ROTARY STEPPER MOTORS > NEMA 17
Rotary Stepper Motor
NEMA 17 (42mm)
General | |||||||
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Accuracy | Step angle | 1.8°±5% | |||||
Resistance | ±10% / 20°C | ||||||
Inductance | ±20% / 1KHz | ||||||
Insulation class | B | ||||||
Duty type | S1 | ||||||
Dielectrical strength | 500 VAC / 1 KHz / 1 mA / 1 s | ||||||
Insulation resistance | 100 MΩ / 500 VDC | ||||||
Permissible radial load (5MM distance from mounting surface) |
Permissible radial load (10MM distance from mounting surface) |
Permissible radial load (15MM distance from mounting surface) |
Permissible radial load (20MM distance from mounting surface) |
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50N | 40N | 25N | 20N | ||||
Parameter | |||||||
Type | Current (A [RMS]) |
Resistance (Ω) |
Inductance (mH) |
Holding Torque (N·m) |
Rotor Inertia (g·cm2) |
Length (mm) |
Mass (g) |
17H2031 | 1.2 | 1.7 | 2.3 | 0.16 | 23 | 31 | 200 |
17H2034 | 1.2 | 2.1 | 2.7 | 0.25 | 25 | 34 | 230 |
17H2041 | 1.2 | 2.4 | 4.7 | 0.4 | 54 | 41 | 300 |
17H2049 | 2.0 | 1.3 | 2.0 | 0.48 | 77 | 49 | 360 |
17H2061 | 2.0 | 1.7 | 3.6 | 0.72 | 110 | 61 | 500 |
Material | |||||||
End bell | Aluminum alloy | ||||||
Bearing | Deep groove ball bearing | ||||||
Magnet | Sintered NdFeB | ||||||
Shaft | Stainless steel | ||||||
Wiring | UL 3265, 26/24 AWG |
All speed / torque curves below are generated using 8:1 microstepping setting on driver. (Click to enlarge)
Frame Material | Metal | |||||
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No Load Backlash | 1.2° | |||||
Bearings | Ball Bearing | |||||
Ratio | Rated Torque (Kgf-cm) |
Limit Torque (Kgf-cm) |
Stages | Efficiency (%) |
Length (mm) |
Mass (g) |
3.7 | 10 | 30 | 1 | 90 | 30.6 | 260 |
5.2 | ||||||
13.7 | 20 | 60 | 2 | 81 | 41.9 | 350 |
19.2 | ||||||
26.9 | ||||||
50.9 | 50 | 150 | 3 | 73 | 53.2 | 440 |
71.2 | ||||||
99.5 |
Rated Voltage | DC24V ±5% |
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Resistance | 145Ω ±10% |
Output | 5W |
Hold Torque | >0.8 Nm |
Insulation Class | B |
Insulation Resistance | >100MΩ (DC500V) |
Dielectrical Strength | 1 sec by AC1000V |
Armature Attraction Period | 50ms |
Armature Releasing Period | 50ms |
Backlash | 1° |
Rated Life of Brake In Motion | 200 Cycles |
Rated Life of Brake - Non-Moving | 2,000,000 Cycles |
Noise Level | <60db |
Part Number Construction
Please choose the right part number by following the guidelines below.

Part Number Component | Description | ||||||||||||||||||
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1. Motor Size |
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2. Basic Structure | H = Normal P = IP54 W = Enhanced ** For IP65, please contact DINGS' for more information |
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3. Motor Step Angle [°] | 1 = 3° 2 = 1.8° 3 = 1.2° 4 = 0.9° 5 = 0.72° 6 = 0.36° |
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4. Motor Length [mm] | |||||||||||||||||||
5. Rated Current | XXX = Rated current × 100 (A) | ||||||||||||||||||
6. Wiring Number | 3,4,5,6,8 | ||||||||||||||||||
7. Shaft Configuration | A = Single Shaft B = Dual Shaft * Shaft dimension and D-Cut customization, please contact DINGS' |
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8. Wiring Method | L = Flying Lead Wire T = Integrated Connector C = Cable * If customer has special requirement for connector and cable, please inform DINGS' |
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9. Option |
GR = Planetary Gearbox Ready BR = Brake Ready ER = Encoder Ready PG = Planetary Gearbox, Refers to the Part Number of Gearbox with Ratio DG = DINGS' Gearbox FB = Power off brake, NB = Power on Brake EKX = Encoder (X = Encoder Resolution) * DINGS' can customize shafts and covers to be ready to assemble Gearbox, Brake or Encoder by customers, according to customer's requirements by drawing. * DINGS' has standard planetary gearbox options. Please see product details * Power-Off Brake is available for Motor size 28, 35, 42, 57 and 60mm |
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10. Customer Sequence Number | |||||||||||||||||||
Example |
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Widely used across industries for its versatility and efficiency, NEMA 17 stepper motors drive applications such as 3D printing, CNC machines, and robotic arms. Offering high torque and precise control, they enable smooth and accurate movements, enhancing productivity and performance in automation systems.
Encoders available upon request.