Two-phase stepper motor 57BHM65-150A-21A

hybrid stepper24 VNEMA 23

Product Description
The 57BHM65-150A-21A is a 57 mm (NEMA 23) 2-phase hybrid stepper motor delivering 0.883 N·m (9 kg·cm) holding torque in a 65 mm body. Rated 1.5 A per phase, it provides precise open-loop positioning for automation and motion control systems. Recommended driver: CW542.

Key Highlights

• 2-phase, 0.9° step angle — 0.883 N·m (9 kg·cm) holding torque
• Rated current 1.5 A/phase — 57 mm (NEMA 23) frame
• Compact 65 mm body length with 8 mm shaft

Summary
Phases: 2
Step angle: 0.9°
Holding torque: 0.883 N·m
Current/phase: 1.5 A
Shaft diameter: 8 mm
No. of leads: 4

Electrical Specifications
Step angle: 0.9° ±5%
Holding torque: 0.883 N·m (9 kg·cm)
Rated current: 1.5 A/phase
Number of phases: 2
Number of leads: 4
Shaft diameter: 8 mm
Frame size: 57 mm (NEMA 23)
Body length: 65 mm
Weight: 0.72 kg
Recommended driver: CW542

Mechanical & Performance
Body length: 65 mm (57BH series mechanical drawing available)
Shaft diameter: 8 mm
Weight: 0.72 kg
Torque–speed characteristics: torque–speed curve available for 57BH series

Technical Characteristics

• Model family: 57BH / 57BHM65
• Frame size: 57 mm (NEMA 23)
• Body length: 65 mm
• Step angle: 0.9° (±5%)
• Number of phases: 2
• Rated current: 1.5 A per phase
• Holding torque: 0.883 N·m (9 kg·cm)
• Shaft diameter: 8 mm
• Number of leads: 4
• Weight: 0.72 kg
• Recommended driver: CW542