WHAT IS A JAW CRUSHER

This is a type of crusher that is widely used in the primary and secondary crushing processes.

It is usually preferred for the crushing of large blocks of hard and abrasive materials.

THE DIFFERENT TYPES OF JAW CRUSHER

There are two main groups of jaw crushers, categorized according to their jaw movement mechanism.

• Single-toggle jaw crushers

• Double-toggle jaw crushers

SINGLE TOGGLE JAW CRUSHERS

In single-toggle jaw crushers, the movable jaw is supported by the bearing on an eccentric shaft driven by the pitman to which it is attached. The pitman is supported by a toggle plate at the bottom of the moveable jaw. Toggle plate compressed between moveable jaw and main body. This mechanism ensures that any point on the moving jaw moves in an elliptical orbit. This mechanism makes a movement aka four bar linkage movement. Through this movement, the movable jaw applies both pressure and friction forces to the material to be crushed.

DOUBLE TOGGLE JAW CRUSHERS

In double-toggle jaw crushers, the pitman is mounted on fixed non-eccentric shaft that situated at the top of the crusher. There are two toggle plates, one on the left and one on the right, are linked to the pitman that is hinged to the driven camshaft. The toggle plate on the left is linked to the jaw-supporting block, while the one on the right is linked to the main body.