Linear drive motor

SEA MOTION linear drive motor is a star core product in our motion control supply chain, serving as a cost-effective and high-performance alternative to expensive imported linear motors. Different from traditional screw transmission structures, our products directly outputs linear motion with zero transmission backlash, zero mechanical wear, ultra-high positioning accuracy and ultra-fast acceleration and deceleration performance, perfectly meeting the stringent requirements of high-end precision motion control scenarios. Adhering to long-term R&D investment and technical innovation, we cooperate with professional academic institutions to continuously optimize product magnetic circuit and structural design.

In 2025, our linear drive motor successfully entered the Vietnamese market, realizing large-scale replacement of well-known foreign brands.

In early 2026, our brand-new clean workshop was officially put into use, doubling overall production capacity and greatly improving product consistency and delivery efficiency.

Supported by complete after-sales service and professional technical support systems, our products undergo strict quality inspection procedures. With outstanding comprehensive performance and reliable supply capacity, SEA MOTION, as a leading China linear drive motor manufacturer, has won wide recognition from global industrial customers.

SEA MOTION linear motors are mainly divided into four series:

1. SMJ series flat magnetic linear drive motor with iron core

2. SMUC series intermediate magnetic linear drive motor with iron core

3. SMU-H series bilateral magnetic linear drive motor with iron core

4. SMU series bilateral magnetic linear drive motor without iron core

Also available is the semi-closed SMJE series.

Fully enclosed SMJD

Based on linear drive motors, we have also developed and produced various equipment, such as high-precision laser cutting equipment and visual recognition and inspection equipment.

Product Parameter

SMU21 series linear drive motor without iron core parameter

Product feature And Application

SEA MOTION linear drive motor features core advantages of high precision, high dynamic response, long service life and zero maintenance, breaking through the performance limitations of traditional transmission equipment. It achieves nanoscale to micron-level precise positioning, supports ultra-high acceleration of 2g+ and rapid moving speed up to 70m/min, with stable and jitter-free long-term operation and no mechanical wear loss. These superior performances enable wide coverage of high-end industrial fields. In semiconductor and display panel industries, it supports lithography machine worktables, wafer transmission and OLED precision lamination with clean and high-precision performance. It empowers ultra-precision machining of CNC machine tools and aerospace parts by eliminating reverse clearance. In new energy and photovoltaic industries, it realizes high-speed and high-precision stacking and assembly. It also serves silent and stable motion control for medical imaging and surgical robots, high-efficiency production of 3C automation, low-noise operation of rail transit, intelligent logistics conveying, as well as extreme environment testing and precision measurement for aerospace and scientific research scenarios.

Production size and F-V curve

SMU21 series linear drive motor size / mm

SMU21 mover size

SMU21 stator size

SMU21 F-V curve