Date: 2013-08-20

NSK bearing lubrication purposes and methods

NSK Bearings in it, about its performance lubrication is an important key issues. Lubricant or lubrication will greatly affect the suitability of the bearing life.
The role of lubrication as follows:
A) the various parts lubricated bearings, reducing friction and wear
2) taken within the bearing due to friction heat generated, or other causes
3) the bearing rolling contact surfaces often form an oil film, extending bearing fatigue life
4) NSK Bearings rust and dust
Grease lubrication
Grease lubrication grease can be achieved after a long time without filling supplement, and its sealing device structure is relatively simple and therefore widely used.
Greased with pre-filled in the sealed bearing grease seals, and the filling amount of grease inside the housing, be supplemented or replaced from time to time for grease filling mode.
In addition, there are many NSK bearings require lubrication machinery, also adopted at the pipe connection to the lubrication grease for centralized way.
A) the amount of grease filling
Grease filling volume within the housing with the housing structure and volume vary, generally to the volume filling 1/3-1/2 appropriate.
Filling volume is excessive, grease deterioration occurs due to mixing heat, aging and softening, should be noted.
However, for low-speed bearings, in order to prevent intrusion of foreign matters, sometimes filled to volume 2/3-1.
2) Grease supplementary and replacement
Supplementary and replacement with grease lubrication have a close relationship, no matter what methods, you must use clean grease, and pay attention to prevent the intrusion of foreign matter.
Add grease should be day number for the same brand of grease.
Added grease, particularly important to ensure that the new grease into the bearings inside indeed.
Oil lubrication
Oil lubricated bearings suitable for high temperature and resistance to a certain extent, but also effectively reduce the vibration and noise are mainly used for grease lubrication occasions not applicable.
Oil lubrication can be divided into:
(1) Oil bath lubrication (2) drip lubrication (3) splash lubrication
(4) lubrication (5) spray lubrication (6) Oil mist lubrication
(7) oil lubrication

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