Bearing Wear: Combining the characteristics of the printing press, roller bearing wear mainly in the following several reasons.
1. Fatigue wear normal business
Will have any bearing fatigue wear, have a certain life, so wear roller bearing is also quite normal, everyday operation of the plant as a long time presses, so 5 years after operation, roller bearings on there beyond the normal permissible wear.
2. Long-term excessive printing pressure
Printing process, some operators to make the printing ink graphic layout of some more solid, like the use of thick pads of paper, so to invisibly printed on the increased pressure also increases the load-bearing roller bearings force, accelerated wear and tear.
3. Poor lubrication
bearings lubricated with abnormal wear a large extent, related to poor. The main purpose of lubrication is to make lubricants mutual friction between the metal surface of a dense layer of protective film, reduces the friction between each other, delaying the progress of wear. So when poor lubrication pipe or use an incorrect manner and poor lubrication lubricant, the bearings are directly accelerated wear.
4. Tilt the machine level
In the equipment maintenance process easy to overlook the situation regularly check the level of press. When the equipment installed to run some time, because due to vibration or foundation may make a good machine to adjust the original deviation in the horizontal direction. If the deviation is too large, it will make the work of roller bearings in a tilted position, it will increase the bearing axial force, to accelerate wear and tear.
Dispute handling and regular maintenance should be:
When the roller bearings wear, the beginning stage can also be thick pad of paper approach to maintain the quality of newspaper printing. However, severe wear, the best solution is to replace the bearings in time to avoid wear and tear after the impact further increase the quality of newspaper printing and other components. The replacement of roller bearings, you need because careful analysis of wear and tear, to determine whether the case of non-existence of normal wear and tear. Such as newspaper rotary offset printing press factory UNISET roller bearings three times a period of time frequent needle bearings rust knocked prints in roll trail the fault phenomena. The check revealed that the structure of roller bearings,
Three times bearing in the side wall inside the ring is not installed. When the operator daily scrubbing rubber rollers would often splash cleaning fluid on the wall, then slowly infiltrated three times cleaning solution needle roller bearings, the failure to rust. So will three times inside the ring bearings installed in the wall inside the exchange side, to prevent the infiltration of cleaning fluid. Practice shows that this method works well, is basically similar to the failure again.
In the analysis of the causes roller bearing wear after the routine maintenance work, should pay attention to regularly check on the roller bearings. First of all, you can check the machine to determine whether the standards of working conditions of machine. Under normal circumstances the system checked every year. As long as the fitter level on the base drum, the rotating drum, measuring a few points more comprehensive measure of the degree of axial bribe level should not exceed 0.06mm / m, the longitudinal vertical plane of reference should not exceed the level of degree of 0.1mm / m, Second, check whether lubrication problems. Check whether the machine lubricant requirements
Should be used with extreme pressure and anti-wear additives in lubricants. Usually should be strictly in accordance with the "machine operating instructions" and called for regular fuel, lubricants should pay attention to the preservation, not so contaminated.
The use of grease lubrication of roller bearings, if you do not use auto-focus for the way fat, you need a hand on a regular basis to add grease to the injection nozzle. But note that one should not add too much, just use common oil spray gun can be 3 to 4 under. Face gear drive lubricants inside the oil sample should be collected regularly sent to oil suppliers and check their active ingredients and impurities do not meet the requirements should be immediately replaced. Finally, the adjustment of printing pressure. Too little pressure will make the layout of the printed graphic is not real, but too much pressure on the same printed page will be to impact, but the main drum bearings will withstand greater radial force,
Thus speeding up the rate of wear of roller bearings to reduce its normal life. Therefore, the appropriate balance between print quality printing pressure and roller bearing life an important part of the relationship between the two.