Two-phase stepper motor 57BHH56-301D-21BD

hybrid stepperNEMA 23for robotics

Overview
The CW-57BHH56-301D-21BD is a NEMA 23 (57 mm) integrated hybrid stepper motor with a built-in IDH57 driver. It delivers 1.0 N·m (100 N·cm) holding torque at 3.0 A/phase and supports DC 12–50 V input. Microstep resolution and current levels are configurable, making the unit suitable for CNC routers, laser engravers and medium-load automation systems.

KEY HIGHLIGHTS

• NEMA 23 (57 mm) integrated stepper with built-in IDH57 driver
• 1.0 N·m (100 N·cm) holding torque
• 3.0 A/phase rated current, DC 12–50 V input
• 1.8° step angle, 200–25,600 ppr microstep configurable
• 4-level current selection via DIP switches (peak 2.1–4.4 A)
• Compact 56 mm body length

Overview — key parameters
Frame size: 57 mm (NEMA 23)
Body length: 56 mm Max
Step angle: 1.8° ± 5%
Holding torque: 1.0 N·m (100 N·cm)
Rated current: 3.0 A/Phase
Driver input voltage: DC 12–50 V
Integrated driver: IDH57

Motor Specifications
Number of phases: 2
Step angle: 1.8° ± 5%
Holding torque: 1.0 N·m (100 N·cm)
Rated voltage: 1.8 VDC
Rated current: 3.0 A/Phase
Phase resistance (20°C): 0.6 Ω ± 10%
Phase inductance (1 kHz): 1.8 mH ± 20%
Insulation resistance: 100 MΩ min (500 VDC)
Insulation class: Class B (130°C)
Ambient temperature: -20°C to +50°C
Ambient humidity: 15% to 95%
Motor weight: Approx. 0.62 kg
Frame size: 57 mm (NEMA 23)
Body length: 56 mm Max
Shaft diameter: φ8 mm
Wire lead: 4-wire, 55 mm length, 5 mm tinned
Wire spec: 22AWG UL1430

Integrated Driver (IDH57) Specifications
Driver model: IDH57
Input voltage: DC 12 V–50 V
Current setting — SW1 off / SW2 off: Peak 2.1 A, RMS 1.5 A
Current setting — SW1 on / SW2 off: Peak 2.8 A, RMS 2.0 A
Current setting — SW1 off / SW2 on: Peak 3.5 A, RMS 2.5 A
Current setting — SW1 on / SW2 on: Peak 4.4 A, RMS 3.1 A
Microstep resolution: 200 / 400 / 800 / 1600 / 3200 / 6400 / 12800 / 25600 ppr (configurable via SW3–SW6)
Control signals: PU+/-, DR+/-, EN+/-, AM+/-
Power connector: XH2.54-2P
Signal connector: PHB2.0-6P
Motor connector: 3.5-4P
Mounting screws: 4-M3×20 GB823

Technical specifications

• Model (series): 57BHH56 series integrated NEMA 23 stepper
• Frame size: 57 mm (NEMA 23)
• Body length: 56 mm (max)
• Step angle: 1.8° (±5%)
• Holding torque: 1.0 N·m (100 N·cm)
• Rated current: 3.0 A/phase
• Rated voltage: 1.8 VDC
• Driver input voltage: DC 12–50 V
• Integrated driver model: IDH57
• Microstep resolution: 200–25,600 ppr (SW3–SW6)
• Current settings via DIP (four levels): peak 2.1 A / 2.8 A / 3.5 A / 4.4 A
• Control signals supported: PU+/-, DR+/-, EN+/-, AM+/-
• Power connector: XH2.54-2P; Signal connector: PHB2.0-6P; Motor connector: 3.5-4P
• Phase resistance: 0.6 Ω ±10% (20°C); Phase inductance: 1.8 mH ±20% (1 kHz)
• Insulation resistance: ≥100 MΩ (500 VDC); Insulation class: B (130°C)
• Operating environment: -20°C to +50°C; Humidity 15%–95%
• Shaft diameter: 8 mm; Wire lead: 4-wire, 55 mm, 5 mm tinned; Wire spec: 22AWG UL1430
• Approx. weight: 0.62 kg