Common types of bearings:
Tapered roller bearing: Capable of bearing radial and axial combined load, suitable for heavy load cutting.
NN double-row cylindrical roller bearing: high rigidity, high precision, suitable for occasions requiring extremely high rotating accuracy.
Deep groove ball bearing: mainly bearing radial load and used for auxiliary support.
Common faults and maintenance suggestions:
1. Bearing burned (most common)
Cause: improper play, poor lubrication and tight fit
Prevention: strictly control the installation clearance to ensure sufficient lubrication
2. Loss of accuracy
Cause: wear caused by long-time heavy load
Prevention: regularly check the runout of the main shaft and replace it in time
3. Abnormal sound and vibration
Cause: bearing fatigue or damage
Prevention: regular auscultation and vibration measurement
