Bearing fatigue failure is a failure of the surface in the form, mainly as a fatigue crack initiation, propagation and fracture process, alternately under the long-term impact of the failure load of metal.

The tapered roller bearing using a glass fiber reinforced nylon 66 manufactured holder applies to the steady state of the working temperature does not exceed 120 degrees, the use of oil lubrication of this bearing, if the oil contains an additive, may result in shortening the life of the holder. When the temperature exceeds 120 degrees, the aging of the lubricant can also shorten the life of the holder. It should be observed and scheduled replacement of oil.double bearing

High quality lithium grease lubricated sealed ball 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 ball, then also consider this very effective fluoride material in more than 300 degrees, to emit harmful health gases and smoke. Especially demolished tapered roller ina 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 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 fag 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 bearings than plain bearings shorter

Bearing replacement is usually the domain of professional bike mechanics and while it is still possible to do it yourself, you need to be confident in your understanding of hubs, as it is fairly easy to make a mistake. For this review, Aaron Dunford of Fusion Peak was bought in to be ‘the expert’; he brings years of experience as a bicycle mechanic and wheel builder to this investigation. On top of this, Aaron is also test riding the "sealed ball bearings" which are going into his Bontrager MTB wheelset.