What are the methods for repairing hydraulic pumps? Next, Kunshan Chuanna Hydraulic Fittings Co., Ltd. will introduce you to the repair methods for hydraulic pumps.

2025-09-19

What are the methods for repairing hydraulic pumps? Below, Kunshan Chuanna Hydraulic Fittings Co., Ltd. introduces the repair methods for hydraulic pumps.

In hydraulic systems, hydraulic oil serves as the working medium for transmitting power and signals, while also functioning as a lubricant, coolant, and rust preventative. The effective and reliable operation of a hydraulic system largely depends on the performance of the hydraulic oil used in the system. Therefore, before mastering hydraulic systems, it is essential to have a clear understanding of hydraulic oil. In hydraulic systems, hydraulic oil should meet the following requirements:

1. Proper viscosity with small changes in temperature: If the viscosity of the working medium is too high, the system will experience greater pressure loss, reduced efficiency, and deteriorated oil suction conditions of the pump, which can easily lead to cavitation and erosion, making it difficult for the pump to operate. If the viscosity of the working medium is too low, the system will leak excessively, increasing volumetric losses and reducing system efficiency, as well as weakening the rigidity of the system. In addition, due to seasonal changes and during the startup and normal operation of the machine, the temperature of the working medium will vary. Therefore, to ensure the hydraulic system can operate normally and stably, it is required that the viscosity of the working medium changes minimally with temperature.

2. Good lubricity: The working medium lubricates various moving components in the hydraulic system to reduce friction and ensure long-term normal operation of the system. In recent years, hydraulic systems and components have been developing towards higher performance, and many friction parts are in a boundary lubrication state. Therefore, the hydraulic working medium is required to have good lubricity.