|Boundary dimensions: ISO 1206 for bearings in the (R)NA 48, (R)NA 49 and (R)NA 69 series
P6 or P5 on request
Tighter tolerance for inside diameter under the rollers on request (designation suffix H followed by two numbers that identify the tolerance limit e.g. H+24+20).
Values: ISO 492 (table 2, table 3, table 4)
|Operating clearance||Bearings without an inner ring
Suitable ranges (table 5) where:
|Internal clearance||Normal (bearings with an inner ring)
Check availability of C2, C3 or C4 clearance classes
Values: ISO 5753-1 (table 6)
Values are valid for unmounted bearings under zero measuring load.
≈ 1 minute of arc
Misalignment increases bearing noise and reduces bearing service life, and when it exceeds the guideline values these effects become particularly noticeable.