NEMA17 Linear Lead Screw Stepper - 42mm Hybrid Motor with POM Brass Nut Quiet Operation & Low Friction
Our 42mm NEMA 17 hybrid linear stepper motor is built for precise linear movement, with a sturdy TR8 trapezoidal screw (8mm diameter) that works great in many setups—like 3D printers, CNC machines, or automated tools.
The TR8 screw comes in different pitches and leads, so you can pick the right one for your needs. Choose a finer lead for quick, short moves, or a coarser one for more thrust with heavy loads.
We can make the lead screw any length you want—from a small 50mm to over 500mm—so it fits your space perfectly.
You also get to choose between POM nuts (quiet, low-friction, good for lab gear or home projects) and brass nuts (tough, heat-resistant, ideal for industrial use). Both fit the TR8 screw tightly, keeping movement accurate.
It works with common controllers like Arduino and GRBL, and its 42mm size is just right for both DIY projects and industrial setups.
Pick your lead, length, and nut—get a motor that fits your project perfectly.
Design Layout (Unit:mm)
Parameter sheet:
| Model No. | 42BYGH40 |
| Motor type | Linear hybrid stepper motor |
| Motor size | 42mm * 40mm (Width*height) |
| Lead screw type | trapezoidal screw |
| Lead screw length | Adjustable |
| Nut material | POM / brass |
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:
| Lead screw diameter | Screw Lead (mm) | Screw pitch(mm) | Travel per step(mm) |
| TR8 (8mm) | 1 | 1 | 0.005 |
| 2 | 2 | 0.1 |
| 3 | 1.5 | 0.015 |
| 4 | 2 | 0.02 |
| 8 | 2 | 0.04 |
| 10 | 2 | 0.05 |
| 12 | 2 | 0.06 |
| 14 | 2 | 0.07 |
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..
