The EDA bearing steel refining of its own, to ensure product quality in hardness  

                          
                         
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                    The outer packing design of bearing of authentic, color is very clear, and the bearing of authentic seal is often said ", is very clear.
Rotating bearings should be very smooth, no noise, also should not have impurities. The bearing is allowed in the work of the minor operation noise, if the sound is too loud or unusual noise or impact sound, then show that the EDA bearing failure. Bearing rust treatment with slight fragrance oil, and small amount of. The whole bearing clean aromatic.
Bearing with fine chamfering in horizontal plane and vertical plane junction, and has a black side.
If the EDA bearings using the process temperature is too high, can consider the lubricating oil quality meets the requirement or deterioration, lubricating oil viscosity is too high and other factors; or installation mechanism assembly too tight, preloaded bearing; bearing retainer or rolling body fragmentation.
Many causes noise rolling bearings, is one of the bearings, the mating surface wear.
Again, insufficient lubrication of the bearing, the formation of dry friction, as well as bearing broken produces abnormal sound. Again, insufficient lubrication of the bearing, the formation of dry friction, as well as bearing broken produces abnormal sound.
Grease lubrication is directly the lubricating grease is coated to the surface between the imported bearings. But to the raceway and the sliding surface input grease of the rolling bearing, must follow the following 5 principles:
(1) internal voids grease throughout the bearing surface and EDA bearing, so as to make full of grease lubrication.
(2) should retain a certain amount of grease on the working surface of the rolling bearing, and continued for some time, but also to prevent the loss of too much grease.
(3) grease input and discharge flow should be consistent with the requirements and the seal, which is conducive to the intrusion of dirt discharge.
(4) guaranteed good lubrication, to minimize the amount of grease.
(5) the export hole is arranged at the end of the grease flows, so that additional greases can crowd out the old grease, ensure good lubrication.