常见的油封修理包故障原因有哪些?

东晟骨架油封Oil Seal
2025-03-17 01:33:33
推荐回答(2个)
回答1:

故障一,油封不良。

表现:唇口不良,早期泄漏;弹簧质量不佳或失效,早期泄漏;径向压力过小,早期泄漏;

原因:制造质量不佳,刃口有毛刺或缺陷;弹簧过松、抱紧力过小等;

解决方法:去除毛刺或更换油封;更换油封弹簧;调整油封弹簧等。

故障二,装配不良。

表现:唇口有明显伤痕,早期泄漏;油封呈蝶状变形;油封唇口逆装配方向翻转或弹簧脱落,机器即发生泄漏;

原因:装配时,油封通过键槽或螺纹,划伤唇口;油封安装工具不当;轴端倒角不当,光洁度过低,或装配用劲过大,致使油封唇部翻转或弹簧脱落等;

解决方法:更换油封,重新装油封时,要用护套,以保护油封唇口;重新设计、制造油封安装工具;用细砂纸打磨轴端倒角,涂敷油脂,小心安装;

故障三:唇口磨损。

表现:润滑不良,唇口工作面磨损严重,宽度超过1/3以上,呈现无光泽;润滑油含有灰尘、杂质或无防尘装置,灰尘、异物等侵入

原因:润滑不良,唇口发生干摩擦;用油不洁,液压管路系统太脏;因灰尘等侵入唇部,引起异常磨损;轴上粘附粉末硬粒;装配时,铁屑等刺入唇口;铸件型砂侵入唇口;轴上或油封唇口误涂漆料油封弹簧抱得过紧等;

解决方法:保证润滑;保证润滑油清洁,加强管路系统清理;为了防止灰尘等侵入唇部,增设防尘装置;装配时注意清洁,去除误涂的漆料;

故障四:橡胶老化。

表现:唇部过热硬化或龟裂;润滑不良,唇部硬化、龟裂;唇部溶胀、软化;

原因:工作介质温度高于设计值,超过橡胶的耐用限度;润滑不良,发生干摩擦;橡胶对工作介质的相容性差;油封长时间浸于洗油或汽油中,使唇口溶胀等;

解决方法:降低工作介质温度,或换用耐热橡胶油封;保证润滑;选用相容于工作介质的橡胶材料或选用适于橡胶材料的工作介质;不得用洗油或汽油清洗油封,否则洗后立即擦干。

回答2:

漏油啊!变形啊!

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