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Stepper Motors > Stepper Motor Only
Stepper Motors (Motor Only)
Absolute Encoder Stepper Motors
αSTEP AZ Series Stepper Motors with Mechanical Absolute Encoder
- 0.79 in. (20 mm) up to 3.54 in. (90 mm)
- 42 oz-in (0.3 N·m) up to 752 lb-in (85 N·m)
- 0.36° and Geared
Closed Loop Stepper Motors
αSTEP AR Series Closed Loop Stepper Motors
- 1.10 in. (28 mm) up to 3.54 in. (90 mm)
- 42 oz-in (0.3 N·m) up to 442 lb-in (50 N·m)
- 0.36° and Geared
2-Phase Bipolar Stepper Motors
PKP Series 2-Phase Bipolar Stepper Motors
- 0.79 in. (20 mm) up to 3.54 in. (90 mm)
- 2.8 oz-in (0.02 N·m) up to 84 lb-in (9.5 N·m)
- 0.9°, 1.8° and Geared
2-Phase Unipolar Stepper Motors
PKP Series 2-Phase Unipolar Stepper Motors
- 0.79 in. (20 mm) up to 3.54 in. (90 mm)
- 2.8 oz-in (0.02 N·m) up to 64 lb-in (7.3 N·m)
- 0.9°, 1.8° and Geared
5-Phase Stepper Motors (AC Input)
RKII Series 5-Phase Stepper Motor s (AC Input)
- 1.65 in. (42 mm) up to 3.54 in. (90 mm)
- 19.8 oz-in (0.14 N·m) up to 460 lb-in (52 N·m)
- 0.72° and Geared
5-Phase Stepper Motors (DC Input)
PKP Series 5-Phase Stepper Motors (DC Input)
- 1.10 in. (28 mm) up to 2.22/2.36 in. (56.4/60 mm)
- 7.3 oz-in (0.052 N·m) up to 290 oz-in (2.1 N·m)
- 0.36°, 0.72° and Geared
Stepper Motor Quick Select
αSTEP AZ Series Product Family
Stepper Motor Videos
Stepper Motor Technical Articles
- Hybrid Stepper Motors and AlphaStep Hybrid Control Systems
- Eliminating External Sensors with the AlphaStep AZ Series Absolute Encoder Stepper Motors
- Everything You Need to Know about Stepper Motors
- 2-Phase vs. 5-Phase Stepper Motors
- Overcoming Rotation Vibration
- Development of Battery-Free, Multi-Rotation Absolute Mechanical Encoder
- Speed-Torque Curves of Stepper Motors
- Stepper Motor Lower Loss Technology Development
- IP Ratings - Degree of Protection
- Motor Sizing Calculations
Stepper Motor Comparison
Product Series |
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Features |
Closed Loop, |
Closed Loop, |
High Torque, |
High Torque, |
High-Efficiency |
High Torque, |
Basic Step Angle |
0.36° |
0.36° |
1.8°, 0.9° |
1.8°, 0.9° |
0.72° |
0.72°, 0.36° |
Driver Required |
AZ Series |
AR Series |
CVD Series Bipolar |
CMD Series Unipolar |
RKII Series |
CVD Series 5-Phase |
Driver Power Input |
AC or DC |
AC or DC |
DC |
DC |
AC |
DC |
Frame Sizes |
0.79 in. (20 mm) |
1.10 in. (28 mm) |
0.79 in. (20 mm) |
0.79 in. (20 mm) |
1.65 in. (42 mm) |
1.10 in. (28 mm) |
Available Options |
Geared Type |
Geared Type |
Geared Type |
Geared Type |
Geared Type |
Geared Type |
Max. Holding Torque |
2.8 oz-in up to 752 lb-in |
42 oz-in up to 442 lb-in |
2.8 oz-in up to 1,062 lb-in |
2.8 oz-in up to 64 lb-in |
19.8 oz-in up to 460 lb-in |
7.3 oz-in up to 53 lb-in |
0.02 N·m up to 85 N·m |
0.3 N·m up to 50 N·m |
0.02 N·m up to 120 N·m |
0.02 N·m up to 7.3 N·m |
0.14 N·m up to 52 N·m |
0.052 N·m up to 6 N·m |
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