Solve the IKO bearing burn to maintain attention points - bearing knowledge
IKO bearing in the operation of inspection is very important, can not be ignored, check the main bearings of rolling noise, vibration, temperature, lubrication condition and so on.
We will start with simple introduce bearing rolling, the size of the rumbling and quality check sound device should be used for inspection of auto bearing in operation, with advanced tools can accurately judge the problem, bearing even with slight stripping damage, such as would an exception and irregular, and with the sound of the measuring device can distinguish.
Then IKO bearing vibration test to check the bearing damage is very sensitive, peeling, indentation, rust, crack and wear will be reflected in the bearing vibration measurement, therefore, through the use of special auto bearing vibration measuring device (
Frequency analyzer, etc. )
Can measure the size of the vibration, through frequency points cannot deduce the abnormal situation.
However each machine measured values for bearing or sensor installation position and different using conditions, thus requiring prior to each machine is analyzed by the measured value of the determined after judgment standard.
IKO bearing parts in use under the influence of abnormal high temperature, cooling, without timely and will generate a high temperature tempering parts surface organization or secondary hardening phenomenon called burns.
Burns, the main reason is poor lubrication, neck too much load, improper clearance improper selection, bearing configuration, raceway surface contact undesirable, such as stress caused by a cold.
In swimming axial bearing, if the external fit too tight, cannot move in casing hole;
Bearing in operation temperature, thermal expansion of the shaft causes large axial force, and the bearing can't axial movement;
Due to insufficient lubrication, or lubricant selection is not reasonable, quality problems, such as aging and deterioration;
Operation of internal cause and external cause temperature difference is big, improper selection and clearance external cause expansion of small internal cause big show interference lead to bearing temperature rise sharply;
IKO bearing load is too large and uneven distribution of cutting load, the formation of stress concentration;
Rough machining parts surface, resulting in poor contact or oil film forming difficulties.
Burn appearance characteristics can be judged according to the color of the surface of the small with.
IKO bearing in use due to reasons such as lubricant, temperature, corrosion, change parts surface, mainly with light yellow color, yellow, palm red, purple, blue and dark blue, light yellow, yellow, palm red chips in color (
See the related content)
, if appear purple blue or bluish black action for burns.
Burns easily cause the loss of parts surface hardness or a tiny grain.