(1)7022AC Angular Contact Bearing (2)high precision long life low noise less ... 3)ISO9001:2000 (4)good service 1Product name7022AC Angular Contact Ball Bearing2 Standard bearing materials GCr15_China/(AISI)52100_American/(DIN)100Cr6_Germany ... operations, paper mills, oil fields, marine industry, steel, electrical, construction machinery various kinds of professional machinery and heavy industry ...