Detachment of NSK bearing damage is in load bearing rotates, inner and outer ring raceway surface or rolling face present designed stripping phenomenon due to the rolling fatigue.
Bearing the cause of the present stripping damage are: bearing load is too large;
Smooth bearing bad or choose inappropriate smooth agent;
Device adverse, torque load, foreign invasion, or water;
Bearing housing for the low precision, the uneven rigidity of shaft deflection of bearing box;
Rust, corrosion, scratch and indentation.
Preventive measures: check NSK bearing load and again for discussion by use of the size of the bearing;
Choose appropriate smooth agent, to improve bearing stop smooth, smooth way;
Improve device, strict according to device program stop device, improve the seal installation, when stop stop rust measures;
Check the shaft and the accuracy of bearing box, using high precision grade of bearing;
Check the bearing clearance, to make it right.
NSK bearings vibration influence on bearing failure is very significant.
For example, peeling, indentation, rust, crack and wear will be reflected in the bearing vibration test so through the use of special bearing vibration measurement installation (
Frequency profiler and vibration meter, etc. )
Can measure the size of the vibration through frequency distribution can be concluded that the detailed condition of the abnormal vibration measured values due to the use of the bearing premise or sensor installation position and different and therefore needs prior to the measurement of each machine stop after certain discriminant analysis compare measure value.
Increasingly motors at present, the application of fine bearing equipment, prompting NSK bearings used in smooth fat must have the following functions: (
1)
No and bearing the same operation life, maintenance cycle, delay as far as possible to shorten downtime, Labour production rate.
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2)
Is a dn> under the high speed of 5 x 105 to guaranteeing the motor temperature rise is low, don't jilt oil, thus reducing power consumption, shield machine.
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3)
The scalar content restraint is inevitable under the specification, the most earth cutting equipment noise pollution to the situation.
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4)
Is doing on the premise of guaranteeing the bearing cryogenic engineering starting and running of spirituality, NSK bearings common problems.
Guaranteeing the output power is minimal.
Tear open come down to the NSK bearings cleaning, rough washing and fine washing, respectively in the container, put a metal mesh bottom first, don't direct contact with dirt from the container.
Coarse when cleaning, assuming that spin the bearings with dirt, can damage the bearing rolling surface, should be pay attention to.
In coarse clean oil, use the brush clean up to grease, adhesive, after clean, roughly into fine cleaning).
