Roller bearing accuracy and printing machines imported precision printing

In the printing press roller NSK bearing fault before, directly or indirectly, in operation and the products to be reflected, just did not cause our attention. Sometimes take increase roller bag line method, make printing pressure, printing ink distributed settled, but printing machine will therefore there are not represent more than 80% of the network level.

We meet the press roller of the bearing fault FAG roughly two kinds. One kind is supporting frame fracture, inner ring and outer ring track surface spalling and make the ball movement not free, cause mechanical lock, this kind of apparent fault, must be in after repair, printing machine to normal operation. In fact, this kind of failure is in serious mechanical arms before the death is already in another type of fault, or supporting frame, inner ring and outer ring track surface wear, this kind of fault performance is not obvious, the main influence printing quality, also is the printing press often not easy maintenance fault brought to people's attention, because the printing machine also can normal operation. In rolling process of paper printing, when fracture and winding roller tape, you will make entangled part of the stress increased suddenly, the lubrication failure, bearing partial damage, and increases the damage of bearing part clearance, cause printing uneven surface pressure. If long-term lubrication at half failure state, bearing inner ring and outer ring track surface will from long wear and make SKF bearing clearance serious increases, its usually appears as insufficient pressure printing, printing ink not divide evenly, field galling, serious when make prints, 30% of the network loss, more than 70% of the network paste nets.

 
Printer NACHI roller bearing caused by the fault, some can through the operation to get up, others can't from the operation to make up for, this is involved the need below what circumstance for roller bearing the problem of maintenance. Each printing machines in manufacturing factory, has its fixed printing precision index, such as network representation and precision of longitudinal, these indicators are we used to determine the foundation of printing quality. So observation prints, we can also determine printing machine run roughly what you are capable of printing accuracy, according to its can produce the precision demand prints, can judge whether out in its maintenance, that is described in this paper "roller bearings precise printing machine is the printing machine precision printing the principle of" place.



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