6200 bearing and 6200ZZ bearing and 6200 2RS bearing that we produce the high Precision bearing and they are  the ball bearing and deep groove ball bearings, They are the most common type of bearing. Deep groove ball bearing outer ring, inner ring, steel ball and a group of cage assembled into a set of bearing. 

Deep groove ball bearing type has two kinds of single and double row deep groove ball structure,and they have also the split seal and open two type, it means open bearings without sealing rubber and iron covering,shielded bearing that sealing deep groove ball into dust seal and oil seal. 

http://www.deepgroveballbearings.com/