Imported high-speed motor manufacturer: how to maintain the rolling bearings of a high-speed motor?

During the use of a high-speed motor, we should often check the bearing quality. Under what circumstances must the rolling bearings of a high-speed motor be replaced?

1. Abnormal noise from a high-speed motor may be caused by damaged bearings. The rolling bearing is a key component of high-speed rotation in a motor. Abnormal bearing noise is caused by a lack of oil in the bearing raceway. If the noise is somewhat loud, the bearing can still be used, but since the high-speed motor is working, the cooling water flow should be increased to improve the cooling effect; do not run it for long periods - after a period of work, stop cooling.

2. If the high-speed motor vibrates, do not use it normally. On one hand, it affects dimensional precision; on the other hand, motor vibration indicates that the bearing balls are significantly damaged and can easily damage the pillow block bearing. Moreover, if the motor keeps running normally under this condition, the rolling bearing may overheat easily, and the high temperature can cause the bearing to seize or even burn out the coil. When the motor vibrates, it must be used with great care.

Imported high-speed motor manufacturer: cooling methods for high-speed motors

When a high-speed motor works, high-speed rotation generates a lot of heat. If the heat is not properly dissipated, it will greatly affect the service life of the spindle, and the motor may be seriously burnt. Normal temperature rise is normal; if the heat is excessive, it will affect the motor performance and service life.

The high-speed motors in CNC engraving machines have two heat-dissipation methods: water cooling and air cooling.

During operation, the high-speed motor of a CNC engraving machine may overheat. The reasons are bearing damage, insufficient bearing lubricating oil, or bearings that are too tight. If the heat is caused by motor bearing temperature rise, replace or clean the motor bearings, or add appropriate grease. When cleaning the motor, gasoline is generally used: first rough washing, then fine washing, then evenly apply high-temperature grease and reassemble. If overheating is caused by too much bearing preload, check the front and rear bearings and adjust the shim clearance. Without the effect of an external lock nut, the axial clearance should be between 0.08 mm and 0.10 mm, then the lock nut can be tightened.

Imported high-speed motor manufacturer: how to choose a suitable high-speed motor?

1. If we pursue CNC engraving machine efficiency, we not only need high speed, but also more tools. For example, when machining solid wood, we need a high-speed motor with output power above 3 kW.

2. Whether the CNC engraving machine high-speed motor uses high-precision bearings - if not, the spindle motor will overheat after long high-speed rotation, affecting the motor service life.

3. Whether the woodworking engraving machine spindle runs at different speeds - especially at high speed, whether the noise is uniform and harmonious.

4. Whether the axial force of the CNC engraving machine high-speed motor is increased - the key reference is whether materials with hard grain can be cut at high speed. Some spindle motors must cut hard materials at extremely low speed, otherwise the motor performance will be seriously degraded, and after a period of time the spindle precision will be affected, or even faults will occur.