NEMA 17 High Precision Through Linear Screw Stepper Motor 42mm DC12-36V 1.8DEG 0.45Nm

This lead screw stepper motor integrates a high-accuracy ACME screw directly with a NEMA 17 hybrid stepper motor, delivering stable linear motion without external coupling. With a 8mm lead screw and 0.45Nm torque, it is widely used as a linear stepper motor, lead screw actuator, and linear drive motor in automation, laboratory equipment, and precision positioning systems.

Key Features

• Direct-drive lead screw stepper design for reduced backlash
• Minimum thrust: 15kg at 300pps
• High torque: 0.45Nm for stable linear actuation
• ACME screw with 8mm lead for precision linear motion
• Compatible with linear actuator systems and compact motion platforms
• Suitable for automation, CNC mini-slides, inspection systems, and semiconductor tools

Technical Specifications

Electrical & Mechanical Parameters
Step Angle	1.8° ±5%
Number of Phase	2
Rated Voltage	3.06 VDC
Phase Current	1.7 A
Phase Resistance	1.8Ω ±10%
Phase Inductance	3.2 mH ±20%
Static Torque	0.45 Nm
Insulation Class	Class B
Insulation Resistance	≥100MΩ (500V DC)
Ambient Temperature	−20°C ~ +50°C
Ambient Humidity	15%–95%
Motor Weight	Approx. 0.42kg
Use Voltage	DC 12–36V
Recommended Driver	2D4020A

 

Lead Screw Specification

Lead Screw Data
Screw Diameter	8mm
Screw Lead	8mm
Screw Step	0.04mm
Screw Length	Custom (Standard: 200mm Section)
Drive Mode	POM Nut Linear Drive

 

Dimensions

Motor Dimension
Motor Size	42 × 42 mm (NEMA 17)
Body Length	47mm
Front Shaft	Tr8 × 200mm
Mounting Hole	4 × M3

 

Excitation Sequence & Rotation Direction

STEP	A+	B+	A−	B−
1	+	+	−	−
2	−	+	+	−
3	−	−	+	+
4	+	−	−	+

 

FAQ

Ball Screw vs Lead Screw — Which Is Better?

Ball screws offer higher efficiency and lower friction, ideal for high-speed CNC systems. Lead screws are quieter, lower cost, and self-locking, making them perfect for compact linear stepper motor applications.

What Is a Stepper Motor With Lead Screw?

It is a hybrid stepper motor with an integrated ACME screw. Rotation converts directly into linear motion, eliminating couplings and reducing backlash.

Why Some Call It a Screw Stepper Motor and Others Call It a Linear Stepper Motor?

Both terms refer to the same device. “Screw stepper motor” describes the structure, while “linear stepper motor” describes the function—producing controlled linear motion.

Download Datasheet

Download the full specification sheet for detailed parameters, wiring guide, and performance curves.

📄 Download PDF Datasheet