Generally speaking, the first few digits represent the type (such as whether it is a plunger or gears and so on, as well as the general structure)
Followed by the displacement, the oil port specifications, left and right, painting options and so on
Back to a sentence, look at the samples, but also a lot of manufacturers in the country, the material number is also borrowed to a certain degree of a few big brands, such as Rexroth, Parker, and so on, so you can find a sample. So the sample reference try to find the original, if not, you can also try to find a well-known brand of sample reference.
The need for samples can be pursued
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