Overview
The JK57HS112-3004-03 is a NEMA 23 hybrid bipolar stepper motor with a D-type shaft and 30.61 kg-cm holding torque. It is designed for CNC machines and other motion-control equipment that requires higher torque than a typical NEMA 17 stepper motor. The motor operates at 4 A per phase and uses open-loop positioning control driven by input pulses.
Each input pulse determines the motor's rotation angle, while pulse frequency controls speed. The motor is suitable for applications requiring repeatable starting, stopping, reversing, and position control. The machined D-type shaft provides a positive drive interface for components such as pulleys and gears.
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Key Features
- NEMA 23 hybrid bipolar stepper motor for CNC machines and motion-control applications
- 30.61 kg-cm holding torque at 4 A per phase
- 1.8° step angle for incremental positioning
- Four-lead design
- D-type shaft for pulley and gear drive components
- Pulse-based control for repeatable starting, stopping, reversing, and positioning
- Open-loop operation without complex feedback circuitry
- Motor speed is proportional to input pulse frequency
Specifications
| Model | JK57HS112-3004-03 |
|---|---|
| Motor type | NEMA 23 hybrid bipolar stepper motor |
| Shaft type | D type |
| Step angle | 1.8° |
| Supply current | 4 A/phase |
| Number of leads | 4 |
| Inductance | 3.6 mH/phase |
| Rotor inertia | 480 g-cm2 |
| Holding torque | 30.61 kg-cm |
| Detent torque | 0.68 kg-cm |
| Step angle accuracy | ±5% |
| Inductance accuracy | ±20% |
| Resistance accuracy | ±10% |
| Shaft diameter | 8 mm |
| Shaft length | 20.6 mm |
| Frame size | 57 x 57 mm |
| Overall dimensions (L x W x H) | 112 x 57 x 57 mm |
| Cable length | 0.3 m (30 cm) |
| Weight | 1690 g |
Applications
Suitable for CNC milling machines, CNC routers, and other equipment requiring higher-torque stepper motor drive and repeatable open-loop position control.
Operating Notes
- Resonance may occur as a result of improper installation.
- Operation at extremely high speeds is not recommended.
- Dimensions and weight may have a ±2% tolerance.
