Bearing data

Dimension standards	Boundary 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 clearance	Normal (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 misalignment	Misalignment increases bearing noise and reduces bearing service life.

Dimension standards	Boundary dimensions: DIN 5429-1, except for: NX and NX .. Z series bearings (not standardized)
Tolerances For additional information → Tolerances	D: Normal F_w: 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 clearance	Bearings without an inner ring Range slightly less than Normal if recommended tolerances (table 5) applied
Permissible misalignment	Cannot tolerate any misalignment.

Dimension standards	Boundary dimensions: DIN 5429-1
Tolerances For additional information → Tolerances	D: Normal F_w: 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 clearance	Bearings without an inner ring Range slightly less than Normal if recommended tolerances (table 5) applied
Permissible misalignment	Cannot tolerate any misalignment.

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