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液压泵和液压马达的有效使用期一般为3000～6000h(正常工作时间累积),超出此期限,液压泵的性能就会明显下降,甚至不能使用。这时,就必须对其进行修复或更新。因为修复的成本比较低,仅为更新费用的50％(国产泵)或10％(进口泵),所以,如果液压泵或液压马达的内部磨损不十分严重,就应修复,而不是换件。
The effective life of the hydraulic pump and hydraulic motor is generally 3000 ~ 6000h (normal working hours accumulated), beyond this period, the performance of the hydraulic pump will be significantly reduced, or even can not be used. At this time, it must be repaired or updated. Because the cost of repairing is relatively low, only 50% (domestic pump) or 10% (import pump) of the renewal fee, hydraulic pumps or hydraulic motors should be repaired instead of being replaced if their internal wear is not very severe.