single jaw crushers include one toggle, that goes from the bottom of the swinging jaw right up to a certain point behind the jaw crusher. Compared to double toggle jaw crushers, single ones include fewer shafts and bearings. The eccentric of a single jaw crusher is located at the top of the swinging jaw. The position of the eccentric provides the jaw with an advantage. The good thing about this position is that, the jaw can perform two motions at the same time. The single jaw crusher has the same swinging door as the double one, with one difference, it can move up and down from the eccentric as well.