How Should Bearings Be Cleaned?

Bearing as an important mechanical parts, widely used in the living environment.  An important indicator of bearing quality is bearing cleanliness. It is necessary to carry out effective cleaning of bearings in the process of production and use to prolong their service life.

Many friends know that the vast majority of newly bought bearings are coated with grease, but the grease is mainly used to prevent the bearing from rust, and does not play a lubrication role, and bearings are particularly easy to hide dirt, generally difficult to clean thoroughly.  Even if you buy bearings without lubricating oil, for a long time, they will absorb dust due to magnetism and airflow.  Then mixed sweat, water vapor and so on in the bearing, between the ball, the gap gathered to form a "dirt community", which is "fatal" to the bearing rotation.  

If the bearing is used for a long time, it will contact with dust, oil or water in the air, causing the bearing to dry out, rust and affect the operation.  At this time, bearing cleaning is very important.

How to clean bearings correctly  

When disassembling the bearing for maintenance, first record the appearance of the bearing, confirm the residual amount of lubricant, sample the lubricant used for inspection, and then clean the bearing.  

The selected cleaning agent, generally speaking, the rust prevention oil sealed on the bearing, can be cleaned with solvent cleaning agent.  If there is thick anti-rust oil on the bearing, you can first use metal parts solvent-based oil cleaning agent, dissolve and clean properly, remove the rust oil on the surface after it is dissolved, and then wipe it.  

When cleaning, one hand should hold the inner ring of the bearing, and the other hand should slowly turn the outer ring, until the rolling body of the bearing, the raceway, and keep the oil on the shelf completely washed off, and then clean the surface of the outer ring of the bearing.  

At the beginning of cleaning, turn slowly and shake reciprocating, and do not rotate too hard, otherwise the raceway and rolling body of bearings are easy to be attached to dirt.