VIBRA MASCHINENFABRIK motor Germany VIBRA MASCHINENFABRIK model VIBRA MASCHINENFABRIK price

VIBRA MASCHINENFABRIK 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 areas.

VIBRA MASCHINENFABRIK motor structure

The motor mainly consists of components such as the stator, rotor, and end covers. The stator is made by stacking laminations to reduce iron losses during motor operation, and it contains three-phase AC windings, known as the armature. The rotor can be made in a solid form or by pressing laminations, with permanent magnet materials mounted on it. Depending on the position of the permanent magnet material on the motor rotor, permanent magnet synchronous motors can be divided into two structural forms: surface-mounted and interior-mounted. Figure 1 shows the corresponding schematic diagrams. The magnetic circuit structure of the surface-mounted rotor is simple and has low manufacturing costs, but since starting windings cannot be installed on its surface, asynchronous starting is not possible. The magnetic circuit structures of interior-mounted rotors mainly include radial, tangential, and hybrid types, totaling 3 kinds. The main difference between them lies in the relationship between the magnetization direction of the permanent magnets and the rotation direction of the rotor. Figure 2 shows the magnetic circuit structures of 3 different forms of interior-mounted rotors. Since the permanent magnets are placed inside the rotor, the rotor surface can be made with pole shoes. Inserting copper bars or cast aluminum into the pole shoes provides starting and damping functions, resulting in good steady-state and dynamic performance. Additionally, due to the asymmetry of the interior-mounted rotor's magnetic circuit, reluctance torque is generated during operation, which helps improve the motor's power density and overload capacity. Moreover, this structure makes it easier to achieve field-weakening speed expansion.

VIBRA MASCHINENFABRIK motor precautions

Motor precautions: 1. Before disassembly, use compressed air to blow off dust from the motor surface and wipe away surface dirt. 2. Select a work location for motor disassembly and clean the site environment. 3. Familiarize yourself with the motor's structural features and maintenance technical requirements. 4. Prepare the tools (including special tools) and equipment required for disassembly. 5. To further understand defects during motor operation, if conditions permit, perform an inspection test before disassembly. For this purpose, run the motor under load, carefully check the temperature, sound, vibration, and other conditions of each part of the motor, and test voltage, current, speed, etc. Then disconnect the load and perform a no-load inspection test separately to measure no-load current and no-load losses, and keep records. 6. Cut off the power supply, remove the external wiring of the motor, and keep records. 7. Use a megohmmeter with an appropriate voltage to test the motor's insulation resistance. To compare with the insulation resistance value measured during the previous maintenance to judge the trend of motor insulation changes and insulation status, convert the insulation resistance values measured at different temperatures to the same temperature, generally converted to 75℃. 8. Test the absorption ratio K. When the absorption ratio is greater than 1.33, it indicates that the motor insulation has not been dampened or the dampness is not severe. To compare with previous data, also convert the absorption ratio measured at any temperature to the same temperature.

VIBRA MASCHINENFABRIK motor precautions

Motor precautions: 1. Before disassembly, use compressed air to blow off dust from the motor surface and wipe away surface dirt. 2. Select a work location for motor disassembly and clean the site environment. 3. Familiarize yourself with the motor's structural features and maintenance technical requirements. 4. Prepare the tools (including special tools) and equipment required for disassembly. 5. To further understand defects during motor operation, if conditions permit, perform an inspection test before disassembly. For this purpose, run the motor under load, carefully check the temperature, sound, vibration, and other conditions of each part of the motor, and test voltage, current, speed, etc. Then disconnect the load and perform a no-load inspection test separately to measure no-load current and no-load losses, and keep records. 6. Cut off the power supply, remove the external wiring of the motor, and keep records. 7. Use a megohmmeter with an appropriate voltage to test the motor's insulation resistance. To compare with the insulation resistance value measured during the previous maintenance to judge the trend of motor insulation changes and insulation status, convert the insulation resistance values measured at different temperatures to the same temperature, generally converted to 75℃. 8. Test the absorption ratio K. When the absorption ratio is greater than 1.33, it indicates that the motor insulation has not been dampened or the dampness is not severe. To compare with previous data, also convert the absorption ratio measured at any temperature to the same temperature.

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