Bearing data

Dimension standards

Boundary dimensions: ISO 9628

Except for:

Bearing series YAT 2

  • not standardized
  • bore, outside diameter and outer ring width: ISO 9628

Bearing series YSP 2, YSPAG 2

  • not standardized
  • outside diameter and outer ring width: ISO 9628

Bearing series YSA 2

  • JIS B 1558
  • ISO 2982-1 for H 23 series adapter sleeves
  • ANSI/ABMA Std. 8.2 for HA 23 and HE 23 series adapter sleeves

Bearing series 17262, 17263

  • ISO 15
  • outside diameter: ISO 9628

Tolerances

For additional information → Tolerances

Bearing series YAT 2, YAR 2, YARAG 2, YET 2, YEL 2, YELAG 2

  • Bore and outside diameter: table 1
  • Bore and outside diameter tolerance values are slightly tighter than those listed in ISO 9628.

Bearing series YSP 2, YSPAG 2

  • Outside diameter: table 1
  • Before mounting, the sleeve bore is larger than the nominal value to ease sliding on the shaft.

Bearing series YSA 2

  • Outside diameter: table 1
  • The tapered bore fits H 23 series adapter sleeves for metric shafts and HA 23 and HE 23 series adapter sleeves for inch shafts.

Bearing series 17262, 17263

Radial internal clearance

For additional information → Selecting internal clearance or preload

Values: ISO 9628 – Group N (table 3)

Except for:

Bearing series 17262, 17263

  • Normal: Values (ISO 5753-1, table 4)

Values are valid for unmounted bearings under zero measuring load.

Permissible misalignment

Static misalignment

Insert bearings can accommodate static initial misalignment by tilting in the housing (fig. 1). The permissible values are:
  • SKF housings
    • relubrication is not required: 5°
    • relubrication is required (where applicable): 2°
  • SKF pressed steel housings
    • Misalignment cannot be accommodated once the attachment bolts have been fully tightened, unless a rubber seating ring is used.

Dynamic misalignment
Insert bearings can accommodate a few minutes of arc (misalignment) between the inner and outer rings.

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