50 hp champion tear circle hammer mill 15x22. stock # 14057 | capacity 50 hp. used champion tear circle hammermill, model 15x22, carbon steel. (2) jacketed front doors, swinging hammers, approximate 1” diameter screen holes, 9-1/2” x 14-1/2” feed, bottom discharge. driven by a 50hp, 3/60/460 volt, 3535 rpm motor.