Failure analysis of sliding bearings

In the cement plant machinery and equipment in the sliding bearing mainly have copper tile, pasteurized alloy tile, phenolic resin tile, sliding bearing the main form of failure are heat, abnormal wear, burning tile. Sliding bearing failure form and scraping tile way and the corresponding lubrication mechanism has a close relationship.

General cement plant sliding bearing tile are scraped according to the wedge lubrication mechanism. Possible causes of heat roughly new tile replacement has not been completely broken in or run after a period of time due to bearing load suddenly changed, after a short period of adjustment the problem disappeared, in the discovery of tile overheating to closely monitor the tracking and do not rush to other processing operations.

Bearing abnormal wear will lead to the occurrence of a variety of mechanical failure, so abnormal wear should be given a high degree of attention, the occurrence of abnormal wear is nothing more than bearing sliding bearing tile load is seriously over the standard or sliding bearing tile mixed into the hard particles, burning tile is no lubrication state, sliding bearing tile dry wear caused by bearing scrap damage, once the burning tile in addition to replacement or re-scraping tile outside no other repair methods.

Cement machinery and equipment bearings and failure prevention and handling methods, bearing lubrication, whether rolling bearings or sliding bearings, lubrication is the normal operation of bearings and extend the service life of the key link. Bearing in the installation and use of the process must choose high-performance lubricant uninterrupted lubrication of the bearing, should be brought to attention is due to the special nature of the cement production chain, the environment often have some hard foreign matter, in the lubrication operations, must be cleaned up the surrounding environment, to prevent the lubricant in the entrapment of some hard foreign matter into the bearing, thus bringing abnormal wear on the operation of the bearing The hidden danger of the bearings.

Bearings in machinery and equipment belong to the wearing parts, have their corresponding service life, in the bearing installation to do a good record, when the scheduled use of the bearing into the period of intensive testing, ready to replace. A perfect monitoring system should be developed in the usual use process, and the hidden problems of bearings should be found in time through detailed data such as bearing temperature, color, depth of friction groove, etc., so that the hidden problems can be eliminated at the primary stage. Choose the bearings of the type matching the strength of the demand, than and choose those bearings produced by qualified large brand manufacturers to ensure that their design parameters are reasonable, to avoid the selection of bearings with design defects and affect the normal service life of the bearings.

In the cement plant machinery and equipment bearings compared to other environmental bearings by the environmental corrosion is much more serious, which requires us to pay attention to minimize bearing corrosion in the bearing maintenance process, the bearing will be placed in as closed environment to prevent the inflow of material in the production process. After the discovery of the already corroded bearing, the liquid in the bearing should be immediately excluded to increase the airtightness of the bearing.

In the process of rolling bearing installation and replacement, the operating procedures of installation must be strictly enforced to ensure the balance of the bearing installation, as well as the correctness of the force point and the uniformity of the force. According to the importance of the first to correct the position of the bearing alignment, while ensuring that the installation process in the bearing jacket knocking the inner surface of the bearing jacket, and each force point balance advance, and then the installation direction of the angular contact bearing to maintain consistent.