How to repair the bearing of Rexroth plunger pump

The position of the bearing in the Rexroth piston pump is very important. The bearing of the Rexroth piston pump affects other parts of the Rexroth piston pump. If the problem occurs in the bearing, it will cause failures on all sides. Therefore, in order for the Rexroth plunger pump to operate normally for a long time in the future, we must know how to repair the bearings of the Rexroth plunger pump to ensure the progress of the project.

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● Rexroth piston pump bearings

In the entire Rexroth piston pump, the bearing is the most important component. If the bearing fails, such as bearing wear and gaps, it will result in the failure to guarantee the normal clearance of the three pairs of friction pairs inside the Rexroth piston pump. It will destroy the thickness of the hydrostatic bearing oil film of each friction pair and reduce the service life of the plunger pump.

According to the analysis of the data provided by the Rexroth manufacturer, the service life of the bearing is generally about 10,000 hours, and some may reach 11,000 but some may only be 9000. For the safety of Rexroth plunger pumps, Autox’s recommendation is that it needs to be replaced as long as it exceeds 10,000 working hours.

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As for the dismantled old bearings, it is impossible to see whether there is any play by looking at the eyes alone, and only rely on professional testing instruments. If you can see scratches, unevenness and discoloration on the bearing with your eyes, it must be replaced. When replacing bearings, we must pay attention to the English letters and models on the bearings. Select the correct specification based on the letter model on the original bearing. Rexroth plunger pumps use large-capacity bearings for soybean bearings, so if you have this condition, Autos recommends that you buy the original manufacturer and specifications.

● Rexroth plunger pump bearing repair

If you ca n’t buy the original manufacturer ’s bearing, we must change to another brand. In this case, we should first search the professional bearing manual to replace it with the same performance, specification and model. The purpose is to maintain the accuracy level of the bearing And load capacity, so that the bearing will not cause failure due to specifications or other performance problems.

There is also a detection method that can roughly detect whether the bearings of the Rexroth plunger pump are worn. We can check the oil pump bearing and the clearance of the three pairs of friction pairs by turning the oil pump main shaft. The gap is too large. This condition may be due to friction pair wear or bearing wear. When disassembling and repairing, it can be solved by adding adjusting shims at the butterfly spring shims or adding shims at the bearing.


Post time: Jun-03-2020