Jaw crusher is a widely used crushing equipment, mainly used to crush ores and rocks of various hardness into smaller particles. Its main components and their functions are as follows:

Jaw Plates: Jaw plates are the main working parts of jaw crusher, which are divided into fixed jaw plates and movable jaw plates. The space between the two is called the crushing chamber, where the material is crushed by squeezing, splitting and bending. Jaw plates are usually made of wear-resistant materials, such as high manganese steel, to resist the wear of materials.
Eccentric Shaft: The eccentric shaft is a key component that drives the movable jaw plate to reciprocate. It is usually made of high-quality carbon steel with sufficient strength and rigidity to withstand the impact and torque generated during the crushing process.
Bearings: Bearings are used to support the eccentric shaft and allow it to rotate. They bear huge pressure and friction from the eccentric shaft and the crushed material, so they are usually made of high-strength, wear-resistant alloy steel or special materials.
Pulley: The pulley is used to transmit the power of the motor to the eccentric shaft, thereby driving the operation of the jaw crusher. It is usually mounted on one end of the eccentric shaft and connected to the motor through a belt.
Flywheel: The flywheel is an important component of the jaw crusher. It stores energy and releases it during the crushing process to provide stable crushing force and reduce impact. The flywheel is usually located at the other end of the eccentric shaft, opposite to the pulley.
Adjustment Device: The adjustment device is used to adjust the gap between the jaw plates to control the particle size of the crushed product. It usually includes a screw, spiral or hydraulic device, etc., which can easily adjust the distance between the jaw plates.
Base: The base is the supporting structure of the jaw crusher, which is used to fix and support the entire equipment. It is usually welded from heavy steel plates and has sufficient strength and stability to withstand the weight and vibration of the crusher.
The above are the main components of the jaw crusher and their functions. These components work together to enable the jaw crusher to crush various materials into the required particle size efficiently and stably.