Ball bearing bearing 3 series

radialaxialangular-contact

The double-row angular contact ball bearings correspond to their construction and function to a pair of single-row angular contact ball bearings turned by back to back, forming an „O“ shape. Both rings have a relatively deep raceways and they cannot be dismantled. In case of „E“ type construction, there is a filling opening on one side. The bearings achieve high load rate due to the optimal ball size and their contact with raceways. They can effectively bear radial and axial load in both directions and they are suitable for relatively high rotation frequencies. The mounting of the "E" type construction bearings should be done in such a way, that the axial force is spread on the row of balls on the side opposite to the filling opening. The raceways of the double row angular contact ball bearings are constructed in such way, that the flow lines of the contact points between balls and rings intersect the axis of the bearing outside the bearing itself ( contact angle α = 32°). This way the bearings can transfer the tilting point in the axial plane. Thus if there is limited space for mounting of the turning part, one bearing is sufficient. The boundary dimensions of double row angular contact ball bearings indicated in the dimension tables correspond to the international dimensional plan ISO 15. The designation of the bearings in the basic design is indicated in the dimension tables. The difference from the basic design is designated by additional symbols according to STN 02 4608. Double row angular contact ball bearings with covers on both sides are produced with cover sheets (2ZR), or seals (2RSR).