Chuanna Hydraulic introduces why the hydraulic pump may slow down.

2025-07-23

The function of a hydraulic pump is to convert the mechanical kinetic energy of a power device (such as an electric motor or an internal combustion engine) into hydraulic pressure energy. Apart from the design scheme and manufacturing factors of the pump itself, as well as the selection of some components related to the application of the pump (such as couplings, oil filters, etc.), there are also many factors that can affect the service life of the hydraulic pump. The actual operation during the commissioning period.

After using the hydraulic pump for a while, it becomes evident that the speed has decreased compared to before. At this point, it is necessary to identify the reason for the decrease in the hydraulic pump's rotational speed and rectify the fault to ensure its normal operation. The following editor will guide you through the process of identifying and fixing the issue.

Firstly, non-standard manual operation can reduce the speed of the hydraulic pump. When operating the hydraulic pump, some customers may casually replace the motor due to damage to the original motor, which can lead to a mismatch in the performance indicators of the hydraulic pump and a reduction in its speed. Another reason for the reduction in the speed of the hydraulic pump may be improper assembly. During the assembly process, if the center-to-center spacing between two pulleys is too small or if the two shafts are not assembled parallel, it can result in a too-small overlap, which increases the center-to-center spacing between the two shafts of the hydraulic pump and reduces the speed ratio. Errors in the maintenance and repair of the hydraulic pump's power equipment can also reduce its speed. During the maintenance period, the speed of the motor will decrease due to burned windings and changes in the wiring of the winding operating components. On the other hand, damage to the conveyor belt can also affect the speed of the hydraulic pump. Long-term use of the hydraulic pump can cause damage and slackening of the belt, which can lead to slippage and a reduction in the speed of the hydraulic pump.