BOWER sells N640. Related information about N640 includes: Model N640 Inner diameter: 200 mm Outer diameter: 340 mm Thickness: 50 mm Series: Self aligning ball bearing. If you want to know more about N640 related information, you can consult online or call the hotline , we will serve you in detail. N640 has a wide range of uses. N640 is mainly used in engineering machinery, machine tools, automobiles, metallurgy, mining, petroleum, machinery, electric power, railways and other industries. The price of N640 sold by our company is reasonable and we look forward to cooperating with you.