NEMA17 42mm 1.8° Linea Stepper Motor High Torque Tr6 or Tr8
This high-torque hybrid linear stepper motor is built to tackle demanding applications, combining the reliability of a NEMA17 frame with a compact 42mm design. Its 1.8° step angle ensures precise linear motion, making it ideal for tasks requiring accurate positioning—from industrial automation to heavy-duty DIY projects.
What sets it apart is its high torque output, delivering the power needed to drive heavy loads or overcome resistance in rigorous workflows. Whether you’re operating conveyor systems, precision lifts, or automated machining tools, this motor maintains consistent performance under pressure.
Choose between Tr6 (6mm diameter) and Tr8 (8mm diameter) trapezoidal lead screws to match your specific needs: Tr6 offers a streamlined profile for space-constrained setups, while Tr8 provides enhanced durability for high-stress applications. Both options ensure smooth, low-friction operation, reducing wear and extending service life.
Perfect for users seeking a balance of power, precision, and flexibility, this linear stepper motor adapts seamlessly to diverse environments—from factory floors to custom robotics. Upgrade your system with a motor that delivers high torque without compromising on accuracy.
Design Layout (Unit:mm)

Electrical Specification:
| | Step Angle | Motor Length | Current/Phase | Resistance/Phase | Inductance/Phase | Holding Torque | Number of leads | Detent Torque | Rotor Inertia |
| (°) | (mm) | (A) | (Ω) | (mH) | (kg.cm) | (No.) | (g.cm) | g.cm2 |
| 42BYGH34-1334 | 0.9 | 34 | 1.33 | 2.1 | 2.5 | 2.2 | 4 | 120 | 34 |
| 42BYGH34-0406 | 0.9 | 34 | 0.4 | 24 | 15 | 1.6 | 6 | 120 | 34 |
| 42BYGH34-0956 | 0.9 | 34 | 0.95 | 4.2 | 2.5 | 1.6 | 6 | 120 | 34 |
| 42BYGH40-0406 | 0.9 | 40 | 0.4 | 30 | 30 | 2.6 | 6 | 150 | 54 |
| 42BYGH40-1684 | 0.9 | 40 | 1.68 | 1.65 | 3.2 | 3.6 | 4 | 150 | 54 |
| 42BYGH40-1206 | 0.9 | 40 | 1.2 | 3 | 2.7 | 2.9 | 6 | 150 | 54 |
| 42BYGH48-0406 | 0.9 | 48 | 0.4 | 30 | 25 | 3.1 | 6 | 260 | 68 |
| 42BYGH48-1684 | 0.9 | 48 | 1.68 | 1.65 | 2.8 | 4.4 | 4 | 260 | 68 |
| 42BYGH48-1206 | 0.9 | 48 | 1.2 | 3.3 | 2.8 | 3.17 | 6 | 260 | 68 |
Screw rod Specification:
| Screw Diameter(mm) | Screw Lead(mm) | Screw Pitch(mm) | Travel per step(mm) | Screw Diameter(mm) | Screw Lead(mm) | Screw Pitch(mm) | Travel per step(mm) |
| Tr5 | 1 | 1 | 0.005 | Tr8 | 8 | 2 | 0.04 |
| | 2 | 1 | 0.01 | | 10 | 2 | 0.05 |
| Tr6 | 2 | 1 | 0.01 | | 12 | 2 | 0.06 |
| | 4 | 1 | 0.02 | | 14 | 2 | 0.07 |
| | 6 | 1 | 0.03 | Tr10 | 2 | 2 | 0.01 |
| | 12 | 2 | 0.06 | | 3 | 1.5 | 0.015 |
| Tr8 | 1 | 1 | 0.005 | | 4 | 2 | 0.02 |
| | 2 | 2 | 0.01 | | 8 | 2 | 0.04 |
| | 3 | 1.5 | 0.015 | | 10 | 2 | 0.05 |
| | 4 | 2 | 0.02 | | 12 | 2 | 0.06 |
Yancheng Weigu Intelligent Technology Co., Ltd.
Yancheng Weigu Intelligent Technology Co., Ltd. is located in Yancheng City,
Jiangsu Province, is an influential micromotor product research and
development, design, production and manufacturing enterprises, with
two production bases in Changzhou and Yancheng. Our products include: hybrid stepper motor, brushless motor,
permanent magnet stepper motor, linear motor, integrated motor,
controller, encoder. Weigu Intelligent Technology has been adhering to the people-oriented,
adhering to the concept of "forge ahead, quality first", with the
support of professional technical team, select raw materials, use
excellent technology, implement strict quality management. In the
future, through continuous investment in innovation and resource
integration, weigu Intelligent will provide customers with more diversified and
personalized products to achieve mutual benefit and win-win
situation..