM23-6.35 Datasheet Download
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D57AM30 Datasheet Download
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86AM65-Z2 Datasheet Download
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57AM24 Datasheet Download
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D57AM40 Datasheet Download
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57AM24-6.35 Datasheet Download
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86AM85-14 Datasheet Download
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57AM24-Z2 Datasheet Download
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86AM85-Z2 Datasheet Download
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57AM26 Datasheet Download
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86AM100 Datasheet Download
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57AM30 Datasheet Download
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86AM120 Datasheet Download
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57AM30-Z2 Datasheet Download
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86AM120-Z2 Datasheet Download
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57BM09 Datasheet Download
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86BM20 Datasheet Download
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110BM80 Datasheet Download
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57BM15 Datasheet Download
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86BM40 Datasheet Download
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110BM120 Datasheet Download
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86BM70 Datasheet Download
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110BM160 Datasheet Download
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86BM90 Datasheet Download
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110BM200 Datasheet Download
Why RB Automation
Stepping Motor Supplier in India
Stock, sizing help and after-sales support behind every Stepper Motors we ship.
Stepping motor is the common alternative name for a stepper motor. RB Automation is a stepping motor supplier in India, stocking 20mm to 130mm frames including NEMA 17, NEMA 23 and NEMA 34 sizes, in hybrid and high torque variants. Share your holding torque, step angle and shaft details and our engineers will match a frame.
Industrial Applications of Stepper Motors
RB Automation supplies AC servo drives, servo motors and servo reducers into the machines below, built by OEMs and machine builders in Ahmedabad, across Gujarat and throughout India. Each industry links to the full automation product list for that sector.
SPM Machinery
- Keyway Milling Machine
- PVC Pipe Cutting Machine
- Metal Drilling Machine
- Busbar Bending Machine
- Gold Refinery Machine
- Punching Machine
Pharmaceutical Industry
- Rotary Liquid Filling Machine
- Linear Liquid Filling Machine
- Powder Filling Machine
- Sticker Labeling Machine
- Bottle Sealing Machine
- Capping Machine
Aluminium and Steel Industry
- Laser Marking Machine
- Laser Cutting Machine
- Pipe Cutting Machine
- Drilling Machine
- Keyway Milling Machine
- Sheet Cutting Machine
Railway Industry
- Sleeper Bending Test
- Cube Testing Machine
- Auto Tensioning Machine
- Vibration Control Unit
- Beam Testing Machine
- Pullout Testing Machine
Food Industry
- Cup Cone Filling Machine
- Candy Making Machine
- Pouch Packaging Machine
- Auger Filling Machine
Wood Industry
- CNC Machine
- Engraving Machine
- Automatic Edge Bander Machine
- Auto Panel Saw Machine
Building a machine that is not listed? Send the load, speed and duty and our
engineers will recommend a match
call +91 8511104864 or
email contact@rbautomate.com.
Talk to an engineer
Inquiry Now
Send the model, quantity and what the machine has to do. Our engineers confirm the right Stepper Motor variant and quote it.
- Authorised Schneider Electric partner
- Supply across Gujarat and all India
FAQs
Stepper Motor FAQs
Straight answers to what buyers ask us most about Stepper Motors.
A stepper motor is designed for accurate control of position and speed. For each pulse signal from the controller, the motor, run by its stepper drive, turns through a fixed angle called one step, which makes its motion essentially digital. This suits machines that need repeatable indexing and positioning, such as packaging, labelling, printing and small gantry or pick-and-place axes.
The page lists stepper motors in 20, 28, 35, 39, 42, 57, 86, 110 and 130 mm frame sizes, covering NEMA 8 through NEMA 52. Holding torque ranges from 0.03 Nm on the 20AM003 up to 45 Nm on the 130A45. Popular NEMA 17 and NEMA 23 choices include the 42AM08 at 0.8 Nm and the 57AM23 at 2.3 Nm.
In a code like 57AM23, 57 is the base size in mm, A is the step angle type (A = 1.8 degrees, B = 1.2 degrees, C = 0.72 degrees), M is the M series and 23 is the holding torque, here 2.3 Nm. Optional non-standard codes include D for a double shaft and Z2 for a motor with brake.
Stepper motor price depends on frame size, holding torque, shaft options such as a double shaft or 14 mm shaft, the brake option and order quantity. Share the exact model, for example 57AM23 or 86AM85, and your quantity so RB Automation can quote accurately. Call +91 8511104864 or email contact@rbautomate.com with your requirement.
You can buy stepper motors from RB Automation in Ahmedabad, Gujarat, which supplies machine builders and maintenance teams across India. The team can also help match the motor to a suitable stepper driver and check torque, current and shaft dimensions against your machine. Visit E 206, Ganesh Glory 11, Jagatpur Road, off SG Highway, Jagatpur, Ahmedabad, Gujarat 382470, or use the inquiry form on this page.
Yes. RB Automation handles bulk stepper motor orders for OEM machine builders who need the same frame size and torque rating across planned production runs. Options such as a double shaft (D) or brake (Z2) can be specified in the model code. Send your model list and annual quantity on WhatsApp at +91 9898739737 to get a volume quote.
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