Bearing failure analysis to improve the working surface reliability of the system engineering is an important part of the bearing (the bearing's working function in its specified loss, causing failure or not working as a phenomenon of failure is called (bearing failure can be divided according to them) The normal life failure and two early failures, mainly for the analysis of the causes of early failure of the bearing caused by pitting and fatigue and suggest improvements to improve the life and reliability of TIMKEN bearings.

TIMKEN bearing fatigue failure It is a failure surface form, mainly characterized by fatigue crack initiation, expansion and fracture processes, and long-term effects of load failure under alternating metal.

Tapered roller bearings use glass fiber reinforced nylon The cage manufactured by 66 is suitable for the steady state of working temperature not exceeding 120 degrees. When the bearing is oil lubricated, if the oil contains additives, the life of the cage may be shortened. When the temperature exceeds 120 degrees, the aging lubrication Oil will also shorten the life of the cage. Therefore, observe and replace the lubricant as scheduled.

The sealed TIMKEN bearing is lubricated with a specially tested high quality lithium-based grease that can withstand temperatures of up to 120 degrees in a short period of time. If the stable operating temperature reaches 70 degrees or higher, the life of a standard lithium-based grease Will be shortened.

To work frequently at high temperatures, special greases must be used, and care should be taken to use heat-resistant materials as a seal. Standard contact seals should not be used for temperatures up to 110 degrees.

If a high temperature synthetic material is used for sealing, consider that this very effective fluorinated material will release harmful gases and fumes at temperatures above 300 degrees, especially when disassembling the tapered roller. This is especially important when using a welding torch for bearings.

1. Tapered roller bearings have a much lower load bearing capacity than sliding bearings of the same size, so the radial size of their rolling bearings is large. In the case of heavy load and where small radial size and compact structure are required (such as crankshaft bearings for internal combustion engines), sliding bearings are often used.

2. Bearing vibration The noise is large, especially in the later stage of use. Therefore, in the case where the precision bearing is required to be high and vibration is not allowed, the sliding bearing is generally better.

3. Tapered rolling The sub-bearing is particularly sensitive to foreign matter such as metal chips. Once foreign matter is mixed, intermittent vibration and noise are generated, which may cause damage. Therefore, the life of the rolling bearing has a certain limit. In short, the life of the TIMKEN bearing is shorter than that of the sliding bearing. Some.