Two-phase stepper motor 57BHH76-300C-21G

hybrid stepperNEMA 23for robotics

Overview
The 57BHH76-300C-21G is a 57 mm (NEMA 23) 2-phase hybrid stepper motor delivering 1.825 N·m (18.6 kg·cm) holding torque in a 76 mm body. Rated at 3 A/phase, it is intended for precision motion control applications such as CNC machines, robotics and automated assembly systems. Recommended driver: CW542.

Key highlights

• 2-phase, 1.8° step angle — 1.825 N·m (18.6 kg·cm) holding torque
• Rated current: 3 A/phase — 57 mm (NEMA 23) frame
• 76 mm body length, 6.35 mm shaft, 4-lead connection

Electrical specifications
Step angle: 1.8° ±5%
Holding torque: 1.825 N·m (18.6 kg·cm)
Rated current: 3 A/phase
Number of phases: 2
Number of leads: 4
Shaft diameter: 6.35 mm
Frame size: 57 mm (NEMA 23)
Body length: 76 mm
Weight: 1.1 kg
Recommended driver: CW542

Mechanical and performance assets
Mechanical drawing and torque–speed curve available for the 57BH series. CAD files and mounting dimensions can be provided on request to support integration and panel design.

Technical specifications

• Model (series): 57BHH76-300C-21G
• Frame size: 57 mm (NEMA 23)
• Body length: 76 mm
• Step angle: 1.8° ±5%
• Number of phases: 2
• Rated current: 3 A/phase
• Holding torque: 1.825 N·m (18.6 kg·cm)
• Number of leads: 4
• Shaft diameter: 6.35 mm
• Weight: 1.1 kg
• Recommended driver: CW542