Tech Talks

How to properly secure bearings part 2: axial securing

Tech Talks by igus helping solve design engineering problems with motion plastics

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tech talk Learn more at Part Two: Axial securing In part one of this "How to properly secure bearings" tech talk series, the reasons as to why bearings move out of their mounting holes and what can be done to prevent it were covered. If press fit is not achieved, it can be done by changing bearing shape. Here, we will take a look at different ways of axial securing bearings. How to properly secure bearings Option 1: Axial securing with slit bearings and undercuts With an open slit design, the bearing can compensate for a certain range of tolerance deviation from the housing bore. This design also allows for a double flanged shape. The two flanges allow for axial securing in both directions. With the slit design, the bearing can be compressed, allowing the second flange to be put through the mounting hole. Once put in, the bearing expands again so the second flange can keep the bearing from falling out of the housing. As one can imagine, this design also requires the bearing material to be flexible enough to withstand the installation process. Option 2: Axial securing bearings with "snap-in" solutions Snap features can help secure bearings axially. During assembly, the protruding undercut features are pressed together automatically. As soon as they pass the assembly hole, they snap back in place and keep the bearing from going back. The flange at the back end of the bearing further prevents the bearing from going in too far. The process is easy, reliable and fast, ideal for use in mass production.

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