NEMA 17 12V Linear Motor with Lead Screw | 0.28Nm 0.4A Stepper Motor Linear Actuator

NEMA 17 Linear Motor – Precision Lead Screw Stepper Motor

This linear motor integrates a NEMA 17 stepper with a precision bearing lead screw,
offering smooth, repeatable linear motion without additional transmission components.
It is an ideal stepper motor linear actuator for compact automation systems requiring accurate positioning.

Key Features of the Linear Drive Motor

• 12V DC linear drive motor with low power consumption
• 0.28Nm static holding torque for reliable thrust output
• 0.4A phase current, optimized for compact linear power supplies
• POM anti-backlash nut minimizes axial clearance and vibration
• Customizable lead screw length and stroke available
• Integrated bearing support for improved axial stability

Mechanical Structure & Lead Screw Design

The actuator uses a precision Tr8×8 lead screw combined with a POM material anti-backlash nut.
This structure significantly reduces reverse clearance and ensures stable performance in continuous linear motion.
The lead screw stepper motor design eliminates couplings and belts, improving efficiency and accuracy.

Electrical Specifications

Parameter	Specification
Motor Frame Size	NEMA 17 (42mm)
Rated Voltage	12 VDC
Phase Current	0.4 A
Phase Resistance	30 Ω ±10% (20℃)
Phase Inductance	37 mH ±20%
Holding Torque	0.28 Nm
Step Angle	1.8° ±5%
Number of Phases	2

Environmental & Insulation Data

Item	Value
Insulation Class	Class B
Insulation Resistance	≥100MΩ (500V DC)
Operating Temperature	-20℃ to +50℃
Ambient Humidity	15% – 95%
Motor Weight	Approx. 0.2 kg

Subdivision (Microstepping) Settings

Microstep	Resolution	Application
Full Step	1.8°	High torque applications
Half Step	0.9°	General automation
1/8 Step	0.225°	Smooth linear motion
1/16 Step	0.1125°	High precision positioning

Encoder Option

Type	Description
Incremental Encoder	Optional, improves positioning accuracy
Closed-loop Control	Reduces missed steps under load

Wiring Diagram

Wire Color	Function
Black	A+
Green	A-
Red	B+
Blue	B-

Typical Applications

• 12V linear actuator systems
• Medical and laboratory equipment
• CNC and engraving machines
• Automation actuador linear modules
• Precision positioning platforms

Download Datasheet

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

📄 Download PDF Datasheet

This stepper motor belongs to our
Stepper Motor series, designed for industrial automation applications.

Related Technical Articles

To better understand how lead screw systems work in linear motion applications,
the following technical articles provide in-depth guidance and design insights.

• 
  Lead Screw Stepping Motor Explained – Design, Advantages, and Applications
  – A comprehensive overview of lead screw stepper motors and how they function as
  stepper motor linear actuators.
• 
  How to Choose a Lead Screw for Stepper Motor Linear Actuators
  – Learn how lead, pitch, and nut material affect speed, thrust, and positioning accuracy.
• 
  Stepper Motor Linear Actuator Design Guide
  – Practical design considerations for building reliable linear drive motor systems.