Ball-and-race-type pulverizer | Article about ball-and ...
ball-and-race-type pulverizer. [ ¦bȯl ən ¦rās ‚tīp ′pəl·və‚rīz·ər] (mechanical engineering) A grinding machine in which balls rotate under an applied force between two races to crush materials, such as coal, to fine consistency. Also known as ball-bearing pulverizer.