What are the reasons for radial force imbalance of hydraulic universal testing machine

I believe many people are using itHydraulic universal testing machineOften encounteredThe problem of radial force imbalance,Let’s talk about the reasons for the radial force imbalance of the gear pump of the hydraulic system of the hydraulic universal tester:
, the radial force generated by the oil pressure of the hydraulic system of the hydraulic universal test machine. This is because when the gear pump is working, the oil pressure of the oil discharge chamber is higher than the oil pressure of the oil suction chamber, and there is a radial gap between the tooth top circle and the inner surface of the pump body, and the oil will leak through the gap. Therefore, the oil pressure between each tooth from the oil discharge chamber along the outer edge of the gear to the oil suction chamber is different, and the pressure decreases in turn.
Second, the radial force generated when the gear pump transmits torque, which can be proved by the early wear of the passive bearing. The direction of the radial force passes through the meshing line of the gear, reducing the combined force of the active gear and increasing the combined force of the passive gear.
Third, the radial force generated by the oil pump trapped oil has aggravated the radial force imbalance of the gear pump of the hydraulic universal test machine.

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