液压油长期暴露在环境中，会被各种化学物质污染，因此，液压件必须具有良好且足够稳定的耐腐蚀性能，以满足液压系统的使用要求液压元件是油液在外界空气和水两种介质的作用下，被油液中的化学物质侵蚀，产生腐蚀产物的器件。
对于腐蚀严重部位，则必须更换磨损严重的零部件，甚至完全报废液压件表面必须有足够的耐磨耐腐蚀性；对于摩擦表面，必须有足够的耐磨性；对于腐蚀表面上，必须有足够的耐蚀性如选用的材料具有耐腐蚀性，在选择耐腐蚀的材料时，必须同时考虑对材料的化学作用。
如果材料本身有了一定性能，那么在进行系统设计时，需要考虑对部件进行适当的强度设计一般系统中使用多个部件时，系统设计会有所变化，如果设计强度不合适将会引起部件损坏或失效，因此在选择部件时还应考虑部件是否易于维修或更换。
液压元件工作时，由于受力状态和空间位置变化所产生的电磁特性，又称为电性能，液压件的电性能主要包括以下几个方面：(1)输出电流：液压元件以液压动力为能量来源，它将液压功率传递给负载以供动力机械的使用电抗器的电压随负载的变化，电抗变化的频率随负载率变化。
因此，在选择电抗器时，应注意观察液压管路是否安装在负载面上；(2)工作电压：是指工作介质（油和水等）的电压由于液压元件在工作时会产生较大的电阻率，所以液压元件在工作状态下承受较大的工作电压是必不可少的电抗器在工程上主要用来作电机的起动退磁装置。
通常在选用电抗器时应注意以下几点:(1)不能使电抗器发生过载而损坏;(2)应使电抗器能承受较高工作压力和持续工作时间;(3)工作电压应低于工作电流 液压件的高效率体现在使用寿命，稳定性和节能根据不同性能的液压件，使用寿命分别在3~5年,10~15年,20年和30年。
液压件具有较高的可靠性，而降低摩擦阻力可以提高工作效率从表面上看，高效率意味着提高了工作效率因此，高效率是液压件使用寿命的关键但由于液压件是非标产品，其质量要求很高因此，为了提高液压件的质量，应对其进行分析、试验。
并根据实际应用条件设计液压件，确保高效率 90R075-KA-5-BB-80-L-4-S1-D-03-GBA-26-26-24 90R075KA5BB80L4S1D03GBA262624 90-R-075-KA-5-BB-80-L-4-S1-D-03-GBA-26-26-24 90R075KA5BB80L4S1D03GBA262624 90R075-KA-5-BB-80-P-3-C6-C-03-GBA-42-42-24 90R075KA5BB80P3C6C03GBA424224 90-R-075-KA-5-BB-80-P-3-C6-C-03-GBA-42-42-24 90R075KA5BB80P3C6C03GBA424224 90R075-KA-5-BB-80-P-3-C7-E-03-GBA-42-35-22 90R075KA5BB80P3C7E03GBA423522 90-R-075-KA-5-BB-80-P-3-C7-E-03-GBA-42-35-22 90R075KA5BB80P3C7E03GBA423522 90R075-KA-5-BB-80-P-3-C7-E-03-GBA-42-42-26 90R075KA5BB80P3C7E03GBA424226 90-R-075-KA-5-BB-80-P-3-C7-E-03-GBA-42-42-26 90R075KA5BB80P3C7E03GBA424226 90R075-KA-5-BB-80-P-3-C7-E-03-GBA-45-35-22 90R075KA5BB80P3C7E03GBA453522 90-R-075-KA-5-BB-80-P-3-C7-E-03-GBA-45-35-22 90R075KA5BB80P3C7E03GBA453522 90R075-KA-5-BB-80-P-3-S1-E-04-GBA-42-42-24 90R075KA5BB80P3S1E04GBA424224 90-R-075-KA-5-BB-80-P-3-S1-E-04-GBA-42-42-24 90R075KA5BB80P3S1E04GBA424224 90R075-KA-5-BB-80-P-4-C6-D-03-GBA-42-42-24 90R075KA5BB80P4C6D03GBA424224 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