How to Install and Test Quality on a Plain Bearing

Go / no-go bearing test
Bearing arbor press
  1. Use an arbor press to press-fit the bearings. This is the most efficient installation method and extremely important for preserving the integrity of the bearing. For example, if you use a hammer, the installation of the bearing might be uneven.
  2. Ensure your bearing housing has a chamfer—igus® recommends 25-30 degrees for its bearings—and that it is press-fit with the outside chamfer of the bearing against the housing chamfer (for flange bearings, the sleeve portion will have this).
  3. Ensure your ID-after-press-fit matches your supplier’s recommended tolerances for the bearing. In the case of an iglide® bearing, the recommended tolerances are based on press-fitting the bearing into a steel housing bore. Other housing materials are acceptable, however, igus® performs its quality tests using a steel housing bore. If you are using an iglide® bearing with a different housing material, the bearing’s ID-after-press-fit may not match up with our catalog specifications.
  • the pin acts like the shaft used in a real-world application; and
  • it reveals the inner diameter of the bearing at the smallest points, which is most critical to the application.
Bearing press fit
  • Confirm that the housing bore matches the recommended tolerances (generally an H7 housing bore).
  • If the housing bore is comprised of a softer metal, like aluminum or plastic rather than steel, it is possible that the bearing is pushing into the housing bore. To compensate, try using a thicker-walled housing.
  • Check your shaft tolerances to confirm that your pin gauges determined during the QC process are accurate.
  • If the ID of the bearing is undersized, make sure shavings are not coming in-between the bearing & the housing.