The Hartl Jaw crusher has a "quattro movement". This is made possible by the up-thrust toggle position, giving the swing jaw a very aggressive motion. This means that, when compare to other jaw crushers, Hartl crushers can handle materials, which are 25 % larger without having blockages in the crusher inlet.

The motion of the swing jaw also gives the material a post-crush as the material leaves the crushing chamber - due to this, Hartl jaw crushers produce a constant and cubically shaped end product.