Page 602 - Rollingbearings

7 Needle roller bearings

Bearing data, continued

Needle roller / angular contact ball bearings Needle roller / thrust ball Needle roller / cylindrical
bearings roller thrust bearings

Dimension Boundary dimensions: Boundary dimensions: Boundary dimensions:
standards ISO 15 – dimension series 59, except for following DIN 5429-1, except for NX DIN 5429-1
inner ring parameters in the NKIB 59 series: and NX ‥ Z series bearings
• extended width on one side (not standardized)
• slightly larger bore diameter of the narrow part

Tolerances Normal, except for width of the complete inner D: Normal
ring in the NKIB 59 series: 0/–0,3 mm F : F6 (table 9, page 603)
w
d: E8 (table 9)
Values: ISO 492 (table 2, page 38) C: 0/–0,25 mm
C (applicable to NKX(R) series only): 0/–0,2 mm
1
For additional Values:
information Radial bearings → ISO 492 (table 2, page 38)
† page 35 Thrust bearings → ISO 199 (table 10, page 46)

Operating – Bearings without an inner ring
clearance Range slightly less than Normal if recommended toler-
ances (table 17, page 610) applied

Internal clearance Normal (bearings with an inner ring) –
Check availability of C2, C3 or C4 clearance classes
7
Values: ISO 5753-1 (table 11, page 603)
Values are valid for unmounted bearings under
zero measuring load.

Permissible Misalignment increases bearing noise and reduces Cannot tolerate any misalignment.
misalignment bearing service life.

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