Page 601 - Rollingbearings

Bearing data

Needle roller bearings with machined rings Alignment needle roller bearings

Boundary dimensions: d, D: ISO 15
ISO 1206 for bearings in the (R)NA 48, (R)NA 49 and (R)NA 69 D ≤ 47 mm → diameter series 0
series D ≥ 55 mm → diameter series 9

Normal • Normal for the inner ring and the outer ring with sphered out-
P6 or P5 on request side surface
• Fw: F6 (table 9, page 603) • C of the external drawn sheet steel sleeve: ± 0,5 mm
Values are valid for unmounted bearings when rollers are in • F : F6 (table 9, page 603)
w
contact with the outer ring raceway Values are valid for unmounted bearings and when rollers are
in contact with the outer ring raceway
Tighter tolerance for inside diameter under the rollers on request
(designation sufix H followed by two numbers that identify the Values: ISO 492 (table 2, page 38)
tolerance limit, e g H+24+20)

Values: ISO 492 (table 2, page 38, to table 4, page 40)

Bearings without an inner ring Bearings without an inner ring
Suitable ranges (table 10, page 603) where: Range of C2 to C3 if recommended tolerances (table 17,
• recommended shaft tolerance classes applied page 610) applied
• housing bore tolerance not tighter than K7�

7
Normal (bearings with an inner ring)
Check availability of C2, C3 or C4 clearance classes

Values: ISO 5753-1 (table 11, page 603)
Values are valid for unmounted bearings under zero measuring load

≈ 1 minute of arc ≤ 3° static misalignment
No dynamic misalignment

… and when it exceeds the guideline value these effects become particularly noticeable

599