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Y-bearing unit data


HousingsBearings
Dimension
standards
Boundary dimensions in accordance with:
  • ISO 3228
    • TU .. M series
  • JIS B 1559
    • TUJ series
    • TUWK .. L series
Bearing data
TolerancesTolerances (fig. 1) in accordance with:
  • ISO 3228
    • TU .. M series
      H1 → –0,25 mm1)
      A1 → +0,25 mm1)
  • JIS B 1559
    • TUJ series
      H1 → –0,25 mm1)
      A1 → +0,25 mm2)
    • TUWK .. L series
      H1 → –0,4 mm1)
      A1 → +0,4 mm2)

The outside diameter of the bearing is matched to it's seat in the housing so that the outer ring is prevented from turning, but still able to compensate for misalignment.

1) Tolerance narrower than specified in the relevant standard

2) Tolerance slightly wider than specified in the relevant standard

Bearing data
Radial internal clearanceBearing data
Materials

Cast iron

  • TU(J) series
    • grey cast iron EN-GJL-HB235 in accordance with EN 1561

Composite for SKF Food Line

  • TUWK .. L series
    • glass fibre reinforced PBT
Components and materials
MisalignmentBearing data
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