1, paint rust prevention
The paint rust is characterized by multiple sealed-type motor, the motor sound good, but in the assembly and put in the warehouse for some time, remove the bearing of the motor abnormal sound becomes severe rusting. Many manufacturers will thought it was the subject of bearings, motor plant has now realized that the main subject of insulating paint, the subject is the formation of corrosive substances due to the the insulating paint out of the volatile acidic substances in a certain temperature, humidity, The bearing channel erosion lead to bearing damage. Asked title title can only be a good selection of insulating paint and assembly take the air after a period of time after drying.
Bearing life and manufacturing, assembly, use all closely related, it is necessary to do a good job in every aspect, only in the use of self-aligning roller bearings pay attention to these precautions, in order to make the bearing in the best operating condition, thus extending bearing life.
In order to be able to ensure that the bearing has been operating in good condition, schedule maintenance inspection is required in order to achieve the enterprise production efficiency and accident prevention and first place, progress, saving capital. Here to engage in conservation work of the professional bearing, it is necessary to have a scale homework process, including the operation state, lubricants, scheduled removal, noise, temperature, and so on a series of detection.
2, shaft and bearing tolerances choice and control
Flexible rolling bearings are pressed into the block sense. Any significant scrolling is not flexible, it indicates that the shaft size is too large, and tolerance should be lowered. Bearing pressed into the shaft by hand after rolling the significant "imperfections" in the sense, it may be too much tolerance of the shaft or shaft roundness bad. In good control of shaft and bearing tolerances should be controlled roundness.
3, the assembly to prevent foreign bodies
Bearing easily do balancing mounted to the rotor balancing iron filings into the self-aligning roller bearings internal, so it is best to do balancing mounted bearings. Some manufacturers in order to assembly to facilitate assembly in the bearing chamber coated with oil or grease from the lubricating effect, but often manipulate staff is difficult to control is good, if the oil or grease in the bearing chamber accumulates more in the bearing rolling very easy access to the interior of the bearing. The bearing is best not coated with oil or grease, such as non-coated not have to control not in the bearing chamber accumulates.
Spherical roller bearing materials metallurgical quality of the main factors affecting the move to bearing failure. Followed by metallurgy technology (such as bearing steel vacuum degassing, etc.) to improve the quality of raw materials is improved. Raw material quality factors bearing failure analysis in the proportion has decreased significantly, but it is still one of the main factors bearing failure. Appropriateness of the selection is still necessary to consider the factors bearing failure analysis.
The main task of aligning roller bearing failure analysis is based on a lot of background material, analysis of data and failure modes to identify the main factors that cause bearing failure, in order to suggest improvements to extend bearing service life, avoid bearing A sudden early failure has occurred.