In the last issue of《Dimensional classroom》Li，Xiaowei took you to learn the installation steps of the awning of the Hummer small roller.，Current period《Dimensional classroom》Xiaowei will take you to understand the working principle and daily maintenance methods of the pneumatic cutter head extractor of Wittgen milling machine.。

In the milling process，Milling machine tool with the increase of milling operation，When the cutter head is worn to a certain extent, it needs to be replaced in time.，Otherwise, the working efficiency of the machine will be reduced due to the reduction of cutting ability.，And that quality of the construction is reduce.。The Wirtgen Milling Machine pneumatic bit extractor is a special tool to help quickly remove worn bits that need to be replaced.。The tool is in good condition，Use the hand to ensure that the cutter head can be replaced more quickly.，Thereby minimizing the resulting downtime，This is especially important in rush projects.。

When Wittgen's Chinese training teacher visited the construction site, he found that，Not all operators can correctly use and maintain the pneumatic cutter head extractor.，Damage also occurs from time to time。Therefore, this issue of Wei Classroom Video Xiaowei brings a special lecture to Wei fans who use the Wirtgen pneumatic cutter head extractor.，Click on the video to see how to properly use and maintain the bit extractor，See if you did the right thing.？