SKF SPEEDI-SLEEVE的理念
用于受损轴的快速方便的解决方案为有效密封,径向轴封必须紧靠一个光滑的圆形表面,即密封配合面上运行。如果配合面已经磨损,则密封不能实现其封隔润滑剂、排除污染物的功能。
通常,污染物颗粒进入密封唇下面会导致配合面磨出沟槽,而且随着轴的转动会形成一个沟痕。这下去,会有更多的颗粒进入密封件或粘着在密封件上,引起密封效果下降,SKF SPEEDI-SLEEVE衬套Gold型的表面硬度在80和85(洛氏硬度)之间,用于重载应用场合。SKF SPEEDI-SLEEVE的理念最终导致密封件功能失效。为缓解这一情况,必须对轴的配合面进行维修—仅仅更换密封件是不行的。修理轴时,通常需要拆除机器,才能将轴拆下来,然后再对轴进行打磨直至其重新恢复光滑状态。但是如果沟槽很深,须首先进行堆焊,然后再对轴进行打磨,直至其恢复原始尺寸大小。否则即使是新的密封件也不能进行有效密封。
有一种方法可以非常容易地对轴进行修理,这种方法无需拆除轴而且无需煞费苦心寻求不同尺寸的密封件。这就是SKF的SPEEDISLEEVE衬套。
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