A tiny electric motor is an example of an electromechanical device that converts electrical energy into mechanical energy. The motor’s output energy is used to move materials, power compressors, and rotate fans. Electric motors are powered by alternating current sources like electric generators, power grids, inverters, or direct current sources like batteries, rectifiers, and motor vehicles. Read More…
Leading Manufacturers
ElectroCraft, Inc.
Stratham, NH | 844-338-8114When reliability and power are a must, the universal motors you find at ElectroCraft can operate with high efficiency, low voltage, and at a low cost. Applications that our universal electric motors serve include robotics, packaging, automotive, and medical equipment. Electric motor products include the CompletePower™ Plus Universal Drive, complete with a user-friendly configurable interface. For more details, contact ElectroCraft today!
Koffler Electrical
San Leandro, CA | 510-567-0630Our specialty is electrical mechanical apparatus remanufacturing. We are the largest repairer of electric motors such as AC motors, DC motors, fractional HP motors and other small specialized equipment to 30,000 HP. In addition, we sell new electric motors (AC & DC), gearmotors and gearboxes.
Carter Motor Company
Monroe, WI | 608-325-9161At Carter Motor, some of the motors manufactured include AC universal motors, small motors, DC universal motors, DC permanent magnet motors, DC shunt wound motors and gearmotors, along with many others. All Carter Motor products are designed and assembled in the United States by hard-working employees. From engineers to shipping clerks, the staff takes pride in every part of the process.
Dumore Corporation
Mauston, WI | 888-467-8288Dumore Corporation is a leading designer of DC motors, custom fractional horsepower motors, gear motors and universal electric motors. Our high-quality fractional motors are used in a variety of applications and markets. In business since 1913, we have continued to manufacture our custom high-quality UL listed OEM motors. Dumore DC motors and gear motors are designed for complete, cost effective customization to meet your exact requirements or work with our team for a custom solution!
Hankscraft, Inc.
Reedsburg, WI | 608-524-4341Hankscraft has been in the fractional horsepower motors industry since 1920. With our extensive background in the industry and years of experience we are a trusted manufacturer and supplier. our decades of contract manufacturing experience, have given us the knowledge and expertise to have an extensive and growing list of capabilities available for our customers worldwide.
Components of Electric Motors
Electric motors are comprised of a rotor, stator, an air gap, windings, and a commutator.
Rotor
A rotor is a moving component in a motor, generator, or alternator's electromagnetic system. Inside a motor, a rotor will rotate a shaft to generate mechanical energy. Typically, the rotor has conductors positioned to store currents and interact with the stator's magnetic field. When the rotor spins, the magnetic fields and windings will interact and produce torque at the rotor axis.
Bearings
The motor’s bearings are crucial because they support the rotor's ability to rotate around its axis. By adapting the bearings to the load of the motor, the shaft of the electric motor can be made longer. Overhung loads are those that have load forces applied to the bearing's exterior side.
Stator
The stator is a dormant component of the motor's rotational system. It can be found in sirens, biological rotors, mud motors, and generators. A stator is made of permanent magnets, windings, or thin metal sheets known as laminations. These are employed to cut down on energy losses. The rotating armature of a motor is driven by a magnetic field that rotates around the stator.
Air Gap
The air gap in a motor refers to the space between the rotor and stator. The space has the biggest impact on the air gap effect. It is the main cause of the motor's poor power factor. As the distance between the rotor and stator widens, the magnetizing current will grow.
Windings
Windings are just wires inserted into the coils. They are encircled by a flexible iron magnetic core to create magnetic poles activated by the current. Copper windings are frequently used in motors because they effectively transport electrical load.
Commutator
A rotating electrical switch called a commutator reverses the direction of current flow between the rotor and the external circuit. The commutator is constructed using a cylinder that is assembled from several metal contact points on the machine's revolving armature. The commutator, which is made of copper and has the appearance of a half ring, is used to join the brushes to the coil.
How Small Electric Motors Function
An electric motor uses electromagnetic induction to function. A loop is created using a small conducting wire and placed between two magnets. the ends of the loop are then attached to battery connections.
Small Electric Motor Types
Small electric motors can be categorized based on power source, construction, and application. In addition to AC and DC motors, other available types of motors, include brushed, brushless, 1-phase, 2-phase, or 3-phase, air-cooled/liquid-cooled motors. General electric motors with typical characteristics and dimensions provide adequate mechanical power for industrial use.
- Small AC Electric Motors
- Small DC Electric Motors
Small AC Electric Motors
The tiny AC electric motor's primary job is to use electromagnetic induction to convert alternating current to mechanical current. The rotor and stator are the two primary components. The stator is the motor's stationary component, while the rotor spins. Small AC electric motors can have one or three phases. Three-phase motors are used for large power conversion, while single-phase motors are used for minor power conversion.
Small DC Electric Motors
A small DC electric motor is an electric rotational device that transforms DC energy into mechanical energy. The majority of motors rely on the magnetic field's generated forces. These motors' internal mechanisms, which alter the direction of current flow, are either electrical or electromechanical. The motor speed can be regulated by changing the potency of the current or the supply voltage within the field windings.
Small Electric Motor Advantages
- In comparison to other engines powered by fossil fuels, the price of these motors is low. The horsepower (hp) rating, however, is comparable for both.
- Electric motors have a longer lifespan.
- Electric motors can be automated for specific uses.
Uses For Electrical Motors
The following are some of the applications for electrical motors.
- These motors are used in rolling mills, compressors, alternators, fans, blowers, pumps, turbines, ships, tools used in machines, movers, and paper mills.
- These are the most crucial parts of automobiles, home appliances, and HVAC (heating, ventilation, and air conditioning) equipment.
- Industrial machinery such as mills, forklift trucks, letches, robots, winches, and hoists employ small electric motors.
