Gyratory Crushers Concave and Mantle Wear Parts for Mining Crushers . Frog Switch manufactures concaves and mantles for Allis-Chalmers and Fuller Traylor gyratory crushers Choose from these three configurations.Feb 17, 2016 Gyratory Crushers. The primary rock breaker most commonly used in large plants is the gyratory crusher, of which a typical section is shown in Fig. 5. It consists essentially of a gyrating crushing head (521) working inside a crushing bowl (522) which is fixed to the frame (501).