Page 600 - Rollingbearings

Bearing data

7 Needle roller bearings

Bearing data

Needle roller and cage assemblies Drawn cup needle roller bearings

Dimension ISO 3030 when F ≤ 100 mm, as far as standardized Boundary dimensions:
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standards ISO 3245, as far as standardized

Tolerances • rollers: ISO 3096 Grade 2 (grade G2) ISO 3245, as far as standardized
– tolerance of each gauge 2 μm • F ≈ within F8 (table 8, page 602)
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– standard gauges (table 5, page 601) Measuring of F :
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– speciic gauge to be stated when ordering – bearing must be pressed into a thick-walled ring
• U: ISO 3030, as far as standardized (–0,2/–0,8 mm) gauge, bore diameter listed in table 8
– check deviation of F with measuring mandrel
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• C: 0/–0,3 mm
For additional Dimensional tolerances can be checked only if bearings
information are mounted.
† page 35

Operating Range of C2 to Normal if: Range of C2 to C3 if recommended tolerances
clearance • itted with standard gauge rollers (table 5, (table 17, page 610) applied
page 601)
• recommended raceway tolerances (table 6,
page 601) applied
• normal operating conditions
7 Internal clearance Speciic ranges: table 7, page 602 –

Permissible ≈ 1 minute of arc ≈ 1 minute of arc
misalignment

Misalignment increases bearing noise and reduces bearing service life, …

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