440 Stainless Steel Angular Contact Ball Bearings Single Row S7001AC – S7009AC
S7001AC (12x28x8). S7009AC (45x75x16). Ring Material: 440 Stainless Steel. 440 stainless steel is characterised by high hardness, good wear resistance and long service life, but the corrosion resistance is not as good as 304 stainless steel, which is magnetic.