一、The spindle has been broken or bent

Reason: 1. The deviation between the concentricity and the horizontality of each supporting bearing is too large, so that the local stress of the shaft is too large, and the fatigue is broken repeatedly;
2. Frequent overloading and heavy-duty impacts cause the shaft to be partially stressed and bend.
3, processing and assembly quality does not meet the requirements
4, poor material or fatigue

Solution:1, adjust the concentricity and levelness
2, prevent heavy load shock
3, ensure processing quality
4, replace the required material

二、The gear has abnormal noise and excessive vibration

Reason: 1. The gear assembly meshing clearance is excessive or the pitting is severely peeled off.
2, the axial volume is too large
3, the horizontal and parallelism deviation of each axis is too large
4, The bearing bush clearance is too large.
5, the key is loose
6, the gear wear is too large

Solution:1. Adjust the gear meshing clearance, limit the load, and replace the lubricating oil.
2, adjust the amount
3. Re-adjust the level and parallelism of each axis
4, adjust the bearing clearance or replace
5, fastening keys or replacement keys
6, repair or replace the gear

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