NSK bearings, if there is no wrong choice as a deterrent to the proper use, prior to bearing life, can be used for a long time, in this case, the damage to split.
Damage State NSK: bearing loading when you rotate, inner ring, outer ring raceway surface or scroll a decent rendering fish squamous split due to rolling fatigue phenomena.
Cause: the load is too large. Installing bad (non-linear) torque loads intrusion of foreign bodies, into the water. Poor lubrication, lubricant not appropriate bearing clearance was not appropriate. Bad bearing box precision, rigidity of bearing box does not mean axis of deflection points of rust, corrosion, abrasions and indentation (surface deformation phenomena) caused by development.
Measures: check the size of the load and again the Institute uses improved installation methods improvement of sealing device of NSK bearings, outage rust. Use appropriate lubricant viscosity, improve lubrication method. Check the accuracy of the shaft and housing. Check the clearance.
According to role in NSK bearing load direction, nature and inner and outer rings which rotate, rotate the load borne by each ring can be divided into variable load and static load or load. Rings under rotating load and adventitious to load should quiet compatible with (interference) to withstand the static load of the rings, desirable transition fit or to complement (clearance).
NSK bearing load or when subjected to vibration and shock loads, their interference increases. Box or light alloy thin-walled hollow shafts, bearings, plastic bearings box, also have to increase the amount of interference.
You are requested to maintain high rotation, shall be in high-precision bearings and improve dimensional accuracy of the shaft and bearing boxes, avoid excessive interference. If the interference is too large, may leave the geometric shape of the shaft or housing precision bearing geometry, to the detriment of NSK bearings running accuracy.
Non-separable bearings (such as deep groove ball bearings), inner and outer rings are static tie, NSK bearing installation and removal of great inconvenience, it is best to one side of the inner and outer rings tie.


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