roller bearing
mechanical components designed to reduce friction and support rotational movement between two parts, such as shafts and housings
en-US/ˈɹoʊlɚ ˈbɛɹɪŋ/
en-GB/ˈɹəʊlə ˈbɛəɹɪŋ/
mechanical components designed to reduce friction and support rotational movement between two parts, such as shafts and housings