Two-phase stepper motor 57BHM56-070A-28B

hybrid stepperNEMA 23for robotics

Overview
The 57BHM56-070A-28B is a 57 mm (NEMA 23) 2-phase hybrid stepper motor delivering 1.177 N·m (12 kg·cm) holding torque in a 56 mm body. With 0.7 A/phase rated current and a 0.9° step angle, it is suited to precision positioning and motion control applications. Recommended driver: CW215.

Key Highlights

• 2-phase, 0.9° step angle — 12 kg·cm (1.177 N·m) holding torque
• 0.7 A/phase rated current — 57 mm (NEMA 23) frame
• 56 mm body length, 10 mm shaft diameter

Product Datasheet
Model: 57BHM56 (example variant: 57BHM56-070A-28B)

Electrical Specifications
Step angle: 0.9° ± 5%
Holding torque: 1.177 N·m (12 kg·cm)
Rated current: 0.7 A/Phase
No. of phases: 2
No. of leads: 4
Shaft diameter: 10 mm
Frame size: 57 mm (NEMA 23)
Body length: 56 mm
Weight: 0.68 kg
Recommended driver: CW215

Mechanical Drawing
Mechanical drawing available for 57BH Series (57 mm / NEMA 23)

Torque-Speed Curve
Torque-speed curve available for 57BH Series

Technical specifications

• Model: 57BHM56 (variant example shown: 57BHM56-070A-28B)
• Frame size: 57 mm (NEMA 23)
• Body length: 56 mm
• Phase: 2
• Step angle: 0.9° (±5%)
• Holding torque: 1.177 N·m (12 kg·cm)
• Rated current: 0.7 A/Phase
• No. of leads: 4
• Shaft diameter: 10 mm
• Weight: 0.68 kg
• Recommended driver: CW215