SKF self-aligning ball bearings

SKF self-aligning ball bearings have two rows of balls, a common sphered raceway in the outer ring and two deep uninterrupted raceway grooves in the inner ring. They are available open or sealed. The bearings are insensitive to angular misalignment of the shaft relative to the housing, which can be caused, for example, by shaft deflection.

Designs of SKF self-aligning ball bearing

SKF self-aligning ball bearing variants are:

• open
  • with a cylindrical bore
  • with a tapered bore, e.g. for use with adapter sleeves
  • with an extended inner ring
• sealed (in the 22 and 23 series)
  • with a cylindrical bore
  • with a tapered bore, e.g. for use with adapter sleeves

Sealed self-aligning ball bearing equipped with contact seals on both sides. And this SKF bearings are lubricated for the life of the bearing and are virtually maintenance-free. They are filled with one of the following standard greases, which have good corrosion-inhibiting properties:

• D ≤ 62 → MT47 grease
• D > 62 → MT33 grease

Cages for SKF self-aligning ball bearing

Depending on their series and size, SKF self-aligning ball bearings are fitted with one of the cages shown in table below.

Cage type	One-piece, ball centred	Two-piece, ball centred	One-piece snap- type, ball centred	One-piece, ball centred	Two-piece, ball centred
Material	Stamped steel	Stamped steel	PA66, glass fibre reinforced	Machined brass	Machined brass
Suffix	-	-	TN9	M (no designation suffix when d ≥ 150 mm)	M (no designation suffix when d ≥ 150 mm)

Suffixes of SKF self-aligning ball bearing

SKF self-aligning ball bearing consist of a basic designation with or without one or more prefixes and suffixes.

Please refer to SKF bearings designation system for basic designation of SKF self-aligning ball bearing.

Suffixes