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  • Size Reduction Equipment

Particle Size Reduction Machines

What is Size Reduction?

"Adding energy to a material to make large pieces smaller"

Energy + Material = Size Reduction

Different types of size reduction equipment are available and each has its own method of reduction. The right machine for the task is the one that can add energy most efficiently for the application.

From the beginning of time, humans have found it necessary to make little pieces out of big ones – stone, ore, ice, grain and more. It was a slow, laborious process for many centuries. Then in the Stone Age came the first breakthrough – we call it a hammer – and it worked better than ever. It worked so well, in fact, that it's still one of the most widely used tools in the world.

Today, there are many different size reduction machines available to make little pieces out of big ones. Particle size-reduction equipment includes primary impact crushers and secondary crushers as well as milling machines - cage mills, hammer mills, pulverizers and grinders.

Stedman manufactures a full line of particle size reduction equipment — primary impactors, secondary crushers, tertiary impactors, plus cage mill pulverizers, fine grinders, hammer mill crushers and lump breakers for the aggregate, mining and industrial markets. Materials processed fall into broad categories including abrasive, non-abrasive, wet or dry, sticky and friable. Stedman's experience evaluating these factors helps target the correct equipment for each unique project.


Test Before You Buy™
The Stedman Testing and Toll Processing Facility is the place to test your material in our full size equipment. If it can be crushed, ground, pulverized or mixed, chances are we’ve done it. We have more than 10,000 test reports to help get you to the best solution quickly.

Impact Crushers

Impact size reduction incorporates striking to pulverize material. The primary types of impact crushers include horizontal shaft impactors (HSI), cage mill pulverizers, and vertical shaft impactors (VSI).

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Cage Mills & Pulverizers

Invented by Nathan P. Stedman, a cage mill is an internally fed impactor that crushes grinds or pulverizes many different materials to specified degrees of fineness.

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Hammer Mills

A hammer mill is a crusher that can grind, pulverize, and crush a wide range of materials. This crusher employs a rain of hammer blows to shatter and disintegrate the material.

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Fine Grinders

Stedman fine grind products include modern air swept material handling and classification methods to efficiently produce consistent finely ground powder products.

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Lump Breakers

Lump-breaking equipment is able to reduce lumps created in the production, storage or transportation of bulk solids and powders - without generating excessive dust and fines.

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Reconditioned Units

Stedman brings used equipment back to their former glory through extensive factory reconditioning.

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Custom Designed Systems

Stedman has the engineering experience to design, manufacture, and install custom crushing and material handling systems.

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