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Bearing data

Needle roller / angular contact ball bearings
Dimension standardsBoundary dimensions: ISO 15 – dimension series 59, except for following inner ring parameters in the NKIB 59 series:
  • extended width on one side
  • slightly larger bore diameter of the narrow part
Tolerances

For additional information → Tolerances

Normal, except for width of the complete inner ring in the

NKIB 59 series: 0/–0,3 mm
Values: ISO 492 (table 1)

Internal clearanceNormal (bearings with an inner ring)

Check availability of C2, C3 or C4 clearance classes


Values: ISO 5753-1 (table 2)

Values are valid for unmounted bearings under zero measuring load.

Permissible misalignmentMisalignment increases bearing noise and reduces bearing service life.
Needle roller / thrust ball bearings
Dimension standardsBoundary dimensions: DIN 5429-1,
except for:
  • NX and NX .. Z series bearings (not standardized)
Tolerances

For additional
information
→ Tolerances

  • D: Normal
  • Fw: F6 (table 3)
  • d: E8 (table 3)
  • C: 0/–0,25 mm
  • C1 (applicable to NKX series only): 0/–0,2 mm

Values:
  • Radial bearings → ISO 492 (table 1)
  • Thrust bearings → ISO 199 (table 4)
Operating clearanceBearings without an inner ring

Range slightly less than Normal if recommended tolerances (table 5) applied

Permissible misalignmentCannot tolerate any misalignment.
Needle roller / cylindrical roller thrust bearings
Dimension standardsBoundary dimensions: DIN 5429-1
Tolerances

For additional information

→ Tolerances

  • D: Normal
  • Fw: F6 (table 3)
  • d: E8 (table 3)
  • C: 0/–0,25 mm
  • C1: 0/–0,2 mm

Values:
  • Radial bearings → ISO 492 (table 1)
  • Thrust bearings → ISO 199 (table 4)
Operating clearanceBearings without an inner ring

Range slightly less than Normal if recommended tolerances (table 5) applied

Permissible misalignmentCannot tolerate any misalignment.
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