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The history is cornerstone of the
present time as well as challenge to the future.

2. Bearing terminology

2.1 Radial bearings
2.2 Radial bearings

An illustrative description of terms that characterize individual types of bearings can be seen in the following pictures.

2.1 Radial bearings

(fig. 2.1 and 2.2)

  1. Inner race
  2. Outer race
  3. Rolling element – ball, cylindrical roller, spherical roller, tapered roller
  4. Cage
  5. Seal, shield
  6. Outer cylindrical bearing surface
  7. Bearing bore
  8. Cylindrical surface of inner ring flange
  9. Cylindrical surface of outer ring flange
  10. Snap ring groove
  11. Snap ring
  12. Outer ring face
  13. Seal groove
  14. Outer ring raceway
  15. Inner ring raceway
  16. Bearing seal recess
  17. Inner ring face
  18. Installation fillet
  19. Bearing mean diameter
  20. Bearing width
  21. Guiding flange
  22. Support flange
  23. Contact angle
Fig. 2.1 Fig. 2.2

2.2 Radial bearings

(fig. 2.3 to 2.5)

  1. Shaft ring
  2. Cage with rollers
  3. Housing ring
  4. Housing ring with spherical bearing surface
  5. Spherical housing ring
Fig. 2.3
Fig. 2.4
Fig. 2.5

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ZKL

ZKL is the biggest manufacturer of large-scale spherical-roller, special and split bearings in Central Europe.

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