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（1） Maintenance of deep groove ball bearing-deep furrow ball bearing:
　　In order to keep bearing's natural performance as long as possible, you must maintain, examine and repair bearing to effectively prevent accident and assure running dependability, as well as increase productivity and economy.
　　You'd better periodically carry on maintenance according to operation standard of mechanical operating requirements. Maintenance contains monition of operating state, supplement or changing of lubrication and periodical check of dismantlement.Checking items during operating include rotator tone, vibrations, temperature, and lubrication of bearing, etc.

（2） Operation of deep groove ball bearing(deep furrow ball bearing):
　　Operation Notes: Rolling bearing is precision components, operating should be cautious. No matter how high the bearing performance is, if it not be used appropriately, you cannot approach the desired high performance. The notes of bearing are as bellowing.
<1>.keep bearing and its environment clean
　　Even the small dust naked eyes cannot see can also bring bad influence to bearing. Thus, keep the environment clean and free from dust intrusions.
<2>.Cautious use
　　 Give strong impact to bearing. When it is running it can result to bruise and dent. In worse situation, it will generate crack, fracture. So, you must be careful.
<3>.Using appropriate operating tool
　　Avoid using existing tool and must use appropriate tool.
<4>.Taking care bearing's corrosion
　　When operating the bearing, the perspiration on your hand can be the reason for bearing's corrosion. So you must pay attention to using dry and clean hands when operating. You‘d better possibly wear gloves.

（3） Bearing's hurt and countermeasure:
　　Bearing's Hurt: In most case, if you correctly operate bearing, it can be used as long as its life. But there can be accidental case that bearing be hurt too early and cannot be durable. This case, corresponding to fatigue life, is so-called false or accidental quality using limit, which mainly result from carelessness in installation, use, lubrication, as well as lack of analyze of the influence coming from outside invasion to axis and out cover.
　　Referring to bearing's hurt state, ferrule of bearing roller and extrusion hurt of apron can be the reason. Lacking lubricant, not appropriation, deficiency of fabrication of oil apply, intrusion of foreign matter, installation error of bearing , too large curving of bearing can also be the combined reason.
　　Therefore, you cannot find out the real reason by only checking bearing hurt . But if you know bearing‘s setting up, service conditions, surrounding structure and the situation before and after the accident, combined with bearing's hurt state and several reasons, you can prevent the same accident from happening again.