Hydraulic Gear Pump for OEM Re73947 Re72058 RE69866 Tractor Repair Parts

The life of a hydraulic gear pump is affected by the frequency of use, working environment, oil cleanliness and daily maintenance. Under normal use and proper maintenance (suitable environment, regular replacement of qualified oil, reasonable frequency of use), it can usually last for several years, and many users report that it can maintain good performance for 3-5 years; if the environment is harsh (high temperature and dust), high-intensity operation and insufficient maintenance, the life will be greatly shortened, and severe wear or failure may occur in 1-2 years.

The normal operating temperature of the hydraulic gear pump is -10℃ to 80℃. In this range, the oil viscosity is suitable, the parts have reasonable thermal expansion and contraction, and can ensure efficient and stable operation.
When the temperature is lower than -10℃, the oil viscosity increases sharply and the fluidity is poor, which will lead to difficulty in oil absorption, loud noise, unstable flow and even failure to start. Long-term use will also aggravate the wear of parts.
When the temperature is higher than 80℃, the oil is easy to oxidize and deteriorate, the lubricity decreases, the friction of internal parts is aggravated, the volumetric efficiency is reduced, and the seals may age and damage, causing leakage. In severe cases, the pump body will overheat and deform, shortening the service life.

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