Free space on both sides of the bearing

To prevent interference between rotating and stationary components, the abutment diameter on the shaft should be < d2 and in the housing > D1 (fig. 1). Values for d2 and D1 are listed in the product tables.
The necessary width of the free space Ca depends on:
  • the actual misalignment
  • the possible protrusion of the cage from the side face of the bearing for some bearing sizes
  • lubrication requirements
That requisite free space should be at least 20 times the minimum value of the radial internal clearance in the unmounted bearing (table 1 or table 2).
For additional information, contact the SKF application engineering service.
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