SLW Motor supplies the rotary drive unit — motor, gearbox, and screw-output shaft — that goes inside a linear actuator, not a finished actuator assembly. Engineers building actuators for medical devices, automation, robotics, and precision equipment spec this drivetrain and pair it with their own screw/nut and housing.
A linear actuator motor is the motor and gearbox drivetrain that converts rotary output into linear push/pull force once mated to a lead screw or ball screw. It is not the complete actuator, because the finished assembly adds the screw, nut, housing, and stroke limits around this drive unit.
For cost-sensitive strokes, Brushed DC Motors keep the drive simple and affordable.
Choose Coreless DC Motors for smooth, low-speed precision, or Brushless DC Motors for higher duty-cycle strokes.
Match torque and speed to the screw with Planetary Gear Motors or Spur Gear Motors.
Worm Gear Motors hold position without power through self-locking, useful where an actuator must stay put on power loss.
Two 12mm catalog units ship with an M4 threaded output shaft, so the gearbox drives a nut directly without a separate rotary-to-linear coupling — the shortest path to a micro linear actuator.
Screw pitch, nut material, and stroke length are set on the actuator side; SLW confirms the gearbox ratio against your required force and travel speed.
| Model | Motor | Rated Voltage | Ratios | Output (rated) | Feedback |
|---|---|---|---|---|---|
| 12mm micro brushed motor with M4 screw output shaft gearbox | 12mm brushed DC | 12V | 18:1–244:1+ | 66–900 rpm, 16–220 g·cm; stall to 1,493 g·cm | — |
| 12mm brushed motor with M4 screw output shaft gearbox and encoder | 12mm brushed DC | 12V | 18:1–244:1+ | Same ratio ladder | Integrated encoder for closed-loop stroke control |
For space-constrained actuators — infusion pumps, camera-focus sliders, small robotic joints — Φ12mm and Φ20mm envelopes are common starting points. Sample data from our Φ20mm 180 micro brushed motor, before a gearbox is added:
| Model | Voltage | No-Load Speed | Max-Eff. Speed | Max Output Torque |
|---|---|---|---|---|
| SLW-FF180-17140 | 6V | 7074 rpm | 5869 rpm | 22.5 g·cm |
| SLW-FF180-11310 | 24V | 11562 rpm | 9759 rpm | 36.7 g·cm |
Φ12mm N20 (3–6V) and N30 (3–24V) motors serve tighter envelopes at lower torque and speed, while the 12mm N50 high torque gear motor covers pushes needing more force in the same diameter.
Torque, speed, voltage, and power are tunable per project, so each drivetrain can be matched to the motion profile an application needs.
Worm-geared variants such as the 12mm coreless worm gear motor add self-locking hold for actuators that must stay put on power loss.
Explore Medical Equipment ApplicationsHousings and gears are available in brass, stainless steel, powder-metallurgy alloys, or engineering plastics to suit the duty and environment.
Custom output shaft configurations, encoder integration, PCB soldering, and wire harness assembly are offered on request.
Explore Industrial Machinery ApplicationsThese drivetrains serve medical devices, automation, smart devices, robotics, and precision equipment builders.
Builders across 30+ countries rely on these drivetrains for their linear motion designs.
Explore Smart Device ApplicationsTorque, speed, voltage, and power are tunable per project, and worm-geared variants add self-locking hold where needed.
Custom shaft, encoder, PCB, and harness options let robotics builders adapt the drivetrain to their design.
Explore Robotics & Automation Applications
Every unit passes incoming, in-process, and final inspection at our Shenzhen factory, backed by 15+ years of R&D and ISO 9001:2015 certification.
We support everything from sample customization to stable bulk production, so request a custom linear actuator motor quote and our team will follow up.
Find quick answers on linear actuator motors, customization, and how we support OEM programs from sample to volume.
Most compact linear actuators use a brushed or brushless DC gear motor whose output shaft drives a lead screw; the gearbox sets the force-to-speed ratio and the screw pitch sets travel per revolution. Stepper gear motors are used where open-loop positioning of the stroke is enough.
SLW supplies the motor, gearbox, and screw-output shaft — the drivetrain — and pairs it to the screw pitch and stroke you specify; the housing, nut, and stroke limits are built on your side or by your actuator assembler.
Tell us your project or application requirements, and our team will get back to you with technical support, product recommendations, or a customized motor solution.
