Nema 42 3 Phase Stepper Motor & Driver Kit 12/16/20Nm 1.2° 110 x 110mm Keyway Shaft
Nema 42 110mm 3 Phase Stepper Motor 12/16/20Nm 1.2° keyway Shaft For Heavy-Duty CNC Milling Machine
It is a 3-phase stepper motor with phase memory function (resumes position after power recovery). Cast iron body with a 19mm keyed shaft.
Specifications:
Phase:3-Phase
Step Angle: 1.2°
Holding Torque: 12/16/20N.m
Body Length: 160/185/220mm
Rated Current: 6A
Number of Leads: 3
Shaft Diameter:19mm (with keyway)
Phase Resistance: 1.5Ω
Phase Inductance: 20mH
Rotor Inertia: 19600 g·cm²;
EC3822 Stepper Motor Driver:
3-phase stepper motor driver based on DSP control.
Input voltage range: AC 80–240 V, single power input.
Provides 16 microstepping angle settings and 16 current settings.
Maximum input pulse response frequency: 200 kpps.
Reduces coil current to 50% of the set value when step pulses stop for more than 1.5 s.
Optically isolated control signal input and output.
Used for pairing with 3-phase 86mm/110 mm open-loop stepper motors with phase current < 6 A.
Supports direct connection to AC 110–220 V mains without an external switching power supply.
Metal housing structure.
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| Physical Specification | |
|---|---|
| Keyway Length | Keyway |
| Body Length(mm) | 160 / 185 / 220 |
| Frame Size(mm) | 110 |
| No. of Lead | 3 |
| Shaft Diameter(mm) | 19 |
| Shaft Length(mm) | 25 |
| Shaft Type | Keyway |
| Single Shaft/Dual Shaft | Single Shaft |
| Electrical Specification | |
| Rated Current (A) | 6 |
| Step Angle(°) | 1.2 |
| No. of Phase | 3 |
| Product Type | Hybrid Stepper Motor |
| Open-loop/Closed-loop | Closed-loop |







