DC Actuators

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

DC Actuators

DC actuators are devices that produce linear motion through conversion of electrical direct current (DC) energy to mechanical energy. DC energy is one of the two main types of energy flow, the other being alternating current (AC) energy.

DC is the unidirectional flow of electricity, while AC oscillates electrical flow backwards and forwards at specific frequencies. A much simple source of energy, DC is used in mostly low-voltage applications and can be obtained from an AC current or changed into an AC current through the use of either an inverter or a motor-generator set. Read More…Request for Quote

DC Actuators DC actuators are devices that produce linear motion through conversion of electrical direct current (DC) energy to mechanical energy. DC energy is one of the two main types of energy flow, the other being alternating current (AC) energy.

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 $$$

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. $$$

Victoria, 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 Tusk Direct, Inc. Actuonix Motion Devices SKF Motion Technologies

The ability to be changed into an AC current is important because nearly all modern electric power distribution is AC. As a result, DC actuators are typically used in industries and applications such as: medical, for hospital beds, dental chairs and additional medical equipment; industrial manufacturing, for machining, automation and construction applications; automotive, for seat positioning, electrical suspensions and light-duty applications; and commercial and residential applications such as ventilation, home automation, food preparation and commercial satellite tracking.

For these applications and more, DC actuators are ideal as a result of their capabilities including precision positioning, speed and long service lives.

The main parts of DC actuators are a DC motor, a screw rod and a housing, made from metals such as aluminum, zinc or steel. The DC motor can be brushed or brushless. A brushed DC motor consists of a permanent magnet stator and a wound iron-core armature, as well as a commutator with mechanical brushes.

While the brushes serve to connect the power source to the armature, or a rotating coil that induces voltage from motion through a magnetic field, the brushes also cause decreased service life due to wear and tear. As a result, brushless DC motors can offer many advantages over the more traditional brushed DC motor design.

DC Actuators DC Actuators - Burr Engineering & Development Company

Brushless DC motors consist of a permanent magnet rotor and coils that are within the stator. Instead of utilizing a mechanical commutation system, brushless DC motors use an electronically controlled commutation system. DC actuators may use ball screws or lead screws depending on the application; both types of screws can be used to translating rotational motion to linear motion.

However, ball screw actuators can typically offer reduced friction. To function, the dc motor is mechanically connected to a screw so that when the motor rotates, the screw also rotates. A nut is threaded onto the non-rotating part of the screw so that the nut will not rotate.

Instead of rotating, the nut will be driven along the threads of the screw in a linear movement corresponding to the screw's rotational motion. DC actuators often utilize worm gear sets to provide the required torque needed to rotate the screw.

DC Actuator Informational Video