Less wear means they can be used to achieve tighter tolerances than crush rolls.

The wheel and crushing roll rotate in the same direction at the point of contact and with the same surface speed.

The mill's equipment included three sets of stamps and three sets of auxiliary crushing rolls.

Crush rolls - a crush roll is a high-speed steel or tungsten carbide wheel.

It is not easy to appreciate to the full the daring exemplified in these great crushing rolls, or rather "rock-crackers," without having watched them in operation delivering their "solar-plexus" blows.

Diamond crush rolls - a diamond crush roll is a crush roll coated with diamond particles.

Complex profiles can be created in these wheels using a crushing process as shown in Fig. 21. A steel crush roll with the appropriate profile is placed in contact with the wheel.