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Fit selection

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Answer all questions and select “View results” to get your evaluation.

For the answer options with a circle symbol, you can only choose one correct answer at a time.

For the answer options with a rectangle symbol, several answers can be correct.

1. What do you want to optimise with the right choice of fit?

2. Why can a clearance between the mating surfaces of the bearing and the shaft or housing be desirable?

3. What can geometric errors in the choice of fit lead to?

4. What are the criteria that should be considered when choosing a fit?

5. Interference fits are required on all bearing rings where the rotating loads are applied relative to their radial direction.

6. In which applications are fits with low interference recommended?

7. What are the possible disadvantages of an high interference fit?

8. The interference of a bearing fit can be determined on the basis of the diameter tolerances of the shaft and housing bores and the tolerances of the bearing rings.

9. Which of the following factors reduce the permissible interference between inner ring and shaft or housing and outer ring?

10. What can occur due to too much interference?

11. What is the specified upper limit of the interference?

12. With aluminium, due to its high coefficient of expansion, there is no need to pay attention to thermal expansion.

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