57BM15
3-phase hybrid stepper (1.2° step): smoother and quieter than 2-phase at low speed, with better torque at speed.
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: 57 mm Two-phase Hybrid Stepper Motor (NEMA 23) →3-phase version: 6-pole stator winding and 1.2° step; laminations, rotor and assembly follow the 57 mm 2-phase reference.
- 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
- 1.5 N·m
- Phase current
- 3.5 A
- Step angle
- 1.2°
- Body length
- 78 mm
Performance curves
Estimated curve assuming a 48 V driver with 3.5 A chopper current. Actual curves depend on the driver and microstepping.
Full specifications
General
- Motor type
- Stepper Motor
- Series
- Rtelligent BM 3-phase
- Frame / flange
- NEMA 23 (57 mm)
Rated Values
- Rated voltage
- 2.17 V
- Rated current
- 3.5 A
Performance
- Holding torque
- 1.5 N·m
- Step angle
- 1.2 °
- Corner speed (est.)
- 437 rpm
Electrical
- Resistance
- 0.62 Ω
- Inductance
- 2 mH
- Electrical time constant
- 3.23 ms
Mechanical
- Rotor inertia
- 480 g·cm²
- Body length
- 78 mm
- Shaft diameter
- 8 mm
- Weight
- 1.1 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 |
|---|---|---|---|---|---|
| 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 |
| T60S | Rtelligent | Stepper | 18–50 V DC | 6 A | Incremental encoder, Closed loop |