Spindle motor repair and maintenance
   1, retainer ring, "hey, hey..."
Cause analysis:
Produced by the vibration and impact of retainer and rolling element, no matter what types of grease are possible, torque, load or radial clearance under more prone to big
The solution:
   A, improve the accuracy of retainer
   B, choose the bearing clearance small or the bearing preload
   C, to reduce the torque load, reduce the installation error
   D, choose good fats
   2, continuous hum hum..."
Cause analysis:
The motor no-load running is similar as the buzzer sounds, and abnormal axial vibration motor, open or shut down "om-ing" voices
The specific features:
Multiple lubrication condition is bad, and in the winter of the ball bearing motor, main shaft is self-aligning performance is bad, under the influence of the axial vibration of an unstable vibration
The solution
   A, use the grease lubrication good performance
   B, preload, reducing installation error
   C, choose bearing radial clearance is small
   D, improve motor bearing rigidity
   E, strengthen bearing so
Note: in the first five have the effect of fundamental improvement, using small groove curvature, 02 01 big groove curvature.
   3, paint, rust
Cause analysis:
Because the motor bearing chassis paint dry after oil, the chemical composition of volatile out corrosion of end face and outside groove bearings and channel, the channel is corrosion occurred after the abnormal sound
The specific features:
Corroded after bearing surface rust than the first one side is more serious
The solution:
   A, the rotor, chassis, dry or drying after assembly
   B, to reduce the motor temperature
   C, choose model adapt to paint
   D, the improvement of motor bearing placed environmental temperature
   E, with oil, fat cause less corrosion, silicone oil, mineral oil, the most easy cause
   F, the varnished vacuum technology
   4, impurity
Cause analysis:
Caused by the purity of the bearing or grease, the abnormal sound of an irregular
The specific features:
I have no my voice, when big small without rules, are on high speed motor
The solution:
   A, choose good fats
   B, to improve cleanness of greasing before
   C, strengthening the bearing sealing performance
   D, improve the purity of the installation environment
   5, high frequency, vibration sound "man..."
The specific features:
Sound frequency change with bearing rotating speed, and the parts surface waviness is the main cause of the noise.
The solution:
   A, improve the quality of bearing raceway surface processing, reduce waviness amplitude
   B, reduce bruising
   C, fixed clearance and cooperate with the prestressing force, check the free end bearing operation, improve the precision of the shaft and bearing installation method
   6, warming
The specific features:
Bearing after operation, the temperature is beyond the scope of requirements
Cause analysis:
   A, too much grease, lubricant resistance increased
   B, the clearance is too small to cause the internal load is too large
   C, installation error
   D, friction sealing equipment
   E, bearing the crawl
The solution:
   A, choose the correct grease, appropriate dosage
   B, correct clearance pre-tightening force and cooperate, check the workings of the free end bearing
   C, improve the accuracy of bearing seat and installation method
   D, improvement of sealing form
   7, bearing feel bad
The specific features:
Hand feel when he held a bearing rotating rotor bearing inside impurity, block
Cause analysis:
   A, clearance is too large
   B, inner diameter and axial mismatch
   C, channel damage
The solution:
   A, smaller clearance as soon as possible
   B, the selection of tolerance zone
   C, improve accuracy and reduce the channel damage
   D, selection of grease