Motor 57BYGH311 technical information, including its features and specifications is available in this post.
This product features 4-phase Hybrid Stepper Motor functions.
The component is manufactured by MERCURY MOTOR.
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Description
The 57BYGH311 is a 4-phase hybrid stepper motor designed for precision motion control applications. It combines the characteristics of permanent magnet and variable reluctance motors, delivering high torque, accurate positioning, and stable performance. With a holding torque of 15 kg·cm and relatively low inductance, it is suitable for CNC systems, robotics, and automation equipment.
Features
- Hybrid stepper motor structure for high precision and torque
- 4-phase configuration for smooth stepping operation
- High holding torque (15 kg·cm)
- Low phase resistance (1.2Ω) for efficient current drive
- Moderate inductance (2.2mH) for dynamic response
- Good insulation resistance (≥100MΩ @ 500V DC)
- High dielectric strength (500V AC, 1 minute)
- Wide operating temperature range (-20°C to +50°C)
Pinout
Electrical Characteristics (Ta = 25 °C)
| Parameter | Symbol | Value | Unit |
| Number of Phases | – | 4 | – |
| Rated Voltage | V | 3.6 | V |
| Rated Current | I | 3 | A |
| Phase Resistance | R | 1.2 | Ω |
| Inductance | L | 2.2 | mH |
| Holding Torque | TH | 15 | kg·cm |
| Weight | – | 1.1 | kg |
Design Notes
- Requires a current-controlled stepper driver (e.g., chopper driver)
- Low resistance and high current demand proper thermal design
- Microstepping drivers improve smoothness and reduce vibration
- Inductance affects high-speed torque performance
- Proper wiring of phases is critical to avoid mis-stepping
Typical Circuit Usage
- Driven by stepper motor driver ICs (e.g., A4988, DRV8825)
- Controlled via MCU or motion controller with step/dir signals
- Used in closed-loop or open-loop positioning systems
How to Choose This Part
- Select when moderate torque (~15 kg·cm) is required
- Suitable for medium-load precision positioning systems
- Ideal for CNC, 3D printers, and automation equipment
- Choose when 3A current driving capability is available
- Best for applications needing stable holding torque
Applications
- CNC machines
- 3D printers
- Robotics and automation systems
- Industrial positioning systems
- Medical and laboratory equipment
Alternative / Equivalent Products
- 57BYGH76
- NEMA23 stepper motors
- 42BYGH series (lower torque alternatives)
- 86BYGH series (higher torque alternatives)
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For more details, please refer to the file.
57BYGH311 Technical Datasheet (PDF)
