Page 394 - Rollingbearings

Bearing data

3 Angular contact ball bearings

Bearing data

Single row angular contact ball bearings

Dimension Boundary dimensions: ISO 15 and ISO 12044
standards

3
Tolerances Normal
Except for:
• SKF Explorer bearings:
– P6 dimensional tolerance
– P5 geometrical tolerance
• Bearings with D ≥ 400 mm:
– P6 geometrical tolerance

For additional infor-
mation † page 35 Values: ISO 492 (table 2, page 38, to table 4, page 40)

Contact angle • sufix B: 40°
• sufix AC: 25°

For availability of bearings with 30° contact angle, contact SKF

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

Pairs of universally matchable bearings
• CA – smaller than Normal axial clearance (table 4, page 394)
• CB – Normal axial clearance (standard) (table 4)
• CC – larger than Normal axial clearance (table 4)
• G (standard for larger bearings) - Normal axial clearance (table 5, page 394)

For additional infor- Values are valid for unmounted bearing sets, arranged back-to-back or face-to-face under zero measuring load
mation † page 182

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

Pairs of universally matchable bearings
• GA – light preload (standard)
• GB – moderate preload
• GC – heavy preload
For additional infor-
mation † page 182 Values (table 6, page 395) apply to unmounted bearing sets, arranged back-to-back or face-to-face

Permissible Back-to-back: ≈ 2 minutes of arc
misalignment Face-to-face: ≈ 4 minutes of arc

Misalignment increases bearing noise and reduces bearing service life, and when it exceeds …

392