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Stepper Motor 42BYG
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$38.71
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The 42BYG is a NEMA 17 bipolar stepper motor with a shaft-reversed design, commonly used in 3D printers, CNC machines, and DIY motion-control projects. With ...
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The 42BYG is a NEMA 17 bipolar stepper motor with a shaft-reversed design, commonly used in 3D printers, CNC machines, and DIY motion-control projects. With a 1.8° step angle and 40 N·cm holding torque, it provides reliable, precise positioning.
The motor comes with a 70 cm 4-lead wire (AWG26 UL1007) for easy connection to stepper drivers like the A4988 or DRV8825.
Specifications
- Type: NEMA 17 bipolar, 2-phase
- Step Angle: 1.8° ± 5%
- Voltage: 4.2 V DC
- Current: 1.2 A per phase
- Resistance: 8.8 Ω ± 10% per phase
- Inductance: 6.0 mH ± 20% (1 kHz, 1 V rms)
- Holding Torque: 40 N·cm min
- Detent Torque: 2.6 N·cm max
- Rotor Inertia: 57 g·cm²
- Insulation Resistance: 100 MΩ min (500 V DC)
- Insulation Class: B (130 °C)
- Faceplate: 43.2 × 43.2 mm (1.7 × 1.7″)
- Lead Wire: 70 cm, 4-lead, AWG26 UL1007
Ideal For
- 3D printers and CNC machines
- Robotics and automation projects
- Camera sliders and pan-tilt rigs
Jargon buster
Plain-language definitions for the technical terms used above.
- RMS
- RMS is a way of describing the effective level of an AC signal, such as an audio output voltage. It helps compare audio output levels more meaningfully than a peak voltage number.
- Torque
- A twisting force that causes something to rotate, usually measured in newton-metres or kilogram-centimetres. It matters when choosing motors, servos, gears, and tools because higher torque is needed to lift heavier loads, turn larger wheels, or move mechanisms without stalling.
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