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Axial location of bearing rings

Performance and operating conditionsBearing type and arrangementBearing sizeLubricationOperating temperature and speedBearing interfacesBearing executionSealing, mounting and dismounting

Typically, it is not sufficient to use an interference fit alone to axially locate a bearing ring on a cylindrical seat. Common ways of locating bearing rings axially include: Any axial location should be able to accommodate the axial loads that may be applied to the bearing.
fig. 1
fig. 2
fig. 3
fig. 4
fig. 5
fig. 6

Bearings with a tapered bore

Depending on conditions and requirements, common ways of axially locating the inner ring of a bearing with a tapered bore are:

  • a lock nut for bearings mounted on a tapered seat (fig. 7)
  • an adapter sleeve only (fig. 8), if no precise axial positioning is required and the axial loads do not exceed the friction between sleeve and shaft
  • an adapter sleeve and a distance ring (fig. 9), if precise axial positioning is required or elevated axial loads occur
  • a withdrawal sleeve with a distance ring (or shaft shoulder) and lock nut (fig. 10)
fig. 7
fig. 8
fig. 9
fig. 10

Abutments and fillets

When designing abutments, allow enough space to avoid contact between rotating and stationary parts.

Shaft and housing fillet dimensions should always be smaller than the bearing chamfer radii. Heavily loaded shafts can require large fillets and a spacing collar may be necessary (fig. 11).

Appropriate abutment and fillet dimensions are listed in the product tables.
fig. 11
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