Description
The 42HB34F08AB is a Nema 17 stepper motor designed for precision control in applications requiring accurate positioning and reliable performance. This 2-phase bipolar motor features a standard 1.8° step angle (200 steps per revolution) and is suitable for use in 3D printers, CNC machines, laser engravers, and robotics. The motor's compact 42mm frame and hybrid stepper design offer an effective balance of torque, speed, and positional accuracy for demanding motion control applications. Each phase draws 0.8A and produces a holding torque of approximately 0.8Nm (220 N.cm), providing sufficient power for medium-load tasks
Key Features
- Nema 17 Standard Frame: 42mm × 42mm footprint with 31.8mm mounting hole spacing for easy integration
- Bipolar Stepper Motor: 2-phase, 4-wire configuration enabling efficient torque delivery
- 1.8° Step Angle: Provides 200 steps per full rotation for smooth and precise motion control
- Holding Torque: 0.8Nm (approx. 113 oz-in) — suitable for moderate-load applications
- 4-Wire Connection: Compatible with popular stepper drivers such as A4988, DRV8825, and TMC2208
- Compact and Durable: 34mm motor body length with a 5mm diameter shaft
- Wide Temperature Range: Operates reliably from -20°C to +50°C
Specifications
| Parameter | Specification |
|---|---|
| Frame Size | Nema 17 (42mm × 42mm) |
| Model | 42HB34F08AB |
| Step Angle | 1.8° ±5% |
| Steps per Revolution | 200 |
| Holding Torque | 0.8Nm (approx. 113 oz-in / 22 N.cm) |
| Rated Current per Phase | 0.8A (Manufacturer datasheet) / 1.33A (Distributor listing) |
| Phase Resistance | 6.2Ω (Manufacturer datasheet) / 2.2Ω (Distributor listing) |
| Phase Inductance | 10mH (Manufacturer datasheet) / 2.5mH (Distributor listing) |
| Number of Phases | 2 |
| Shaft Diameter | 5mm |
| Shaft Length | 34mm |
| Motor Length | 34mm |
| Mounting Hole Spacing | 31.8mm (1.220") |
| Weight | Approximately 400g |
| Operating Temperature | -20°C to +50°C |
Application
- 3D Printers – Extruder and axis movement control
- CNC Machines – Precision positioning of cutting tools
- Laser Engravers – Accurate head positioning for engraving and cutting
- Robotics – Joint actuation and precise motion control
- Camera Platforms – Smooth pan and tilt mechanisms
- Positioning Systems – Automated stages and linear actuators.
Datasheet:
For detailed technical specifications, refer to the 42HB34F-08AB Datasheet.