Stainless Steel AISI420 Hardened Loose Ball Bearings Hardened to 52-55 Rockwell Scale.
AISI 420
Stainless steel AISI 420 offers higher hardness and a considerable resistance to corrosion against water, steam, oil, gasoline and alcohol. They are not suitable to be used with chemical agents. This type of ball is suitable for valves, special bearings, in which the protection against rustproof-grease is poor or absent.
International equivalents: JIS SUS 420 - JI X20 CR13 - Z40 C13 - EN56D - Wks 1.4034
Size range: 1.000mm - 69.85mm (2.3/4 inch)
Standard grade available: 40 - 100 - 200 - 500 - 1000
Hardness: HRC 53 - 57