Cage Mill Crushers & Pulverizers

What is a Cage Mill and How Does it Work?

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.

Early cage mill crushers were used principally to crush materials that were not particularly abrasive – corn, salt, coal, clay. By 1900, Nathan Stedman had built more than 100 cage mills. After its invention, numerous applications were discovered and soon cage mills were used for crushing chemicals, clay and fertilizer materials. It wasn’t until the 1930s that the true value of cage mills as an agricultural limestone crusher, a size reduction mill and beneficiation was realized. Cage mills can be configured in two, four, and six row designs, each with their own unique crushing applications.

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What Industries Use Them?

  • Limestone
  • Calcium Carbonate
  • Coal
  • Corn
  • Potash
  • Hydrated Lime
  • Clay & Shale
  • Seashells/Oyster Shells
  • Salt
  • Slag
  • Fertilizer
  • Detergent
  • Gypsum
  • Activated Carbon
  • Distilled Dry Grains (DDG and DDGS)
  • Sandstone
  • Tungsten Carbide
  • Aluminum Dross/Slag
  • Brick – Commercial & Residential
  • Pavers & Roof Tile

Cage Mills from Stedman Machine Company

Stedman’s range of multi-cage mills and pulverizers includes the H-Series, F-Series for sticky, high moisture and Y-Series designed for less abrasive material applications.


Test Before You Buy™ at Stedman’s Testing and Toll Processing Facility
The Stedman Testing & 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.

H-Series™ Cage Mill

The Stedman H-Series™ multi cage mill is best at pulverizing, grinding, crushing and mixing abrasive and non-abrasive materials – wet, sticky or dry.

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F-Series™ Cage Mill

The F-Series™, or Flared Series, Cage Mill features a unique flared discharge opening, efficiently reducing the wettest and stickiest of materials without clogging.

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Y-Series™ Cage Mill

The Y-Series™ is a selective crushing, controlled-impact, multi-cage mill designed for sizing thousands of minerals and agglomerates, including wet and tacky materials.

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