Bearing data

Metric single row deep groove ball bearings
Dimension standardsBoundary dimensions: ISO 15

Snap rings and grooves: ISO 464
Tolerances

For additional information
Tolerances
Normal
P6 or P5 on request

Except for:
  • SKF Explorer bearings:
    • Dimensional tolerances to P6 and tighter width tolerance:
      D ≤ 110 mm → 0/ –60 μm
      D > 110 mm → 0/ –100 μm
    • Geometrical tolerances:
      D ≤ 52 mm → P5
      52 mm < D ≤ 110 mm → P6
      D > 110 mm → Normal

Values: ISO 492 (table 1, table 2, table 3)
Internal clearance

For additional information
Internal clearance
Single bearings

Normal
Check availability of C2, C3, C4, C5, reduced ranges of standard clearance classes or partitions of adjacent classes.


Values: ISO 5753-1 (table 4)
Values are valid for unmounted bearings under zero measuring load.


Matched bearing pairs

Supplied either with clearance or preload:
  • CA – small axial internal clearance
  • GA – light preload

Values: (table 5)
Values are valid for unmounted bearing sets under zero measuring load.

Permissible misalignmentSingle bearings

≈ 2 to 10 minutes of arc
Misalignment increases bearing noise and reduces bearing service life, and when it exceeds the guideline values these effects become particularly noticeable.


Matched bearing pairs

Any misalignment increases bearing noise and reduces bearing service life.
For additional information, contact the SKF application engineering service.

Inch single row deep groove ball bearings
Dimension
standards
BS 292-2:1982, withdrawn in 1997
Tolerances

For additional information
Tolerances
Normal

Values → table 6

Internal clearance

For additional information
Internal clearance
Normal

Values: ISO 5753-1 (table 4)
Values are valid for unmounted bearings under zero measuring load.

Permissible misalignment≈ 2 to 10 minutes of arc

Misalignment increases bearing noise and reduces bearing service life, and when it exceeds the guideline values these effects become particularly noticeable.

Stainless steel deep groove ball bearings

Metric bearingsInch bearings
Dimension standards

Boundary dimensions: ISO 15

Except for:
  • bearings with suffix X
  • bearings with prefix WBB1
  • outer ring flange of flanged bearings: ISO 8443
Boundary dimensions:

ANSI/AFBMA Std. 12.2

Except for:
  • outer ring flange of flanged bearings: ISO 8443
Tolerances

For additional information
Tolerances
Normal
P6 or P5 on request


Values: ISO 492
(table 1, table 2, table 3)
Normal



Values: ISO 492 (table 1)
Internal clearance

For additional information
Internal clearance
  • Normal
  • Check availability of other clearance classes

Values: ISO 5753-1 (table 4)

Except for:
Values are valid for unmounted bearings under zero measuring load.
Permissible misalignment≈ 2 to 10 minutes of arc

Misalignment increases bearing noise and reduces bearing service life, and when it exceeds the guideline values these effects become particularly noticeable.

Material

For information about materials, refer to Components and materials.

Single row deep groove ball bearings with filling slots
Dimension standardsBoundary dimensions: ISO 15

Snap rings and grooves: ISO 464
Tolerances

For additional information
Tolerances
Normal


Values: ISO 492 (table 1)
Internal clearance

For additional information
Internal clearance
Normal


Values: ISO 5753-1 (table 4)

Values are valid for unmounted bearings under zero measuring load.

Permissible misalignment≈ 2 to 5 minutes of arc

Misalignment increases bearing noise and reduces bearing service life, and when it exceeds the guideline values these effects become particularly noticeable.

Double row deep groove ball bearings
Dimension
standards
Boundary dimensions: ISO 15
Tolerances

For additional information
Tolerances
Normal


Values: ISO 492 (table 1)
Internal clearance

For additional information
Internal clearance
Normal
Check availability of C3 clearance class


Values: ISO 5753-1 (table 4)
Values are valid for unmounted bearings under zero measuring load.

Permissible misalignment≤ 2 minutes of arc

Misalignment increases bearing noise and reduces bearing service life, and when it exceeds the guideline values these effects become particularly noticeable.

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