Page 678 - Rollingbearings

Bearing data

8 Tapered roller bearings

Bearing data

Metric single row bearings Inch single row bearings

Dimension Boundary dimensions: Boundary dimensions:
standards ISO 355 AFBMA Standard 19 (ANSI B3 19)
ANSI/ABMA Standard 19 2 has replaced the above
Bearings with designation preix J: standard, but does not include dimensions.
ANSI/ABMA Standard 19 1

Tolerances • Normal
• tighter geometrical tolerances for bearings with designation sufix CL7C

Bearings with designation preix J: Check availability of CL3, CL0 or tighter width tolerance
ANSI/ABMA Standard 19 1
Values: ANSI/ABMA Standard 19 2 (table 9, page 45)
Check availability of tighter width tolerance to 6 X toler-
ance class (designation sufix CLN) or P5 Deviating width tolerances for cups and cones are
identiied by a designation sufix (table 4, page 678)
Values: ISO 492 (table 5, page 41 to table 7, page 43 )

The inner ring with roller and cage assembly (cone) and outer ring (cup) with the same basic designation are inter-
For additional infor- changeable The tolerance for the total abutment width T of the bearing is not exceeded if the cones and cups are
mation † page 35 interchanged

Internal clearance Obtained after mounting, depending on adjustment against a second bearing

8

For additional infor-
mation † page 182

Preload Obtained after mounting, depending on adjustment against a second bearing

For additional infor-
mation † page 182

Permissible SKF Explorer bearings: ≈ 2 to 4 minutes of arc
misalignment
Where misalignment cannot be avoided, SKF recommends using only SKF Explorer bearings

The permissible angular misalignment between the inner and outer rings depends on the size and internal design
of the bearing, the radial internal clearance in operation and the forces and moments acting on the bearing As a
result, only approximate values are listed here
Any misalignment increases bearing noise and reduces bearing service life

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