What is swivel ball bearing:

Single row radial ball bearings with a series of angular contacts are non-separable and consist of an outer ring, an inner ring and a cage with balls. The cage is guided on the inner ring (B according to the cage designation) or on the outer ring (A after the cage designation) or exclusively on the balls (no letter after the cage designation).
The basic feature differentiation of angular ball bearings of regular ball bearings is a different control of the inner ring guided path of the outer ring. The track is positioned axially in one direction. Due to this fact, such bearings can carry significant axial loads exactly in this direction.
Technical data:

Model: 7000AC.
Inner (d): 10 mm.
Outer diameter: 26 mm.
Width (b): 8 mm.
Class: ABEC-1.
Material: chromesteel rings.
Cage: nylon cage.
Balls: Chromesteel balls.
Lubrication: self-lubricated (self-lubricated (no grease).
Qty: you will receive 2 parts ball bearings