Beater for impact mill for grinding brown coal has bolt passing through beater arm and beater head and secured against falling out by square edge security element welded on its end side

摘要

The beater has a beater arm (18) fixed on the shaft of the mill and a bolt (22) passing through the arm and the forked part (19) of the beater head and secured against falling out by a security element having a square edge (29) welded onto the end side of the bolt. The square edge fits in an indentation (28) set coaxial on the impact head.