DC Motors
DC Motors

Our broad line of DC Motors is designed for high-volume OEM applications with low cost being the primary objective. Our standard permanent magnet DC motors are offered with either a face or a flange mounting option, and are offered in sizes ranging from 20mm to 95mm in diameter. Compact in size, these motors provide a rated torque from 0.08 all the way up to 113.28 oz-in. For a higher torque option, select from our line of 56C frame permanent magnet DC motors. These large frame motors are available in many different power levels, ranging from 1/2 to 1 horsepower. Offered in various operating voltages, these motors deliver rated torque from 288 to 576 oz-in! All of our DC motors are customizable; options include optimizing maximum speed, torque, and voltage, and/or modifying cabling, wiring, connectors, and or shafts. Please note that not all of our DC motors are stock items; minimum purchases will be required for some part numbers listed. However, for most applications, going to another DC motor series, or just a size larger, may provide the solution for your requirements.

Voltage: DC
Speed: RPM

  • Voltage: 1.2 - 230VDC
  • Rated Torque: 0.08 to 113.28 Ounce-Inches
  • Frame Sizes: 20mm to 95mm
  • Speed: 900 to 26,100 RPM
  • Cost-Effective Rotary Motion Control
  • DC Motors are Fully Reversible
  • Pump, Fan, and Drill Applications
  • Popular for Robotics and Hobbyists
  • Customization and Motor Adders Available
  • Designed for High-Volume Applications (Many Items in Stock)
  • Voltage: 90VDC
  • Horsepower: 1/27 and 1/8
  • Rated Torque: 20.8 to 70 Ounce-Inches
  • Frame Sizes: 66mm to 80mm
  • Speed: 1800 RPM
  • Cost-Effective Rotary Motion Control
  • DC Motors are Fully Reversible
  • Totally Enclosed Non Ventilated (TENV)
  • Double Shielded Ball Bearings
  • Voltage: 90 - 180VDC
  • Horsepower: 1/2, 3/4, and 1HP
  • Rated Torque: 288 to 576 Ounce-Inches
  • Frame Size: 56C
  • Speed: 1,800 and 2,500 RPM
  • Cost-Effective Rotary Motion Control
  • DC Motors are Fully Reversible
  • Totally Enclosed Fan Cooled (TEFC)
  • Class F Insulation Means Max Temp up to
     221° F at Full Load

Frequently Asked Questions
What is the best way to test a DC Motor?
The best way to test Brush DC Motors is to place a voltage across the motor leads and see if the motor turns. If the motor rotates, you can check the no load speed and no load current to determine if the motor is operating normally. To check if the motor runs in the opposite direction, change the polarity of the wires, and the motor should rotate in the opposite direction.

What are poles in a Brushless DC Motor?
Poles in the BLDC motors refer to the Magnetic North and South poles in the Permanent Magnet. A 4 pole motor has 2 North Poles and 2 South Poles. The higher the number of poles, the smoother the motor will run.

What is the recommended cable distance between Anaheim Automation BLDC motors and drivers?
We recommend that the wiring between BLDC motors and controller not exceed 25 feet. Although it is not required, we suggest using Anaheim Automation shielded motor cable. This cable is ideally suited to handle all driver and motor combinations that we offer. We can also add connectors to the cables. Please contact an Applications Engineer for more details.

What is the life expectancy of Anaheim Automation BLDC Motors?
Anaheim Automation BLDC motors have a 10,000 - 15,000 hour life expectancy under normal operating conditions. Anaheim Automation’s warranty is 12 months after the invoice date. See the “Environmental Conditions” sections of the BLDC motor guide for more details.

Are there any environmental considerations I should be aware of to operate a BLDC motor and controller?
Precaution must be taken by the user with respect to the environment of the BLDC motor during operation, repair, and service. The environment in which a BLDC Motor is used must be conducive to good general practices of electrical equipment. Do not run a BLDC motor near flammable gases, dust, oil, vapor or moisture. The BLDC motor must be protected by a cover if operated outdoors, ensuring the motor receives adequate air flow and cooling. Any presence of moisture may result in system failure and/or electric shock. Therefore adequate care should be taken to avoid any interaction between the motor and any kind of moisture or vapors. A BLDC motor should be installed in an environment free from vibration, shock, condensation, dust and electrical noise. Anaheim Automation carries a full line of IP65 Rated BLDC motors for operation in harsh, humid environments.

What variables contribute to Brush DC Motor noise?
Motor mounting in application, load and speed of the motor, and type of bearings all play a role in motor noise. The touching of the internal brushes to the commutator of Brush DC motors also contributes noise to this type of motor.

Are Anaheim Automation’s Brush DC Motors reversible?
Yes, Anaheim Automation's Brush DC Motors are reversible. This can be easily done to by reversing the polarity on the Power Supply or the motor leads.

What is the primary difference between a Brush DC Motor and a Brushless DC Motor?
Brush DC Motors use commutation brushes which change the direction current flows periodically to maintain torque. Because of brush wear, a Brush DC Motor requires more maintenance and has shorter life than Brushless DC Motors. Instead of brushes, Brushless Motors use Hall Sensors which are placed at the back end of the motor. These Hall Sensors output high-low pulses when they detect a change in magnetic field. For this reason, Brushless DC Motors require the use of more complex circuitry found in Variable Speed Drives (VSD). Also, since Brushless DC Motors do not use brushes for commutation purposes, they are far more efficient, require very low maintenance and have a longer life than Brush DC Motors.

What is the lifetime of Anaheim Automation’s motors and gearboxes?
Under normal operating parameters, Anaheim Automation's Stepper and BLDC Motors and gearboxes have rated lifetimes of 20,000 hours.

What precautions should I take in setting up my Brush motor system?
Safety should be the number one concern when performing any task related to the electrical connection of motors, drivers, and controllers, as well as all other motion control products and electrical equipment. Therefore, check every step thoroughly. During the installation of brush dc motors, drivers and controllers, it is important to minimize the possibility of electrical noise entering critical sensitive circuits. This is best accomplished by following the electrical installation procedures precisely.

Make certain that any sub-panels installed inside the enclosure for mounting any motion control components, must be a flat, rigid surface that will be free from shock, vibration, moisture, oil, vapors, debris or dust. All components should be mounted in a stable fashion, secured tightly. Read the User’s Guide for all motion control products (available on our web site). Remember that motors, drivers and controllers will produce heat during operation. Therefore, heat dissipation should be considered in designing the layout. Size the enclosure so as not to exceed the maximum ambient temperature rating. It is recommended that the drivers and controllers be mounted in an upright position whenever possible, providing adequate airflow at all times. Add a fan(s) to help dissipate heat wherever it is practical to do so.

What is the material of shaft on Brush DC motors?
Shaft on most of our standard Brush DC motors are made with Carbon Steel.

Helpful Information
Although Brush DC Motors have been overshadowed by the brushless motor, Brush DC Motors are still used in a wide range of applications. Just because we may not see Brush Motors very often, they really are everywhere ranging from toys to cellular phones to Jacuzzi pumps. Most automatic car windows and automatic seat adjustments are operated by Brush Motors. Brush DC Motors have been an automotive industry favorite because of their relatively low cost and simple design. Brush DC Motors come in all different sizes all with different torque and speed specifications; so whatever your application may be there most likely are Brush DC Motors that will meet your demands.

The operation of any Brush DC Motors are based on electromagnetism. The Brush DC Motors have two terminals, when voltage is applied across these two terminals of the Brush DC Motors, a proportional speed is outputted to the shaft of Brush DC Motors. Our Brush DC Motors consist of two pieces; first we have the Brush DC Motor stator which includes the housing, permanent magnets, and brushes and secondly we have the Brush DC Motor rotor which consists of the output shaft, windings and commutator. The Brush DC Motor stator is the stationary part of the Brush Motor and the Brush DC Motor rotor rotates with respect to the Brush Motor stator. When power is applied to the Brush DC Motor rotor windings the polarity of the winding and stator magnets are misaligned, and the Brush DC Motor rotor will rotate until it is almost aligned with the stator magnets. As the Brush DC Motor rotors reaches alignment, the brushes in Brush DC Motors move to the next commutator contacts and energize the next winding causing the current to reverse causing the winding and Brush Motor stator magnets to misalign again, this process repeatedly is what keeps our Brush DC Motors rotating.

Carbon Brushes
In DC Motors, a carbon brush is a device which conducts current between stationary wires and moving parts. For DC Motors to work, the coils of the DC Motor rotor must be connected to complete an actual circuit. To do this, slip rings are affixed to the shaft of DC Motors, and brushes attached to the rings which will be used to conduct the current. The carbon brush of DC Motors is a critical component of DC Motors but is considered the weak point in the DC Motors as well because it is highly susceptible to wear, especially when operating outside of operating parameters of the DC Motors. Although these carbon brushes of DC Motors are considered a weak point and can wear, they can also be easily replaced with new carbon brushes for DC Motors. Although many people consider carbon brushes in DC Motors to be a Black Art, they still serve a great purpose when subjected to the proper operating conditions. They tend to yield an excellent life and perform an amazing function for DC Motors.

Armature – the component of DC motors that produces power. It can be located on either the stator or the rotor. Brush – mechanism that conducts current in between moving parts and stationary wires. Brushed Compound DC Motors -a combination of the brushed shunt and brushed series wound motors by combining the characteristics of both. Brushed Permanent Magnet DC Motors - contain permanent magnets inside, hence the name, which eliminates the need for external field current. This design yields a smaller, lighter, and energy efficient Brush Motor. Brushed Separately Excited DC Motors - used for its high torque capability at low speeds which is achieved by separately generating a high stator field current and enough armature voltage to produce the required rotor torque current. Brushed Series Wound DC Motors - speed varies automatically with the load, increasing as the load decreases Brushed Shunt Wound DC Motors - run at constant speed regardless of the load. Commutator – mechanism which reverses the direction of current in certain electric motors. Direct Current – electrical charge constantly flows in the same direction. As opposed to alternating current, where current periodically switches direction. Electrical Power – electric circuits transferring electrical power at a given rate. Overcurrent – can lead to damaging of equipment due to excessive heat produced within DC motors. This occurs because a larger amount of electric current is produced through the conductor. Rotor – rotating device in an electric motor which rotates about DC motors generating torque among the rotor’s axis. Stator – part of DC motors that is stationary. Torque – the ability of a force to rotate a given object about an axis or fulcrum.

The history of Brush DC Motors can be traced back to the 1830s, when Michael Faraday set to devise an experiment to demonstrate whether or not a current carrying wire produced a circular magnetic field around it. Michael Faradays experiment turned out to be a success; the current carrying wire did produce a circular magnetic field. While Michael Faraday is often credited for the invention of the electric motor, his experiment is really just a lab demonstration; as you cant harness it for useful work. Several other scientists such as: Joseph Henry and William Sturgeon based their work on Faradays experiment and theories and by the late nineteenth century the design of Brush DC Motors had become well established. The demand for Brush DC Motors has skyrocketed since than as a necessity in industrial applications.

How Do Brush DC Motors Work
Brush DC motors consist of two magnets facing the same direction, that surround two coils of wire that reside in the middle of DC motors around a rotor. The coils are positioned to face the magnets, causing electricity to flow to them. This generates a magnetic field, which ultimately pushes the coils away from the magnets they are facing, and causes the rotor to turn. The current shuts off at the rotor makes a 180 turn, causing each rotor to face the opposite magnet. As the current turns on again, the electricity flows oppositely, sending another pulse that causes the rotor to turn once again. The brushes that are located within DC motors transfer the electricity from the rotor, controlling the motor’s timing; turning it on and off when instructed.

How Much Do Brush DC Motors Cost
Brushed DC Motors has a relatively inexpensive and simple design. This is a major advantage to brush DC motors, in that it’s initial start-up costs are affordable; in some cases they are even half the price of their brushless counterparts. However due to the high maintenance and moderately short lifespan, brush DC motors tend to increase in price over time, because the brushes within DC motors are apt to wearing and require replacement.

Lifetime for Brush DC Motors
The life of the brushes, bearings, and gearbox all play a role in the longevity of brush DC motors. Most commonly, life expectancies range from 2,000 to 5,000 hrs of operation, although actual service life varies. The design, operating current, speed, voltage, and other conditions of DC Motors are all contributing factors.

Required Maintenance for Brush DC Motors
Always ensure the DC motors, as well as the motor environment is kept clean, preventing the motor from potentially encountering any type of dirt, oils, or debris. All mounting bolts should be kept tight, and the operation of the motor is in accordance with the given instructions on installation. DC Motors generally tends to have increased maintenance requirements in comparison to those of AC motors, because many of the motor’s components are constantly coming in contact with one another. Over time, the brushes will wear and will require replacement. Also, the interaction between the commutator and the brushes will cause debris and contaminants to settle within DC motors, that require cleaning up after. Most commonly this occurs between the commutator and the shaft of DC motors, as well as between the winding and the armature.

Tech Tip – Advantages and Disadvantages
Brushed DC Motors are one of the earliest of all electrical motor designs. It is usually the motor of choice for the majority of torque control and variable speed applications. This Tech Tip discusses the advantages and disadvantages of using Brushed DC motors in machinery and processes. Advantages of Brushed DC Motors • Brushed DC Motors have a simple construction, therefore requiring a cheap drive design • Understandable design/technology facilitates in quick application of Brushed DC Motors. • The design of Brushed DC motors are quite simple, in that a permanent magnetic field is created in the by either of two means: • Permanent magnets • Electro-magnetic windings • If the field is created by permanent magnets, Brushed DC Motors are said to be a permanent magnet DC motor (PMDC). If created by electromagnetic windings, the brush motor is often said to be a shunt wound Brush DC motor (SWDC). Today, because of cost-effectiveness and reliability, the PMDC motor is the motor of choice for applications involving fractional horsepower brushed DC motors, as well as most applications up to about 2.0 horsepower. • Opposing the stator field is the armature field, which is generated by a changing electromagnetic flux coming from windings located on the rotor of Brushed DC motors. The magnetic poles of the armature field will attempt to line up with the opposite magnetic poles generated by the stator field. Next, the section of the rotor where the electricity enters the rotor windings is called the commutator. The electricity is carried between the brush motor rotor and the stator by conductive graphite-copper brushes (mounted on the rotor) which contact rings on stator. Important to Note: If Brushed DC motors suffer a loss of field (if for example, the field power connections are broken), the Brushed DC Motor will immediately begin to accelerate to the top speed which the loading will allow. This can result in the motor flying apart if the motor is lightly loaded. The possible loss of field must be accounted for, particularly with shunt wound Brushed DC Motors. Imagine power is supplied: Brushed DC Motors rotate toward the pole alignment point. Just as Brushed DC motors would get to this point, the brushes jump across a gap in the stator rings. Momentum carries brushed DC motors forward over this gap. When the brushes get to the other side of the gap, they contact the stator rings again and - the polarity of the voltage is reversed in this set of rings! The brush motor begins accelerating again, to the opposite set of poles. (The momentum has carried Brushed DC motors past the original pole alignment point.) This continues as Brushed DC Motors rotate. In most DC motors, several sets of windings or permanent magnets are present to smooth out the motion. Brushed DC Motors are simple to control speed • Simple to control speed - Controlling the speed of Brushed DC motors are simple. The higher the armature voltage, the faster the rotation. This relationship is linear to the brush motors maximum speed. • The maximum armature voltage which corresponds to the rated speed of the brush motors (these brush DC motors are usually given a rated speed and a maximum speed, such as 1750/2000 rpm) are available in certain standard voltages, which roughly increase in conjunction with horsepower. • The smallest industrial-type brush DC motors are rated 90 VDC and 180 VDC. Larger units are rated at 250 VDC and even higher (dependent upon the individual manufacturer). • Most industrial brush DC motors operate reliably over a speed range of about 20:1 - down to about 5-7% of base speed. This is much better performance than the comparable AC motor. This fact is in part due to the fact of the mere simplicity of control. However, it is also partly due to the fact that most industrial DC motors were designed with variable speed operations in mind. The addition of heat dissipation features/ devices provided for lower operating speeds of DC motors. • NOTE: Specialty Brushed DC motors are used in mobile applications and are typically rated 12, 24, or 48 VDC. Other tiny brush motors can be rated as low as 5 VDC. These Brushed DC Motors are very popular among hobbyists. Brushed DC Motors are simple to control torque • In Brushed DC motors, torque control is also easy to accomplish. Output torque is proportional to current. So, if the current is limited, you have just limited the torque which brush DCmotors can achieve. • This fact makes Brushed DC brushs motor ideal for delicate applications such as textile manufacturing. Simple and inexpensive drive/control design The result of this design is that variable speed or variable torque electronics are easy to design and manufacture. Varying the speed of Brushed DC motors requires little more than a large enough potentiometer. In practice, these have been replaced for all but sub-fractional horsepower applications by the SCR and PWM drives (sometimes referred to as controls), which offer relatively precisely control voltage and current. Common drives for a Brushed DC motor is available at the low-end of the product offering (up to 2 horsepower). The cost will depend on the accuracy requirement, but many brush motors can be accompanied with drives ranging from $29.00 - $199.00 USD. Disadvantages of Brushed DC Motors • Brushed DC motors can be a bit expensive to produce, in that the raw materials have become more costly in recent year • Brushed DC motors are less reliable in control at lowest speeds • Brushed DC motors are physically larger than other motors with the same torque • Brushed DC motors are much more high maintenance than are brushless motors • Brushed DC motors become vulnerable to dust which decrease

There are five basic types of Brushed DC Motors: brushed shunt mount motor, brushed series wound motor, brushed compound motor, brushed permanent magnet motor, and brushed separately excited Brushed DC motor. A brushed shunt wound motor will run at constant speed regardless of the load. With series wound Brushed DC motors the speed varies automatically with the load, increasing as the load decreases. This series wound motor is usually limited when heavy power demand is necessary. The compound Brushed DC motors are a combination of the brushed shunt and brushed series wound motors by combining the characteristics of both. Compound Brushed DC motors are usually used when severe starting conditions are met and constant speed. Brushed Permanent magnet motors contain permanent magnets inside, hence the name, which eliminates the need for external field current. This design yields a smaller, lighter, and energy efficient Brushed DC Motors. Lastly the brushed separately excited motor is used for its high torque capability at low speeds which is achieved by separately generating a high stator field current and enough armature voltage to produce the required rotor torque current.

What are Brushed DC Motors
Brushed DC motors provide precision control of speed, driven by a direct current. Noted for a particularly high ratio of torque to inertia, brushed DC motors have the potential to supply three to four times more torque than it’s rated torque. If needed, it can even provide up to five times more than the rated torque, without stalling. Brushed DC motors consist of six different components: the axle, armature/rotor, commutator, stator, magnets, and brushes. Brushed DC motors offer stable and continuous current, using rings to power a magnetic drive that operates the motor’s armature. Perhaps one of the earliest used motors, brushed DC motors are commonly used because of the ability to vary the speed-torque ratio in almost any way.

What Industries are Brushed DC Motors Used In
Although the brushless DC motor has recently surpassed brushed DC motors because of its longetivity and reliability, brushed DC motors are still used in applications everywhere. Most commonly, brushed DC motors are found in household applications, but can also be found being used in the industrial world because of it’s versatility in altering it’s torque to speed ratio. Brushed DC motors are particularly a favorite in the automotive industry, because of their simplicity and affordability. Many automotive manufacturers use them for power windows, seats, etc. However, brushed DC motors can be found in nearly every industry ranging from computer manufacturing to textiles to toys.