Stepper MotorRtelligent AM 2-phase · NEMA 17 (42 mm)
42AM04
40 mm-long NEMA 17 hybrid stepper from Shenzhen maker Rtelligent — the standard size for 3D printers, small linear modules and dispensers.
Manufacturer datasheet: Rtelligent (Shenzhen) · 42AM04 ↗ (checked 2026-10-17)Maker profile & contacts →
Figures are copied from the maker’s published datasheet; curves are calculated from them. Confirm with the manufacturer before ordering. Not stated on the datasheet, estimated from it: IP rating.
How this motor is made
Full manufacturing overview: 42 mm Two-phase Hybrid Stepper Motor (NEMA 17) →- 1. Lamination stamping & interlocking
- 2. Stator insulation
- 3. Winding
- 4. Lead termination
- 5. Stator in-process test
- 6. Impregnation & curing
- 7. Rotor assembly
- 8. Rotor OD grinding
- 9. Rotor magnetizing
- 10. Final assembly
- 11. End-of-line test
Export certification: Low-voltage motor without electronics
- Holding torque
- 0.4 N·m
- Phase current
- 1.5 A
- Step angle
- 1.8°
- Body length
- 40 mm
Performance curves
Pull-out torque
Estimated curve assuming a 24 V driver with 1.5 A chopper current. Actual curves depend on the driver and microstepping.
Full specifications
General
- Motor type
- Stepper Motor
- Series
- Rtelligent AM 2-phase
- Frame / flange
- NEMA 17 (42 mm)
Rated Values
- Rated voltage
- 3.9 V
- Rated current
- 1.5 A
Performance
- Holding torque
- 0.4 N·m
- Step angle
- 1.8 °
- Corner speed (est.)
- 300 rpm
Electrical
- Resistance
- 2.6 Ω
- Inductance
- 5.1 mH
- Electrical time constant
- 1.96 ms
Mechanical
- Rotor inertia
- 57 g·cm²
- Body length
- 40 mm
- Shaft diameter
- 5 mm
- Weight
- 0.289 kg
- Protection
- IP40
Compatible drivers
All drivers →Drivers whose supply voltage covers this motor and whose continuous current is at least its rated current; drivers from the same maker first. Confirm Hall/encoder type and settings with the maker.
| Model | Maker | Motor type | Supply | Cont. / peak current | Feedback |
|---|---|---|---|---|---|
| R42 | Rtelligent | Stepper | 18–48 V DC | 1.6 A / 2.2 A | Open loop |
| 5R60 | Rtelligent | Stepper | 18–50 V DC | 3.5 A | Open loop |
| R60 | Rtelligent | Stepper | 18–50 V DC | 4 A / 5.6 A | Open loop |
| 3R60 | Rtelligent | Stepper | 18–50 V DC | 5.7 A / 8 A | Open loop |
| R86 | Rtelligent | Stepper | 24–100 V DC | 6 A / 7.2 A | Open loop |
| 3R86 | Rtelligent | Stepper | 24–100 V DC | 6 A / 7.2 A | Open loop |