The jaw crusher compresses the rock between a fixed jaw and a moving jaw to create breakage. The return motion of the moving or 'swinging' jaw permits feed to enter the crushing cavity and sufficiently broken material to discharge by gravity. The maximum dimensions of the feed opening, universally employed to designate the crusher, are termed the 'gape' and the product size is largely determined by the width of the discharge aperture when the moving jaw has retreated fully--the 'open side setting'. The reduction ratio possible is usually in the range 4:1 to 6: 1. The moving jaw may be actuated by one of two principal mechanisms--'single toggle' and 'double toggle'.
Camelway's single and double toggle jaw crusher installations include some of the largest primary jaw crushers ever built. Both the single and double toggle jaw crushers are constructed of heavy duty fabricated plate frames with reinforcing ribs throughout. The crusher’s components are of high strength design to accept high power draw. Manganese steel is used for both fixed and movable jaw faces.