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Shaft specifications

When a labyrinth ring is mounted on the same shaft diameter as the bearing, its seat should comply with the tolerances required by the bearing.
  • Housings without suffix
    The recommended shaft tolerance class is h9.
  • Housings with suffix C
    The recommended shaft tolerance class is h6 (both under the adapter sleeve and the labyrinth rings).
  • Housings with suffix E
    The recommended shaft tolerance class for bearings with a bore diameter up to 140 mm is p6, and for larger bearings r6. The shaft tolerance class under the outer labyrinth seal is h6.
  • Housings with suffix G
    The recommended shaft tolerance class for bearings with a bore diameter up to 140 mm is p6, and for larger bearings r6. Where a labyrinth ring is mounted on a separate seat, the recommended shaft tolerance class is h6.
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