Operating principle and design of hammer crusher

2026-04-16

Hammer crusher is a widely used equipment for medium and fine crushing in industries such as mining, building materials, metallurgy, chemical industry and feed production. As a professional Chinese B2B supplier, we have been supplying high-performance and reliable hammer crushers as well as complete line solutions to overseas markets for a long time. The equipment is suitable for crushing various medium-hard and brittle materials, featuring mature structure, easy maintenance and high adaptability, especially effective for industrial applications in Russia and the CIS countries.

Working principle of hammer crusher

A hammer crusher is powered by an electric motor, which spins a rotor at high speed, causing the hammers on the rotor to move in unison. After feeding the material into the crushing chamber, it is subjected to intense impact from rapidly rotating hammers and is instantly destroyed.

First, the material is subjected to primary impact crushing by hammers, then it is thrown onto the inner walls of the chamber or reflective plates, where secondary and repeated crushing occurs due to impact, reflection and shear. During a continuous impact cycle, the material is gradually crushed to the required fraction.

When the particle size reaches a predetermined value, the material passes through the screen openings and exits the crushing chamber, moving on to subsequent transport or processing stages, providing a continuous and highly efficient crushing process. This design of the hammer crusher ensures a high crushing ratio, product uniformity and high productivity.

Operating principle and design of hammer crusher

Internal structure

1、Frame (body)

The frame of the hammer crusher is the main supporting structure, including the upper and lower parts of the body, side walls and bearing units. The structure is made of high-strength welded steel. High manganese steel lining plates are installed in key areas to improve wear resistance and extend equipment life. All elements are connected with high-strength bolts, ensuring structural rigidity and stability under long-term high loads.

2、Drive unit

The drive system of the hammer crusher consists of an electric motor, a flexible coupling and a main shaft. The motor directly drives the shaft through the clutch, reducing energy loss and increasing transmission efficiency. The shaft is mounted in spherical self-aligning bearings, which compensate for small deviations and ensure stable operation of the equipment.

3、Rotor system

The rotor is the main working unit of a hammer crusher and consists of the main shaft, rotor discs, pins and hammers. Under the action of the motor, the rotor rotates at high speed, providing continuous impact crushing of the material. The rotor design is optimized in terms of dynamic balancing, which ensures low vibration levels and stable operation during long-term operation.

4、Hammers

Hammers are a key element directly involved in the crushing process. Their quality, material and design directly affect the performance and energy consumption of the equipment. The hammers are secured to the rotor with pins and, when rotated, exert a powerful impact on the material. Depending on the operating conditions, high-manganese steel or alloy wear-resistant steels can be used.

5、Reflective plates

Reflective plates are installed inside the crushing chamber and are constantly exposed to shock and abrasive loads. They are made of high-manganese hardened steel, offering high wear resistance and impact resistance, providing long service life and improved crushing efficiency.

6、Sieve device

The screen consists of an arc-shaped frame and sieve elements installed under the rotor. It is used to control the size of the product. Particles of the required size pass through the holes, and larger ones are returned to the crushing zone, ensuring uniformity of the final product.

Advantages as a B2B supplier from China

As a professional Chinese hammer crusher manufacturer for B2B market, we have a complete system of design, production and export service, and offer stable supply and customized solutions for customers from Russia and neighboring regions:

- Large-scale production： direct supply from the factory, supporting large orders and long-term cooperation

- Individual design: adaptation of the design to the hardness, humidity and productivity of raw materials

- Strict quality control： pre-shipment testing including balancing and performance testing

- Export experience： knowledge of international logistics and technical standards of the Russian market

- Service support: remote technical support, supply of spare parts and optimization of equipment operation

Through continuous improvement of design and production processes, our hammer crusher provides high stability, wear resistance and low operating costs, fully satisfying the requirements of Russian industrial enterprises for reliable crushing equipment.

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