Page 848 - Rollingbearings

10 CARB toroidal roller bearings

Bearing data

Dimension Boundary dimensions: ISO 15
standards

Tolerances Normal

d ≤ 300 mm
• width tolerance at least 50% tighter than ISO standard (table 2)
• P5 geometrical tolerances

d > 300 mm
For additional • P5 geometrical tolerances on request (designation sufix C08)
information
† page 35 Values: ISO 492 (table 2, page 38, to table 4, page 40)

Internal clearance Normal
Check availability of C2, C3, C4 or C5 clearance classes

Values: ISO 5753-1
• cylindrical bore (table 3)
• tapered bore (table 4, page 848)

Values are valid for unmounted bearings under zero measuring load, with no misalignment, no axial displace-
ment between the inner and outer rings, and the rollers centred.
For additional
information Axial displacement of one bearing ring relative to the other reduces the radial internal clearance. Typical clear-
† page 182 ance window † diagram 1, page 850.

Permissible 0,5°
misalignment For misalignment > 0,5°, contact the SKF application engineering service.

Permissible axial s 1 max , s 2 max (product table, page 856)
displacement
(ig. 11, page 850) The actual internal clearance can limit the possible axial displacement. Misalignment reduces the possible axial
displacement. For details, refer to Veriication of axial displacement, page 850.
Free space must be provided on both sides of the bearing (Free space on both sides of the bearing, page 852).

10

Table 2
Width tolerances for CARB bearings
Bore diameter Width tolerances
d t ΔBs
> ≤ U L

mm μm

18 50 0 –40
50 80 0 –60
80 250 0 –80
250 300 0 –100

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