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Picture a bearing with balls between the inner and outer surfaces (called races). Traditional bearings use steel balls, either loose between the surfaces or sealed within some sort of container. Modern hybrid ceramic [sealed bearings] have ceramic balls inside steel races. Full ceramic bearings have the inner and outer races also in ceramic. The more ceramic components in a bearing, the greater the cost, but there are some advantages.

High quality lithium grease lubricated sealed bearings use specially tested. This grease can withstand the high temperatures of 120 degrees short time. If a stable working temperature reaches 70 degrees or higher, standard lithium grease life will be shortened.

If you are using a high temperature synthetic material is sealed, then also consider this very effective fluoride material in more than 300 degrees, to emit harmful health gases and smoke. Especially demolished tapered roller bearings to use a welding torch, but also to pay attention to this.

1. Tapered roller bearings bear the load capacity is much smaller than the same volume of the sliding bearing, therefore, the radial dimension of its Rolling. Withstand large loads of occasions and small radial size requirements, structural requirements for compact occasion <such as an internal combustion engine crankshaft bearings>, the use of sliding timken bearings.

2. Bearing vibration and noise, especially in late will emerge. Therefore, high precision bearing requirements, Xu Youzhen without moving occasion, generally used in plain bearings better.

3. Tapered roller bearings are particularly sensitive to foreign matter such as metal shavings, once mixed foreign matter, it will produce a relatively large vibration and noise of the intermittently, easily lead to damage. So there are certain limits in the life of a rolling bearing. In summary, like the life of fag bearings than plain bearings shorter