Jaw crushers are generally the most important parts of the crushing and screening plant. It is mainly used as primary crushers. Their main purpose is to reduce the rocks to smaller sizes for the next crushing stages. Jaw crushers are a popular alternative to primary impact crushers as they can efficiently process large amounts of hard material. Due to their smaller physical dimensions, jaw crushers are also ideal for narrow areas such as underground mining and applicable for mobile crushing-screening plants.
¾ Excellent material feeding capacity thanks to aggressive pitman movement.
¾ The toggle plate provides more crushing performance with an optimum working angle.
¾ Wear-resistant manganese liners reduce operating costs.
The material size to be fed, the desired product sizes and the desired hourly capacity determine the type of jaw crusher to be selected.
JAW CRUSHER SECTIONS
The jaws are manufactured from manganese steel casting to provide high strength and flexibility, as well as wear resistance. It is also reversible. The most abrasion occurs in the lower part of the jaw.
Fixed Jaw Group: It consists of fixed cheek plates and fixed jaw wedge, which is directly involved in the crushing process. They are mounted on the body sheet with a strong welding construction.
Movable Jaw Group: Movable jaw group carries the breaker plate and clamping wedges on it. The bearing cases are precisely processed with the same axis. The jaw crusher plate is made of manganese alloy wear-resistant special cast steel and its back surface is processed to ensure a perfect fit on the body of the jaw. Early abrasion occurs at the ends close to the outlet. The lifespan of the cheek plates can be increased up to four times by reversing them.
The safety plate is a swinging element between the pitman lower point and the safety plate slot, and when the unbreakable material enters into the crusher, it breaks and works as an insurance element or, in other words, as a safety element. When the eccentric shaft rotates, the safety plate, the pitman and the movable jaw enable to perform downward crushing motion.
SIDE LINING PLATES
The side liners are responsible for keeping the jaw in place and forming the crusher chamber. They are made of manganese alloy wear-resistant steel casting. They are manufactured as separate pieces and bolted on the body for easy change in case of wear.
BEARING GROUP AND ECCENTRIC SHAFT
The crusher bearing cases consist of two parts, the lower part connected to the crusher body by welding and the upper cap which is bolted to the lower part.