What Is a Hammermill and What Can It Do for You?

Jan 10, 2020

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A hammermill is one of several types of crushing machines, including impact crushers, jaw crushers, and cone crushers, that is manufactured for the purpose of processing raw materials to reduce them in size. In the crushing industry, there are two types of forces used to reduce the size of materials: impact forces and compression forces. Hammermills and impact crushers use an impact force while jaw crushers and cone crushers use a compression force.

As one of the earliest types of crushing machines to exist, the hammermill has evolved over time to become a very versatile piece of equipment. In the aggregate crushing industry alone, the hammermill is able to crush a wide range of materials, including asphalt, concrete, brick, limestone, and coal, and especially used to process low-abrasive material.

The nature of a hammermill is similar to that of an impact crusher in that it relies on a striking force to fracture and reduce material like aggregate. However, the hammermill is distinguished by its rotor that features a series of hammers, instead of blow bars, that hang loosely, ready to be spun. Once the rotor is in operation, the resulting centrifugal force sends the hammers outward, spinning rapidly in order to crush the material being processed.

What Is a Hammermill and What Can It Do for You?

In the upper portion of the crushing chamber, aprons line the top of the machine. As aggregate is fed into the hammermill and comes into contact with the swinging hammers, it is propelled into these linings that provide a secondary source of impact to further fracture and reduce the material. Just as well, as rocks move through the machine, it is expected that they strike and contact against each other, resulting in even further reduction.

Depending on the type of material needing crushed, the hammers themselves can vary in number, size, and style. In a hammermill used for aggregate crushing, it is typical that the hammers are fewer in number, large, and flat to encourage optimal size reduction. Hammers are typically cast in a solid manganese but can be manufactured from a broad set of metallurgies subject to the needs of the job.

In the lower portion of the crushing chamber, grates line the bottom of the machine. As aggregate and other materials are crushed by the hammermill, they exit the crusher through these grates which are available in a wide range of designs to ensure precise size reduction. Hammermill grates can produce specified top-sized materials with minimum fines, and they can also be interchanged depending on the application.

Eagle Crusher Hammermills are designed for maximum strength at a minimum weight. They are ideal for use when budget and space are limited, particularly as they require a lower initial investment than horizontal shaft impactors (HSI), or when portable mounting is limited. Their replaceable, heavy-duty grate bars assure precise product sizing from 4-inch minus down to 100% minus 3/16-inch.

For complete Eagle Crusher Hammermill product specifications, please visit: its product page.

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Previous Posts

Which Screening Setup Can Optimize Your Crushing Operation?

Portable plants and other crushing equipment can come in many shapes and sizes depending on the needs of a producer. Just as integral to a crushing operation as an impactor or jaw crusher are the screens being utilized to sort product. With so many options and...

Eagle Crusher Company Updates – April 2021

Eagle Crusher Names New Del. and MD. Crushing and Screening Plant Distributor Eagle Crusher Co., Inc. is proud to announce GT Mid Atlantic as the new Eagle Crusher distributor for the states of Delaware and Maryland. The company will represent Eagle Crusher’s full...

Following Lockout-Tagout Procedure to Protect Crushing Personnel

In order to protect team members who are performing maintenance on crushing equipment like portable plants, energy must be completely removed and disconnected from relevant components to make maintenance safe through a process known as an isolation procedure or more...

Optimize Your Crushing with Eagle Crusher’s Configurable Designs

Working in the crushing industry can lead to some unique challenges on the job site. How to best lay out equipment to optimize production? What type of crushers are needed to reduce the material efficiently? Will one crusher be enough for the job? Eagle Crusher is...

Properly Feeding Material for Crushing

On a crushing site, there are many moving pieces and parts that work together to ensure that production is optimized and remains issue-free, like the loaders, the crushers, screening plants, conveyors, etc. Loaders transporting material to the crusher have the...

Reselling Portable Plants & Buying Preowned Crushing Equipment

Portable crushing plants like those that Eagle Crusher manufactures are engineered to be high quality and heavy-duty products in order to withstand the extreme amounts of wear and tear associated with crushing and screening materials like aggregate, concrete, and...

Eagle Crusher Company Updates – March 2021

Eagle Crusher Exhibits at C&D World 2021 The Eagle Crusher sales team exhibited our comprehensive line of crushing equipment and services at the C&D World 2021 Conference & Exhibition, hosted at the AT&T Hotel and Conference Center on March 21...

Wearing PPE and Crushing Safely

Heavy material like aggregate and concrete blocks can move around a crushing site quickly, from the loader, into an impactor, and out across conveyor belts. All of this moving material, paired with the site’s heavy machinery, can present job hazards. Crushing teams...

Powerful Portable Crushing Plants for C&D Recycling

Recycling materials like concrete and asphalt collected from construction and demolition waste through the use of crushing equipment like portable plants is an industry that has seen tremendous success for its positive environmental impact and cost-saving results....

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