NEMA 17 42 mm Rotary Stepper Motor
The Size 17 / 42 mm 2-phase hybrid rotary stepper motor provides precise rotary positioning with up to 0.72 N·m holding torque.
Encoder options, 42 mm planetary gearbox solutions, power-off brake options, and custom windings are available for OEM applications.
Parameters
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| General Specification | Value |
|---|---|
| Step Angle Accuracy | 1.8° ±5% |
| Resistance Accuracy | ±10% @ 20°C |
| Inductance Accuracy | ±20% @ 1 kHz |
| Insulation Class | B |
| Duty Type | S1 |
| Dielectric Strength | 500 VAC / 1 kHz / 1 mA / 1 s |
| Insulation Resistance | 100 MΩ / 500 VDC |
| Permissible Radial Load | 5 mm Distance | 10 mm Distance | 15 mm Distance | 20 mm Distance |
|---|---|---|---|---|
| Load from Mounting Surface | 50 N | 40 N | 25 N | 20 N |
| Type | Current A RMS | Resistance Ω | Inductance mH | Holding Torque N·m | Holding Torque oz-in | Rotor Inertia g·cm² | Length mm | Mass g |
|---|---|---|---|---|---|---|---|---|
| 17H2031 | 1.2 | 1.7 | 2.3 | 0.16 | 22.7 | 23 | 31 | 200 |
| 17H2034 | 1.2 | 2.1 | 2.7 | 0.25 | 35.4 | 25 | 34 | 230 |
| 17H2041 | 1.2 | 2.4 | 4.7 | 0.40 | 56.6 | 54 | 41 | 300 |
| 17H2049 | 2.0 | 1.3 | 2.0 | 0.48 | 68.0 | 77 | 49 | 360 |
| 17H2061 | 2.0 | 1.7 | 3.6 | 0.72 | 102.0 | 110 | 61 | 500 |
| Material | Specification |
|---|---|
| End Bell | Aluminum Alloy |
| Bearing | Deep Groove Ball Bearing |
| Magnet | Sintered NdFeB |
| Shaft | Stainless Steel |
| Wiring | UL 3265, 26/24 AWG |
Dimensional Drawing
Torque Performance Curves
Available Options
Encoder Options
EK1 and EK2 encoder options are available with single-ended or differential output selections across multiple CPR resolutions.
42 mm Planetary Gearbox
Metal housing gearbox options support ratios from 3.7:1 to 99.5:1 with 1, 2, or 3 stage configurations.
Power-Off Brake
Size 17 brake option rated 24 VDC with >0.8 N·m hold torque for holding vertical or safety-sensitive axes when power is removed.
Custom Windings
Custom winding, cabling, shaft, connector, and mechanical options are available for OEM integration.
| Resolution CPR | 100 | 108 | 120 | 125 | 128 | 200 | 250 | 256 | 300 | 360 | 400 | 500 | 1000 | 512 | 720 | 800 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Single-Ended Output | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 |
| Differential Output | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P |
| Resolution CPR | 50 | 100 | 192 | 200 | 250 | 256 | 360 | 400 | 500 | 720 | 900 | 1000 | 1250 | 2000 | 2500 | 4000 | 5000 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Single-Ended Output | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | ||||
| Differential Output | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q |
| Housing Material | Metal | |||||
|---|---|---|---|---|---|---|
| No Load Backlash | 1.2° | |||||
| Bearing | Ball Bearing | |||||
| Ratio | Rated Torque N·m | Limit Torque N·m | Stages | Efficiency | Length mm | Mass g |
| 3.7 | 1 | 3 | 1 | 90% | 30.6 | 260 |
| 5.2 | 1 | 3 | 1 | 90% | 30.6 | 260 |
| 13.7 | 2 | 6 | 2 | 81% | 41.9 | 350 |
| 19.2 | 2 | 6 | 2 | 81% | 41.9 | 350 |
| 26.9 | 2 | 6 | 2 | 81% | 41.9 | 350 |
| 50.9 | 5 | 15 | 3 | 73% | 53.2 | 440 |
| 71.2 | 5 | 15 | 3 | 73% | 53.2 | 440 |
| 99.5 | 5 | 15 | 3 | 73% | 53.2 | 440 |
| Rated Voltage | DC 24 V ±5% |
|---|---|
| Resistance | 145 Ω ±10% |
| Power | 5 W |
| Hold Torque | >0.8 N·m |
| Insulation | B |
| Insulation Resistance | >100 MΩ (DC 500 V) |
| Dielectric Strength | AC 1000 V for 1 sec |
| Retraction Time | 50 ms |
| Release Time | 50 ms |
| Gyration Gap | 1° |
| Emergency Brake Cycle | 200 cycles |
| Lifetime | 500,000 cycles |
| Noise Level | <60 dB |
Customizations
Windings
Custom current, resistance, inductance, and torque-speed performance for your drive requirements.
Shafts
Custom shaft length, flats, D-cuts, keyways, pinions, and mechanical interfaces.
Cables & Connectors
Application-specific leads, connectors, pinouts, cable length, and jacket materials.
Integrated Assemblies
Motor plus encoder, gearbox, brake, or application-specific mounting features.
Part Number Builder
17
Motor frame size: Size 17 / 42 mm.
H
Hybrid rotary stepper motor series.
Length
Available motor lengths include 31, 34, 41, 49, and 61 mm.
Current
Current codes align with motor winding options such as 120 and 200.
Downloads
Catalogs
17H2034-050-4AL
17H2034-050-4BL
17H2041-100-4AL
17H2041-100-4BL
17H2049-150-4AL
17H2049-150-4BL
17H2061-200-4AL
17H2061-200-4BL
Need help selecting or customizing a NEMA 17 rotary stepper motor?
DINGS’ Motion USA can help review holding torque, winding, shaft design, encoder requirements, gearbox integration, brake options, cabling, bearings, clean room needs, and custom mechanical features for your application.