Servo Motor Manufacturer
AC & DC Servo Motors for Precision Motion Control
United Motion Inc. provides AC and DC servo motors for applications requiring precise control of position, speed, and torque. Our servo motor solutions support different power, voltage, inertia, encoder, and installation requirements for industrial motion systems.
United Motion Inc. is the authorized distributor of Oli Motions Control in North America.
Oli’s M series servo motors cover 24-72VDC and 200-240V/380-480VAC supply voltages. Power range from 50W to 30kW, with Motor protection level being IP65/67, and can support several encoders like 2500P/17bit/20bit etc.
Servo Motor Engineering Features
Designed for precise, responsive, and stable motion control across demanding industrial applications.
Multiple Inertia Options
Low, medium, and high inertia configurations help match motor response characteristics to different loads and motion profiles.
Low Torque Ripple
Optimized electromagnetic design helps reduce torque ripple and support smooth operation at low speeds and during precision motion.
High Power Density
Compact motor construction provides useful output power while supporting space-constrained industrial motion systems.
3.5× Overload Capability
Short-term overload capability helps the motor handle acceleration, sudden load changes, and demanding dynamic operating conditions.
2× Overspeed Capability
The available speed range supports applications requiring rapid motion and flexible operating speeds.
High-Resolution Encoder
Encoder options including 2500P, 17-bit, and 20-bit configurations support accurate position and speed feedback.
How Does a Servo Motor Work?
A servo motor operates as part of a closed-loop motion control system. The controller sends a motion command, while the servo drive regulates motor operation and the encoder continuously provides feedback for accurate position, speed, and torque control.
Motion Command
The controller sends the required position, speed, or torque command.
Servo Drive
The drive converts the command into controlled electrical power.
Motor Operation
The servo motor converts electrical energy into controlled mechanical motion.
Encoder Feedback
The encoder measures motor position and speed and sends feedback to the control system.
Real-Time Correction
The system continuously corrects motor output to maintain accurate motion.
AC Servo vs DC Servo Motor
| Comparison | AC Servo Motor | DC Servo Motor |
|---|---|---|
| Power Source | AC | DC |
| Motor Structure | Typically brushless PMSM-type construction | Brushed or brushless configurations |
| Maintenance | Low maintenance | Depends on motor construction |
| Control | Precise position, speed and torque control | Precise position, speed and torque control |
| Speed Range | Wide speed range | Suitable for low to medium speed applications |
| Typical Applications | CNC, robotics, factory automation | Compact and DC-powered motion systems |
| System Integration | AC servo drive and feedback system | DC servo drive and feedback system |
Servo Motors for Precision Motion Control
Servo motors provide accurate positioning, responsive speed control, and reliable motion for demanding automation applications.
Industrial Robotics
Precise motion control for robotic arms, pick-and-place systems, collaborative robots, and automated assembly.
CNC Machines
Accurate speed and position control for machining centers, milling machines, lathes, and engraving equipment.
Packaging Machinery
Controlled motion for filling, labeling, sealing, wrapping, and automated packaging systems.
AGV & AMR
Smooth acceleration and accurate motion control for automated guided vehicles and autonomous mobile robots.
Semiconductor Equipment
High-precision, low-vibration motion control for semiconductor manufacturing and electronic production systems.
Medical Equipment
Compact servo motor solutions for laboratory automation, surgical systems, and precision medical equipment.
Configure a Servo Motor for Your Application
Servo motor solutions can be configured according to your required power, voltage, speed, torque, feedback, inertia, and mechanical installation requirements.
How to Select the Right Servo Motor
Proper servo motor selection starts with the load, motion profile, control requirements, and mechanical installation conditions.
Required Torque
Determine continuous and peak torque requirements during normal operation, acceleration, and deceleration.
Operating Speed
Match the motor's rated and maximum speed to the required motion profile and operating cycle.
Load Inertia
Consider the relationship between motor inertia and load inertia to achieve stable acceleration and responsive control.
Encoder Resolution
Select the appropriate encoder resolution according to the required positioning accuracy and feedback performance.
Duty Cycle
Evaluate continuous operation, acceleration frequency, overload conditions, and thermal requirements.
Installation Requirements
Check available space, shaft configuration, mounting dimensions, protection level, and drive compatibility.
FAQS about Servo Motor
A servo motor is an electromechanical device designed for precise control of position, speed, and torque by using a closed-loop feedback system. It continuously monitors its output through sensors such as encoders and adjusts the input signal to achieve accurate and stable motion control.
Servo motors offer several key advantages, including high precision, fast response, high torque at low speeds, and excellent stability under dynamic load conditions. These features make them ideal for applications that require accurate positioning and consistent performance, such as automation and robotics.
A complete servo system includes a servo motor, a controller, a driver or amplifier, and a feedback device such as an encoder or resolver. These components work together to ensure precise motion control by continuously adjusting performance based on real-time feedback.
Servo motors are widely used in industries such as industrial automation, robotics, CNC machinery, aerospace systems, and medical devices because they provide precise and responsive motion control in complex and high-performance environments.
Different inertia levels affect how a servo motor responds to changes in speed and load, where low inertia motors provide fast acceleration and quick response, while high inertia motors offer greater stability and better handling of heavy loads. Selecting the right inertia level is essential for optimizing system performance in specific applications.
High overload capability allows a servo motor to deliver significantly higher torque than its rated value for short periods, which is important for handling sudden load changes and demanding operating conditions. This feature improves system reliability and ensures consistent performance in heavy-duty applications.
Servo motors can be customized to meet specific application requirements by adjusting parameters such as power range, voltage, encoder type, and mechanical configuration. Many manufacturers also provide options for integrating drivers and control systems to deliver complete motion solutions.
United Motion Inc. is a reliable servo motor supplier that provides a wide range of DC and AC servo motors with different power ranges, inertia options, and encoder configurations. With strong engineering support and global manufacturing resources, the company helps customers develop efficient and precise motion control solutions for industrial applications.
