The common jaw crusher parts include:
Jaw Plates: These are the main wear parts of a jaw crusher. They are fixed on the jaw crusher's movable jaw and stationary jaw, and they come in various profiles (such as straight, corrugated, and toothed) to suit different crushing applications. Jaw plates are subjected to high wear due to the crushing action and need to be regularly replaced.
Toggle Plate: The toggle plate is a structural component that connects the movable jaw to the toggle block and transmits the crushing force. It acts as a safety device, protecting the crusher from overload by releasing the tension on the jaws in case of excessive pressure.
Pitman: The pitman is the main moving part of a jaw crusher. It connects the eccentric shaft to the movable jaw and enables its reciprocating motion. The pitman undergoes high stress and must be robustly designed to withstand the crushing forces.
Eccentric Shaft: The eccentric shaft is a critical component that transmits the rotational motion from the motor to the movable jaw. It has a circular shape and is mounted on bearings. The eccentric motion of the shaft helps in generating the crushing action.
Bearings: Jaw crushers have several bearings that support different parts and allow smooth operation. These include the main bearings for the eccentric shaft, as well as the bearings for the pitman, flywheel, and toggle/block.
Flywheel: The flywheel is a heavy-duty rotating component connected to the eccentric shaft. It helps in storing and releasing energy during the crushing process, contributing to the smooth operation of the crusher.
Tension Rods and Springs: Tension rods and springs are used to maintain the proper tension of the toggle plate and ensure the desired jaw opening size. They play a role in adjusting the discharge setting and controlling the particle size output.
Wedges: Wedges are used to adjust the jaw crusher's discharge opening and control the product size. They are inserted between the toggle plate and the main frame, allowing for easy adjustment of the jaw crusher's closed-side setting.
Cheek Plates: Cheek plates are located on the sides of the crusher's frame, protecting it from wear and providing structural support. They are usually made of manganese steel or a similar high-strength material.
Bolts, Nuts, and Washers: These are the fasteners used to secure and assemble various jaw crusher parts. They ensure proper alignment and structural integrity of the crusher components.
These are the common jaw crusher parts, but it's important to note that the specific design and configuration of parts may vary depending on the jaw crusher model and manufacturer.