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:

Model No.	Step Angle	Motor Length	Current/Phase	Resistance/Phase	Inductance/Phase	Holding Torque	Number of leads	Detent Torque	Rotor Inertia
Model No.	(°)	(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

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