Deep groove ball bearings: Deep groove ball bearings are the most typical rorring bearings with the characteristics of simply designed strutures,convenience in operation and extensive applications. They are designed as non-separable bearings.The raceways in both of the rings are in arc groove form, which can carry radial load and doubl directions axial load.They are of features where high-rotating speed and low noise and low vibrationare required .Applications of there bearings can be found inautomobliles,machinetools,motors,instruments.nstruction machines,railway vehicle ,argricutural machine and various other special machines.18series ≥61856M ,series19 ≥61936M ect.