ball-and-race-type pulverizer

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.