Structure of Hammer Crusher


A hammer crusher, also known as a hammer mill, is a crushing machine that utilizes high-speed rotating hammers to strike and impact materials to reduce them in size. The basic structure of a hammer crusher typically includes the following components:


Function: The rotor is the main working component of the hammer crusher. It consists of a spindle, disc, hammer pins, and hammers.
Design Considerations: Rotor design influences the efficiency of the crushing process. Hammers are often attached to the rotor disc by pins.


Function: Hammers are the striking elements that impact the material and break it apart.
Design Considerations: Material composition and shape of the hammers affect crushing efficiency. They are often replaceable for maintenance.

Crushing Chamber:

Function: The crushing chamber is the space where the material is crushed by the hammers.
Design Considerations: The shape and size of the crushing chamber impact the size distribution of the crushed material.

Drive System:

Function: The drive system powers the rotation of the rotor.
Design Considerations: It typically includes an electric motor, gearbox, and drive belts or direct drive mechanisms. Motor power depends on crusher capacity.

Bearings and Seals:

Function: Bearings support the rotor shaft, and seals prevent material from entering the bearing housing.
Design Considerations: Quality bearings and seals are crucial for smooth operation and to prevent contamination.


Function: The housing encases the internal components and provides structural support.
Design Considerations: The housing should be robust to withstand the forces generated during crushing.

Feed Inlet:

Function: The feed inlet allows the material to enter the crushing chamber.
Design Considerations: The design should facilitate a controlled and even feed of material.

Adjustable Breaker Plates (Optional):

Function: Breaker plates can be adjustable and control the size of the crushed material.
Design Considerations: Adjustable plates provide control over the size of the final product.

Control Panel:

Function: The control panel includes the necessary controls for starting, stopping, and potentially adjusting the crusher’s operation.
Design Considerations: Safety features and user-friendly controls should be incorporated.

Important Considerations:

Material Compatibility: The design should consider the type and characteristics of the materials to be crushed.
Maintenance Accessibility: Easy access for maintenance and hammer replacement is essential.
Safety Features: Incorporate safety features to protect operators and prevent damage to the crusher.

Specific designs may vary among manufacturers and models, and consulting with the manufacturer or a qualified engineer is recommended for the most suitable design for your application.