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This section provides an overview for small servo motors as well as their applications and principles. Also, please take a look at the list of 13 small servo motor manufacturers and their company rankings. Here are the top-ranked small servo motor companies as of December, 2024: 1.MOOG, 2.Baumüller Nürnberg GmbH, 3.Vector.
Table of Contents
A small servo motor is a motor capable of high-precision positioning and speed control.
The motor has built-in speed and torque controllers, which provide feedback to the command value to achieve high-precision control. The word "servo" in servo motor is derived from the Greek word servus (slave), which includes the meaning of moving precisely in response to commands.
DC servo motors, powered by direct current, were once the primary choice, but AC servo motors, driven by alternating current, have now become the mainstream due to their superior durability and ease of maintenance. Although the term "small" is used in this article, there is no clear definition of the term.
The classification is made according to the line-up of each motor manufacturer, such as large, small, and precision.
Small servo motors are used in production lines, measuring equipment, medical equipment, and other applications that require precise motion. Specific examples include machine tools, industrial robots, precision instruments and electronic components, liquid crystal displays, semiconductor manufacturing equipment, inspection equipment, and biological equipment.
For example, an industrial robot used in an automobile manufacturing plant can perform tasks such as picking, welding, and painting on parts repeatedly and accurately, and this is achieved through precise control by servo motors. In our daily lives, servo motors are also used in various office automation equipment and automobiles.
Servo motors can operate accurately when combined with multiple devices. A servo motor system consists of a controller as the control tower, a driver or servo amplifier as the control unit, and a motor as the drive unit. In addition, an encoder serves as a detector to determine the actual driving status of the motor.
When a servo motor operates, the controller transmits operating conditions such as position, revolutions, torque, and speed to the driver. Based on the conditions transmitted by the driver and the motor's rotation status transmitted by the encoder, the driver applies the optimum power to the motor for rotation, and the motor is controlled based on feedback from the encoder to achieve the target rotation conditions communicated by the controller.
In general, either a speed control system or a position control system is used when the servo controller gives commands to the driver.
In addition to servo motors, there are various other types of motors, including DC motors, AC motors, and pulse motors. Among these, there are two types of servo motors: DC servo motors, which are DC motors, and AC servo motors, which are AC motors. AC servo motors are currently the most widely used.
AC servo motors use a permanent magnet on a rotating shaft called the rotor which is surrounded by an iron core and coils, forming a stator around the rotating shaft. The stator generates a magnetic field by passing an electric current through the stator's coil in accordance with the timing of the frequency of the alternating current. This generates an attractive or repulsive force between the stator and the permanent magnet on the rotating shaft, causing the rotating shaft to rotate.
The rotating shaft is operated without contact with the coil, so the only frictional sliding part is the bearing. Since current flows through the stator side, it is the stator on the outside of the motor that generates heat. From the standpoint of heat dissipation, AC motors are easier to dissipate heat because the stator, which is on the outside of the motor, generates heat.
On the other hand, DC servo motors provide high torque even though they are relatively small. Another feature of DC servomotors is their controllability and low cost. However, DC motors cause brush wear because the brushes and commutator are in direct contact and conduct electricity. Maintenance is required to deal with the wear, and another disadvantage is the possibility of sparks caused by brush wear powder in some environments.
*Including some distributors, etc.
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Moog Inc. was incorporated in 1951 and is headquartered in East Aurora, New York. The company designs manufactures and integrates precision motion and fluid controls and control systems for customers including OEMS in industries such as aerospace, defense, industrial machinery, motorsports, and construction. The company’s product offerings include both systems and components. Examples of systems include actuation systems, naval systems, turreted weapon systems, and space vehicles. Examples of components include manifolds, slip rings, actuators, and servo actuators.
Citizen Chiba Precision was established in Chiba, Japan in 1979. Citizen is a leader of miniaturized precision motors and customized products which custom-made to meet specific customer requirements for among others, semiconductor manufacturing equipment, medical equipment, and laser application products. Examples of Citizen’s products include optical scanners, linear actuators, servomotors, gear heads, and control drivers.
Desheng Intelligent Technology Co., Ltd, a leading Chinese Servo Manufacturer since May 2013. We operate from a 12,000 sqm facility in Dongguan with a monthly production capacity of 800,000 sets. Our servos are used in STEAM education, robotics, UAVs, and more. We're ISO9001 certified, with CE, FCC, and ROHS compliance. We focus on in-house quality control, ensuring top-notch products. We serve customers in China, Southeast Asia, the USA, Canada, Europe, and the UAE. For custom solutions and great service, contact us. ODM&OEM inquiries are welcome. Thank you!
Founded in 1938, Sankyo Seisakusho Co., Ltd. primarily serves the automobile, medical, and aerospace industries. Sankyo Seisakusho’s mane products include precision reducing gears, roller drives, intermittent indexing devices, indexing drives, feeders, motion control, and machine tool related equipment. Sankyo Seisakusho has a global reach with both factories and sales offices in the United States.
Vector, founded in 2004 and headquartered in Dongguan City, China, is a manufacturer specializing in industrial automation products and solutions. The company offers a comprehensive product portfolio that includes a range of solutions, such as the chasing knife servo system in construction automation equipment, rotary knife servo system for vertical packing machines with UART/RS232 connectivity, a 220V small power 0.2KW and 0.4KW economical servo drive for labeling machines, the MULTIPROG 3 Axis analog and pulse motion controller with 8 IO expansion for printing machines, and a 75KW and 55KW fast response programmable spindle servo motor drive for CNC equipment.
Baumüller, founded in 1930 with headquarters in Nuremberg, Germany, is a manufacturer of servo technology, electric automation, and drive systems machinery and equipment. The company's products include decentralized drives, servo motors, high-torque motors, servo pumps, and mobile drives. Baumüller offers customers services that include custom engineering, commissioning, and maintenance of their machines. The company also offers custom planning, engineering, fabrication, and installation of its full automation systems, such as those used in machine manufacturing.
Rozum Robotics, founded in 2015, is a manufacturer of advanced robotic systems and components based in Minsk, Belarus. The company's offerings include various robotic products, including robotic arms, robot controllers, linear actuators, and custom solutions. One of the standout features of the company's robotic arms is its precision. These arms are engineered to perform tasks accurately, ideal in applications requiring precise movements, such as assembly, quality control, and material handling. The company has also ventured into the field of collaborative robots. These robots are designed to work safely alongside humans and are particularly valuable in medical environments and research labs.
Founded in New York in 1916, Kollmorgen designs and manufactures motion system, drives, motors, actuators, gear heads, automated guided vehicle (AVG) systems, and accessories across a number of implementations and industries. These include aerospace, AGV, food&beverage, machine tools, metal forming, medical automation and imaging, energy, packaging, pharmaceutical, postal sorting, printing, robotics, smart warehouses, and tire and rubber production. Kollmorgen assists customers both in custom designs and in allowing customers to design their own devices based on individual needs.
WITTENSTEIN, founded in 1949 in Germany, is a manufacturer and supplier of precision components and systems for motion control applications. The company’s product range encompasses planetary gearboxes, servo motors, and actuators that cater to various industries including robotics, aerospace, and medical technology. WITTENSTEIN's relentless pursuit of creativity and engineering brilliance drives the development of cutting-edge solutions that enhance precision and efficiency in motion control systems. With a strong legacy and a passion for pushing the boundaries of technology, the company continues to shape the landscape of motion control across diverse industries.
Yaskawa America Inc., started in 1967 and based in Waukegan, Illinois, is a manufacturer of machine controllers, industrial robots, and variable frequency drives and is part of Yaskawa Electric Corporation. Some of its products include industrial AC drives, machine controllers, and IEC programmable robots. The company incorporates the Kaizen method of continuous incremental improvements and Total Quality Management processes to prevent manufacturing defects, and its distributors must be certified and re-certified every two years. It is ISO 9001 certified and is the only industrial drives and motion control manufacturer to win the Deming Medal.
BEGE is a supplier of customer-specific drives and controls for various applications. It designs custom solutions that perfectly meet customers’ unique needs serving as a partner for both machine builders and end users to engineer and optimize production processes. The company specializes in drive systems, control systems, and providing custom solutions. By utilizing its expertise with sector-specific knowledge, the company provides suitable solutions across various industries. This approach results in solutions that enhance competitiveness in sectors such as Food & Drink, Packaging, Bulk & Solids, Marine, and Agriculture.
Ranking as of December 2024
Derivation Method| Rank | Company | Click Share |
|---|---|---|
| 1 | MOOG |
14.8%
|
| 2 | Baumüller Nürnberg GmbH |
11.8%
|
| 3 | Vector |
11.4%
|
| 4 | Rozum Robotics |
10.5%
|
| 5 | BEGE |
9.7%
|
| 6 | Citizen Chiba Precision CO.,LTD. |
9.7%
|
| 7 | Kollmorgen Corporation |
9.7%
|
| 8 | Desheng Intelligent Technology Co., Ltd. |
6.8%
|
| 9 | Wittenstein alpha |
5.9%
|
| 10 | Sankyo Seisakusho |
5.5%
|
Derivation Method
The ranking is calculated based on the click share within the small servo motor page as of December 2024. Click share is defined as the total number of clicks for all companies during the period divided by the number of clicks for each company.Number of Employees
Newly Established Company
Company with a History
*Including some distributors, etc.
*Including some distributors, etc.
| Country | Number of Companies | Share (%) |
|---|---|---|
|
Japan
|
4 | 40.0% |
|
China
|
2 | 20.0% |
|
Germany
|
2 | 20.0% |
|
United States of America
|
1 | 10.0% |
|
Netherlands
|
1 | 10.0% |
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