BOWER sells R20. Related information about R20 includes: Model R20 Inner diameter: 31.75 mm Outer diameter: 57.15 mm Thickness: 9.525 mm Series: Deep groove ball bearing. If you want to know more about R20 related information, you can consult online or call the hotline , we will serve you in detail. R20 has a wide range of uses. R20 is mainly used in engineering machinery, machine tools, automobiles, metallurgy, mining, petroleum, machinery, electric power, railways and other industries. The price of R20 sold by our company is reasonable and we look forward to cooperating with you.