Stepper MotorLeadshine CM 2-phase · NEMA 34 (86 mm)
86CM85
High-torque 118 mm NEMA 34 stepper (8.5 N·m); use with an 80 V-class drive for usable torque at speed.
Manufacturer datasheet: Leadshine (Shenzhen) · 86CM85 ↗ (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: step angle, insulation class.
How this motor is made
Full manufacturing overview: 86 mm Two-phase Hybrid Stepper Motor (NEMA 34) →- 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 balancing
- 10. Rotor magnetizing
- 11. Final assembly
- 12. End-of-line test
Export certification: Motor for high-voltage drives
- Holding torque
- 8.5 N·m
- Phase current
- 6 A
- Step angle
- 1.8°
- Body length
- 118 mm
Performance curves
Pull-out torque
Estimated curve assuming a 80 V driver with 6 A chopper current. Actual curves depend on the driver and microstepping.
Full specifications
General
- Motor type
- Stepper Motor
- Series
- Leadshine CM 2-phase
- Frame / flange
- NEMA 34 (86 mm)
Rated Values
- Rated voltage
- 3.18 V
Performance
- Holding torque
- 8.5 N·m
- Step angle
- 1.8 °
- Corner speed (est.)
- 300 rpm
Electrical
- Resistance
- 0.53 Ω
- Inductance
- 4.25 mH
- Electrical time constant
- 8.02 ms
Mechanical
- Rotor inertia
- 2,700 g·cm²
- Body length
- 118 mm
- Shaft diameter
- 12.7 mm
- Weight
- 3.8 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 |
|---|---|---|---|---|---|
| ES-DH2306 | Leadshine | Stepper | 150–230 V AC | 6 A / 6 A | Incremental encoder, Closed loop |
| DM805-AI | Leadshine | Stepper | 20–80 V DC | 7 A / 7 A | Open loop |
| EM870S | Leadshine | Stepper | 20–80 V DC | 7 A / 7 A | Open loop |
| EM3E-870E | Leadshine | Stepper | 20–80 V DC | 7 A / 7 A | Open loop |
| CS1-D507S | Leadshine | Stepper | 20–50 V DC | 7 A / 7 A | Incremental encoder, Closed loop |
| DMA860E | Leadshine | Stepper | 30–110 V DC | 7.2 A / 7.2 A | Open loop |