Mecatraction motor Germany Mecatraction model Mecatraction price

Mecatraction motor refers to a motor that can operate on both DC and AC power supplies. This type of electric motor is widely used in daily household appliances, manual devices, computing tools, and precision machinery. In addition, this type of motor is frequently used in medical equipment, communication technology, measurement technology, the film industry, and many other fields.

Mecatraction motor classification

Motors are divided into three basic types: electromechanical, magnetoelectric, and linear. Electromechanical stepper motors consist of an iron core, coils, gear mechanisms, etc. When the solenoid coil is energized, it generates magnetic force, pushing its iron core armature to move. The output shaft rotates by an angle through the gear mechanism, and the output rotating shaft is held in the new working position by an anti-rotation gear; when the coil is energized again, the rotating shaft rotates by another angle, performing step-by-step motion in sequence. Magnetoelectric stepper motors have a simple structure, high reliability, low price, and wide application. They mainly include permanent magnet, variable reluctance, and hybrid types. The rotor has permanent magnet poles, generating an alternating polarity magnetic field in the air gap, and the stator consists of four-phase windings. When the A phase winding is energized, the rotor turns toward the magnetic field direction determined by that phase winding. When the A phase is de-energized and the B phase winding is energized and excited, a new magnetic field direction is generated. At this time, the rotor rotates by an angle and aligns with the new magnetic field direction. The sequence of the excited phases determines the direction of rotor rotation. If the change in stator excitation is too fast, the rotor cannot keep up with the change in the stator magnetic field direction, resulting in step loss. Low starting frequency and operating frequency are disadvantages of permanent magnet stepper motors. However, permanent magnet stepper motors consume less power and have higher efficiency. In the early 20s and 80s, disc-type permanent magnet stepper motors with disc rotors appeared, bringing the step angle and operating frequency to the level of variable reluctance stepper motors.

Mecatraction motor classification

Motor classification. (1) Large motors refer to motors with a frame center height greater than 630mm. (2) Medium-sized motors refer to motors with a frame center height between 355 and 630mm. (3) Small motors refer to motors with a frame center height in the range of 80-315mm. Two Classification by motor speed: (1) Constant-speed motors include standard squirrel-cage, special squirrel-cage (deep-bar, double-cage, high starting torque), and wound-rotor types. (2) Speed-regulating motors are motors equipped with commutators. (3) Variable-speed motors include pole-changing motors, single-winding multi-speed motors, special squirrel-cage motors, and slip motors. Three Classification by mechanical characteristics: (1) Standard squirrel-cage asynchronous motors are suitable for low-capacity applications with small slip variation and constant-speed operation, such as blowers, centrifugal pumps, and lathes, where low starting torque and constant load are required. (2) Deep-bar squirrel-cage motors are suitable for medium-capacity applications requiring a starting torque slightly higher than that of standard squirrel-cage asynchronous motors. (3) Double-cage asynchronous motors are suitable for medium and large squirrel-cage rotor motors. They provide higher starting torque but slightly lower maximum torque. They are suitable for constant-speed loads requiring high starting torque, such as conveyor belts, compressors, crushers, mixers, and reciprocating pumps. (4) Special double-cage asynchronous motors are made of high-impedance conductor materials. They feature high starting torque, low maximum torque, and higher slip, enabling speed regulation. They are suitable for equipment such as punch presses and cutting machines. (5) Wound-rotor asynchronous motors are suitable for applications requiring high starting torque and low starting current, such as conveyor belts, compressors, and rolling mills. Four Classification by motor protection type: (1) Open-type motors have no specific protection for rotating and live parts, except for necessary supporting structures. (2) Protected-type motors have necessary mechanical protection for rotating and live parts, without significantly obstructing ventilation. Depending on the ventilation opening protection structure, there are three types: mesh-covered, drip-proof, and splash-proof. Drip-proof differs from splash-proof; drip-proof prevents vertically falling solids or liquids from entering the motor interior, while splash-proof prevents liquids or solids from entering the motor interior from any direction within an angle of 1000 degrees from the vertical. (3) Enclosed-type motor housings prevent free exchange of air between the inside and outside of the housing, but do not require complete sealing. (4) Waterproof-type motor housings prevent water under certain pressure from entering the motor interior. (5) Watertight-type motor housings prevent water from entering the motor interior when the motor is submerged in water. (6) Submersible motors can operate in water for extended periods under specified water pressure. (7) Explosion-proof motor housings prevent internal gas explosions from propagating to the exterior and causing ignition of flammable gases outside the motor. Five Classification by motor operating environment: general purpose, tropical humid, dry heat, marine, chemical, high-altitude, and outdoor types.

Mecatraction motor installation

Before motor installation, measure the insulation resistance between the stator winding and the frame, as well as between the main winding and the auxiliary winding. The resistance value at ambient temperature shall not be less than 10M Ω; otherwise, the windings should be dried, for example, using the lamp heating method. The shaft extension diameter is machined to standard tolerance dimensions at the factory. Therefore, users must select pulleys or other mating parts with inner diameters conforming to national standard accessories. During installation, push in by hand or gently tap the shaft extension end. Do not strike heavily with a hammer, as this may vibrate and break the centrifugal switch, causing motor start-up failure, bearing damage, and increased motor operating noise. Before installing the motor onto the driven machinery, carefully inspect the motor feet for cracks or issues affecting mechanical strength. If any problems are found, installation and use are prohibited. The motor must be installed on a flat plate with fixing holes and secured with bolts matching the foot holes. To ensure safety, before operating the motor, connect the grounding wire to the motor's grounding screw and ensure reliable grounding. The grounding wire shall be a copper wire with a cross-sectional area of not less than 1m mm². Use a time relay to replace the centrifugal switch. The centrifugal switch used in single-phase asynchronous motors is a mechanical switch. When the motor speed reaches more than 70% of the rated speed, the contacts open to disconnect the auxiliary winding (starting winding) or the starting capacitor from operation. If the centrifugal switch is damaged or if low rural voltage frequently burns out the starting capacitor, a delay relay (220V type) can be used instead. Connect the two wires from the internal centrifugal switch together, and insert the normally closed contacts of the delay relay in series externally. To enhance contact durability, connect multiple sets of contacts in parallel or add an intermediate relay. The power supply for the time relay coil can be connected in parallel with the main winding, and the action time adjusted to 2~6s. Practical experience shows good results, avoiding starting capacitor burnout even under low rural voltage conditions, leading to high user satisfaction.

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