oilless bearing repair and fault identification
In order to keep the oilless bearing full and to maintain its proper function for a long time, it is necessary to ensure the maintenance of regular protection (check regularly).
Through proper time checking, the early detection of the problem, avoiding the accident, the progress productivity and economy are very important.
When the oilless bearing is removed and viewed, it is used to record the appearance of sliding bearing. Other, recognize the amount of lubricant remaining and sample the lubricant and then clean the oilless bearing.
A, oilless bearing's clean and coarsely washed aluminum base steel ball retaining ring and fine washing, and can be placed on the bottom of the container bronze set with a metal mesh frame.
B. remove grease or adhesives at the top of the oil when washing. Now if you roll oil in oilless bearing, pay attention to the damage of the surface due to foreign matter.
C, in fine wash, slowly roll oil without oil bearing in oil, must carry on carefully.
The commonly used cleanser is neutral and non-water diesel or oil, according to the demand sometimes also use the warm lye. No matter what kind of cleaner you use, always filter and keep clean.
After cleaning, immediately coating the oilless bearing with anti-rust oil or anti-rust grease.
2. Check and check
In order to check whether the oil bearing without oil bearing can be used from the beginning, the scale precision, rotation precision, internal clearance and cooperation surface, rolling surface, cage and sealing ring should be reviewed.
In view of the results, it can be used to identify the bearers without oil bearing or oil bearing.
The criteria for judging are different depending on the mechanical function and the main degree and the viewing period. If any of the following damage is done, the oilless bearing shall not be used from the ground, and shall be replaced.
1) cracking and defect of oil bearing parts.
2) strip off the roll surface.
3. The identification method for oil bearing without oil bearing
It can be recognized or speculated that there is oilless bearing in the operation, and it is very important for improving productivity and economy.
The main identification methods are as follows:
1) recognition by sound
There is a rich experience in identifying requirements by sound. It is necessary to be trained to recognize the sound of oilless bearing and oilless bearing sounds. For this purpose, it should be done by a special person. The sound of an oilless bearing can be heard clearly on the shell with a listening or listening stick.
2) identify the operating temperature
The method is a comparative identification method, which is limited to situations where the operating conditions are not too changeable. There is a need for a series of records of temperature. When the fault is present, not only the temperature rise, but also the irregular change.
3) be identified by lubricants
oilless bearing is used to analyze the sampling of lubricants and check whether it is mixed with foreign body or metal powder. This method is especially useful for oilless bearing or large oilless bearings that cannot be observed.
4. Near the static friction coefficient, it can eliminate the creeping at low speed, and then ensure the mechanical working accuracy.
5. It can reduce vibration, reduce noise, avoid pollution and improve working conditions.
6. The oilless bearing can be used as a moving film in the operation process to maintain the effect of the grinding shaft.
7. oilless bearing is required for the hardness of the grinding shaft, which can be used without the adjustment of the shaft, and then reduces the processing difficulty of the parts.
8. Thin wall structure and light weight can reduce the mechanical volume.