1, fixed voice, "Hey Lee Hey good......" analysis:
Fixed and rolling vibration, impact, regardless of how various types of oil may have to withstand torque, load, or radial clearance are more prone
Solution:
A, improving the accuracy of fixed
B, rolling bearing clearance or pre-load imposed a few
C, reduce torque load and reduce installation errors
D, choose good fats
2, continuous beep "hum ... ..."
Analysis:
Motor load-free operation is similar the same beep, or occurs abnormal vibration of motor shaft to turn off when the "OM" sound
As evidenced by:
Do not lubricate the ball well during the winter months, and with several bearings motor end, spherical spindle line poor performance, impact of unstable vibration under axial vibration
Solutions
A, with good grease lubrication performance
B increase the preload to reduce installation errors
C, with a small radial clearance of bearings
D to improve motor bearing steel
E strengthened bearings self-aligning
Note: the fifth to improve 02 minor Groove curvature, curvature dagou 01 used basic role.
3, anti-rust coatings
Analysis:
After painting the chassis because of volatile corrosion NSK bearings motor bearing outer face of the ditch and channel, chemical composition, river erosion occurs when an abnormal sound
As evidenced by:
Bearing surface is etched surface rust, more serious than the first
Solution:
A, rotor, enclosure, drying or drying Assembly
B reduce motor temperature
C use of models adapted for paint
D to improve temperature motor bearing placement
E, with a suitable oil, corrosion caused by less fat, silicone oil, mineral oil is most likely caused
F, vacuum impregnation process
4, sound impurities
Analysis:
FAG bearings or grease cleanliness is caused of issuing irregular noise
As evidenced by:
Sometimes even without the sound, different rules for free, multiple high-speed motor
Solution:
A, choose good fats
B improve lubrication before cleaning
C to improve the sealing performance bearings
D to improve installation, clean environment
5, high frequency sound and vibration "takh-takh ... ..."
Specific problems:
With the sound frequency variation speed SKF bearings, surface waviness is the part of the major cause of noise.
Solution:
A, improving NSK bearing Raceway surface quality, reduce ripple magnitude
B reduce scratches
C, with the proper preload and clearance, check the free-end bearing, bearings, shaft and the operation in order to improve the accuracy of installation methods
6, heated
As evidenced by:
Bearing operation, beyond the specified temperature range
Analysis:
A, too much fat, lubricants increase resistance
B, clearance is too small internal load too large
C, install error
D, the friction sealing equipment
E, bearing reptiles
Solution:
A, using the right oil, moderate
B, with the proper preload and clearance, check the free-end bearing operating
C, a method to improve the accuracy of rolling bearings and install
D, improved sealing type
7 bearings feel good
As evidenced by:
Rotate the rotor by hand are impurities, a sense
Analysis:
A, clearance is too large
B diameter and axial errors
C, channel damage
Solution:
A, the gap should be as small
B selection of Catholic
C, improving accuracy, reducing damage channel
D oil