Servo Actuators

A reliable source for Linear Actuator information and leading Linear Actuator Companies & Manufacturers.

Servo actuators are used to provide position control, utilizing linear motion in order to maintain proper functioning of another mechanism or equipment part. At its most basic, a servo is a small device that operates based on responding to error-sensing feedback.

While servomechanisms are used to provide and transmit a precise amount of energy used to correct a performance error through another mechanism that will provide the required work, servo actuators actually function to correct the performance error without the help of an additional device. Read More…Request for Quote

Since servo actuators provide such precision control, they are often utilized in industries such as: industrial manufacturing, for applications such as factory automation, instrumentation and material handling robotics; electronics, for use in beam steering applications, radio and remote-controlled vehicles and more; marine and aerospace, in automatic navigation systems; textile, for use in web guiding systems; and medical, for precision motion control of medical devices such as patient lifts.

Servo actuators can be powered through hydraulic, pneumatic and electromechanical means; however, electromechanical actuators and pneumatic servo actuators are much more common than hydraulic. The choice of actuation depends on the power, speed and precision requirements of the application.

Servo actuators consist of three main components: a servo motor, a set of gears and an output bearing. There are two main types of servo motors: brush and brushless. Well-suited for long stroke applications, a brush servo motor has a commutator with mechanical brushes that connect the power source to the armature, or a rotating coil that induces voltage from motion through a magnetic field.

Brushless servo motors, on the other hand, provide commutation through electrical means and, as a result, offer many advantages over the brush motor design such as a longer service life due to less mechanical wear and tear. The most common types of gears used in servo actuators are worm gears and planetary gears. Worm gears are gears that have a curved and recessed throat, whereas planetary gears consist of three or more small outer gears that rotate around a larger, central gear.

The output bearing is commonly encased in a hard, protective housing, typically made from metals such as aluminum, zinc or steel. The output bearing functions to allow for constrained linear motion between two or more mechanisms. In servo actuators, the bearing operates at an angle. The angle generally ranges from 0 to 180º, not exceeding 210º, and its movement is limited due to a mechanical stop that is attached to one of the gears.

Servo Actuators Servo actuators are used to provide position control, utilizing linear motion in order to maintain proper functioning of another mechanism or equipment part. At its most basic, a servo is a small device that operates based on responding to error-sensing feedback.

Leading Manufacturers

Bethel, CT  |  203-778-2727

Del-Tron Precision, Inc. was founded in order to serve the needs of automated equipment manufacturers for innovative, high quality and reasonably priced anti-friction linear bearings and associated products such as valve actuators.

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Del-Tron Precision, Inc. $$$

Pittsburg, CA  |  888-580-8272

We are a qualified small business just waiting to have the privilege of fulfilling your ball screw actuator needs. We are totally in house capable in order to be able to fill any order that we receive without the extra hassle of having to send it to other locations.

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Bishop-Wisecarver $$$

Battle Creek, MI  |  800-537-9940

Utilized in a variety of applications and industries, the products designed and manufactured at Burr Engineering & Development include ball screw actuators and similar mechanisms.

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Burr Engineering & Development Company $$$

Cutchogue, NY  |  888-321-9178

At Ultra Motion, linear actuators are our specialty! Allow us to provide for you levels of customization that you cannot get anyplace else. We have developed solutions for applications such as assembly lines, particle accelerators, heart and lung machines, and more.

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Ultra Motion $$$

Bethel, CT  |  800-447-2042

Tusk Direct’s specialty is linear motion components. We offer slides, bearings, lubricants and assemblies compatible with pneumatic or electric actuators and actuator systems.

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Tusk Direct, Inc. $$$

Saanichton. BC  |  206-347-9684

Our linear actuators are at the top of the market and on the leading edge of innovation. If you need a new design or modification to an existing design, we are the true professionals that you need to call.

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Actuonix Motion Devices $$$

Lansdale, PA  |  800-313-4753

SKF Motion Technologies is a leading global supplier of quality linear motion components. Our wide range of linear guides consist of linear ball bearings and profile rail guides with ball or roller recirculation and nearly unlimited axial motion. In addition, precision rail guides with constant rolling element contact, feature highest precision. Call us today for all of your linear motion needs.

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SKF Motion Technologies $$$
placeholder image Del-Tron Precision, Inc. Bishop-Wisecarver Burr Engineering & Development Company Ultra Motion Tusk Direct, Inc. Actuonix Motion Devices SKF Motion Technologies

Since servo actuators provide such precision control, they are often utilized in industries such as: industrial manufacturing, for applications such as factory automation, instrumentation and material handling robotics; electronics, for use in beam steering applications, radio and remote-controlled vehicles and more; marine and aerospace, in automatic navigation systems; textile, for use in web guiding systems; and medical, for precision motion control of medical devices such as patient lifts.

Servo actuators can be powered through hydraulic, pneumatic and electromechanical means; however, electromechanical actuators and pneumatic servo actuators are much more common than hydraulic. The choice of actuation depends on the power, speed and precision requirements of the application.

Servo actuators consist of three main components: a servo motor, a set of gears and an output bearing. There are two main types of servo motors: brush and brushless. Well-suited for long stroke applications, a brush servo motor has a commutator with mechanical brushes that connect the power source to the armature, or a rotating coil that induces voltage from motion through a magnetic field.

Brushless servo motors, on the other hand, provide commutation through electrical means and, as a result, offer many advantages over the brush motor design such as a longer service life due to less mechanical wear and tear. The most common types of gears used in servo actuators are worm gears and planetary gears. Worm gears are gears that have a curved and recessed throat, whereas planetary gears consist of three or more small outer gears that rotate around a larger, central gear.

The output bearing is commonly encased in a hard, protective housing, typically made from metals such as aluminum, zinc or steel. The output bearing functions to allow for constrained linear motion between two or more mechanisms. In servo actuators, the bearing operates at an angle. The angle generally ranges from 0 to 180º, not exceeding 210º, and its movement is limited due to a mechanical stop that is attached to one of the gears.

Servo Actuator Informational Video