Glossary

Preload - What does preload mean in the context of rolling bearings?

Preload is a force, for example, applied to rolling bearings, which narrows the space to achieve optimal running properties.

  • Question: How is the preload of a rolling bearing defined?
    • Answer: The preload of a rolling bearing is determined by the negative bearing clearance or negative operational play.

  • Question: What is the purpose of preload in a support-load bearing assembly?
    • Answer: In a support-load bearing assembly, preload is used to put the rolling bearings under pressure. This helps to minimize play and flexibility, which improves the precision and stiffness of the bearing assembly.

  • Question: Why is preload important in certain applications?
    • Answer: Preload is crucial in applications where precision and stiffness are required. By deliberately creating preload, it is ensured that the rolling bearings operate optimally and are able to absorb loads with minimal play.