<p style="margin:0cm 0cm 0pt;" class="MsoNormal"><span style="font-size:small;"><span style="font-family:宋体;letter-spacing:0.75pt;mso-bidi-font-size:10.5pt;mso-ascii-font-family:'Times New Roman';mso-hansi-font-family:'Times New Roman';">轴承精度低；主轴弯曲或箱体孔不同心；皮带过紧；润滑不良；装配质量低；轴承内外壳跑圈；轴向力太大</span><span style="letter-spacing:0.75pt;mso-bidi-font-size:10.5pt;" lang="EN-US"><span style="font-family:'Times New Roman';">&nbsp;</span></span><span style="font-family:宋体;letter-spacing:0.75pt;mso-bidi-font-size:10.5pt;mso-ascii-font-family:'Times New Roman';mso-hansi-font-family:'Times New Roman';">；轴承损坏。</span></span></p> <span style="font-family:宋体;letter-spacing:0.75pt;mso-bidi-font-size:10.5pt;mso-ascii-font-family:'Times New Roman';mso-hansi-font-family:'Times New Roman';"> <p style="margin:0cm 0cm 0pt;" class="MsoNormal"><span style="font-size:small;"><span lang="EN-US"><span style="mso-spacerun:yes;"><span style="font-family:'Times New Roman';">&nbsp; </span></span></span></span></p> </span>