They are the most typical rolling bearings bearings with extensiveapplications.

The raceways in both of the rings are in arcgroove form, which can carry radial load and

axial load indouble directions. They can be applied in situations wherehigh-rotating

speed and low noise and low vibration arerequired.

      Adequate lubricating grease shall befilled before hand inthe sealed bearings

and shielded bearings.

      For bearings with filling slot , the number of the steel ballscan be increased,

leading to higher basic load ratings.

     Applications of these bearings can be found in automobiles,machine tools,motors,

instruments,construction machines, railway vehicles, agricultural machies  and various othe

rspecial machines.