Stepper motor 42BHH48-140A-07EH

hybrid steppertwo-phase stepper4.8 V

Product Overview
The CW-42BHH48-140A-07EH is a compact NEMA 17 (42 mm) integrated hybrid stepper motor with a built-in IRS42E driver. It delivers 0.608 N·m holding torque at 1.4 A/phase and integrates motor and driver for simplified wiring and compact installation, suitable for 3D printers, small CNC machines and compact automation equipment.

Key Highlights

• NEMA 17 (42 mm) integrated stepper with built-in IRS42E driver
• 0.608 N·m (6.2 kg·cm) holding torque
• 1.4 A/phase rated current, 4.8 VDC rated voltage
• 1.8° step angle (200 steps/rev)
• Compact 48 mm body length
• Simplified wiring — motor and driver in one unit

Overview (table)
Frame Size: 42 mm (NEMA 17)
Body Length: 48 mm Max
Step Angle: 1.8° ± 5%
Holding Torque: 0.608 N·m (6.2 kg·cm)
Rated Current: 1.4 A/Phase
Rated Voltage: 4.8 VDC
Integrated Driver: IRS42E

Motor Specifications (table)
Number of Phases: 2
Step Angle: 1.8° ± 5%
Holding Torque: 0.608 N·m (6.2 kg·cm)
Rated Voltage: 4.8 VDC
Rated Current: 1.4 A/Phase
Phase Resistance (20°C): 3.4 Ω ± 10%
Phase Inductance (1kHz): 7.5 mH ± 20%
Rotor Inertia: 76 g·cm²
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%
Frame Size: 42 mm (NEMA 17)
Body Length: 48 mm Max
Shaft Diameter: φ5 mm
Wire Lead: 4-wire, 55 mm length, 5 mm tinned
Wire Spec: 24AWG UL1430

Integrated Driver (IRS42E)
Driver Model: IRS42E
Mounting: 2-M3×40 GB823 screws (diagonal)
Heat Shrink Tube: φ4×45 mm
Mounting Screws (attached): 2-M3×59.5 GB823
Driver Label: Attached to driver body

Mechanical Drawing
Mechanical drawing available for 42BHH Series (42 mm NEMA 17, Integrated Driver).

Technical specifications

• Model / Series: 42BHH48
• Phase: 2
• Step Angle: 1.8° ± 5% (200 steps/rev)
• Holding Torque: 0.608 N·m (6.2 kg·cm)
• Rated Current: 1.4 A/Phase
• Rated Voltage: 4.8 VDC
• Phase Resistance (20°C): 3.4 Ω ± 10%
• Phase Inductance (1kHz): 7.5 mH ± 20%
• Rotor Inertia: 76 g·cm²
• Insulation Resistance: ≥100 MΩ (500 VDC)
• Insulation Class: Class B (130°C)
• Ambient Temperature Range: -20°C to +50°C
• Ambient Humidity Range: 15% to 95%
• Frame Size: 42 mm (NEMA 17)
• Body Length: 48 mm Max
• Shaft Diameter: φ5 mm
• Wire Lead: 4-wire, 55 mm length, 5 mm tinned
• Wire Spec: 24AWG UL1430
• Integrated Driver: IRS42E (motor and driver combined)
• Mounting: diagonal 2-M3×40 (GB823) screws; driver mounting screws 2-M3×59.5 (GB823)