The bearing failures of printing presses that we usually encounter are roughly divided into the following two categories.

One is that the support frame is broken, the track surface of the inner ring and the outer ring is peeled off, which makes the ball move poorly, causing mechanical lockup. This  is obvious problem that need to be  repaired before the printing machine can operate normally.

In fact, this type of failure already exists in another type of failure before causing serious mechanical lockup, that is, the track surface of the support frame, inner ring and outer ring. This type of failure is not obvious, and mainly affects the printing quality. The failure of printing press maintenance is often not easy to attract people's attention, because the printing press can still operate normally at this time. In the web printing process, when the paper tape breaks and is wound around the drum, the force on the wound part will suddenly increase, causing lubrication failure, partial damage to the bearing, increasing the clearance of the damaged part of the bearing, and causing printing uneven face pressure.

Then by observing the printed matter, we can also roughly determine the printing accuracy that the printing press can achieve. According to whether it can produce the printed matter with the required precision, we can determine whether to repair it. This is what this article describes The principle of "printing machine cylinder bearing accuracy is the printing machine's printing accuracy".

The other is that the prevention of printing machine roller bearing failure

By analyzing the failure of the printing press cylinder bearing, it can be seen that to prevent the loss of the printing press cylinder bearing accuracy, first select the type of lubricant used in the printing press and replace it in time;

 The tension system of the printing press must be maintained in a normal working state, and the tension system of the printing press must be maintained frequently to stabilize the tension output.

DAC  as one of the most professional cylindrical roller bearings manufacturers and suppliers, was featured by high quality bearings with different specifications and sizes and trobleshooting experts .