挖掘机作为一种在工地上担任重要角色的工程机械，经过了几十年的发展，从以前的技术不成熟到现在的技术已经成熟。而且连挖掘机的配件产品挖掘机伸缩臂现在也已经成为了工地上的常客了。
As a kind of construction machinery that plays an important role in the construction site, excavator has been mature from the previous immature technology to the present technology after decades of development. Moreover, even the excavator telescopic boom, an accessory product of the excavator, has now become a regular guest on the construction site.
虽然现在的制造技术及已经成熟了，但是并不意味着挖掘机伸缩臂就可以一直保持良好的状态来为人们工作，一款良好的挖掘机伸缩臂除了和它本身的制造技术相关之外，还会和伸缩臂的使用者的使用习惯相关。
Although the current manufacturing technology and have matured, it does not mean that the excavator telescopic arm can always maintain a good state to work for people. A good excavator telescopic arm is not only related to its own manufacturing technology, but also related to the use habits of the users of the telescopic arm.

先需要注意的是定期保养挖掘机伸缩臂，伸缩臂在工作中处于不断地伸缩状态中，所以，必须定期对伸缩臂导轨进行检查，排除小故障，杜绝大故障；第二点就是要保持伸缩臂本身的干净整洁，虽然现在的伸缩臂多半采用锰钢制作而成的，但是面对伸缩臂所处的恶劣环境而言，注意保持伸缩臂的整洁很有必要。
It should be noted that the telescopic arm of the excavator should be maintained regularly. The telescopic arm is in a continuous telescopic state during operation. Therefore, the telescopic arm guide rail must be checked regularly to eliminate small faults and major faults; The second point is to keep the telescopic boom clean and tidy. Although most of the telescopic boom is made of manganese steel, it is necessary to keep the telescopic boom clean and tidy in the face of the harsh environment of the telescopic boom.
第三点就是为伸缩臂换机油的时候，很有必要选择合成机油，切莫贪图小便宜，为自己心爱的伸缩臂换装了劣质的机油；第四点是作业的过程中需要保持规律性的作业动作，切莫挑战挖掘机伸缩臂的极限，因为不规律的动作一旦超出了伸缩臂本身的限度要求就会造成伸缩臂的寿命减短甚报废。
The third point is that when changing the oil for the telescopic arm, it is necessary to choose synthetic oil. Don't be greedy for small and cheap, and change the inferior oil for your beloved telescopic arm; The fourth point is that regular operation actions need to be maintained in the process of operation. Do not challenge the limit of the telescopic arm of the excavator, because once the irregular action exceeds the limit requirements of the telescopic arm itself, the service life of the telescopic arm will be shortened or even scrapped.