What is a Full Circle Hammer Mill?
The Stedman Full Circle Hammer Mill is a fully reversible air-swept mill that targets a finer end product while increasing production capacity. It is perfect for a wide variety of industries where materials must be ground into a smaller particle size than a standard hammer mill. Our standard hammer mill uses a rain of hammer blows to shatter, crush and disintegrate materials, usually rocks and minerals, upon impact. The size of the finished product depends on the openings in screens or grates; the number, size, and type of hammers; the grinding plate setting; and the rotor speed.
Our full-circle hammer mill incorporates a turbulence channel at the bottom of the rotor which interrupts the material flow before returning it to the path of the hammers. This unique of the air swept mills design delivers a finished product with much smaller – usually medium to fine – particle size.
Stedman’s full-circle hammer mill is perfect for a wide variety of industries where materials must be ground into a smaller particle size than a standard hammer mill.
Air Swept Hammer Mill Benefits
Stedman’s full circle hammer mill boasts the features you require to deliver the finer grind you want:
- Higher throughput due to the greater screen area
- Air swept design allows the mill to operate lower temperatures, preventing stickiness or other heat problems
- Handles up to 35 tons per hour
- Compact size means small footprint
- Accessible doors
- Quick release screens
- Reversible adjustable intake
Full Circle Hammer Mill Features Built to Reduce Downtime and Heat
Every feature on our full circle hammer mill solves a specific problem we've seen on production floors, from overheating on sticky material to slow screen changeouts during a shift change.
- Air-Swept Design Runs Cooler: Because our full circle hammer mill is air-swept, it operates at lower temperatures than a standard hammer mill. This matters most on material that gets sticky or gums up equipment when it overheats, so you spend less time stopping the line to clear buildup.
- Larger Screen Area Increases Throughput: The greater screen area on our full circle design gives us higher throughput, up to 35 tons per hour, without needing a larger machine footprint. The compact size keeps your equipment footprint small even as capacity goes up.
- Quick Release Screens and Accessible Doors Cut Maintenance Time: We built quick-release screens and accessible doors into this mill specifically to cut the time your crew spends on screen changes and interior inspections. The reversible adjustable intake also means we can configure the mill to match your material flow rather than forcing your process to match the machine.
Full Circle Hammer Mill Resources
Industries
Stedman Machine Company’s line of size-reduction equipment is found in industries and applications from A-to-Z. In fact, it would be easier to list the industries that don’t employ some type of size-reduction equipment!
Asphalt Crushers
The HSI, asphalt crusher, specifically engineered for the asphalt industry, reduces RAP to the required size quickly and easily for further processing.
Rock & Aggregate Crushers
Specialty uses of limestone include the manufacturing of pharmaceuticals, toothpaste, paint, paper, caulking, and glass.
Energy & Biomass Pulverizers
One of the first uses for the cage mill was as a coal pulverizer. By 1900 Nathan Stedman had built more than 100 cage mills designed to crush coal.
Ceramic & Brick Clay Crushers
Stedman revolutionized material preparation for the brick, clay, and ceramic industries by introducing more cost-efficient processes.
Size reduction for a variety of minerals
Stedman crushers, mills, and grinders are used in nearly every mineral and mining industry. Whether you are processing coal, rock, salt, iron ore, wood chips or clay, we have your solution to size reduction.
Industrial Food Rendering Crushers
Stedman ensures nothing goes to waste by delivering reliable, durable pulverizers and crushers perfect for handling food waste and food rendering.
Agricultural Crushers
Stedman delivers high-performing pulverizers crushers perfect for agricultural uses including crushing lime, processing animal feed, and reducing grain corn.
Industrial Herb & Spice Crushing Equipment
Stedman delivers high-performing, low-maintenance pulverizers crushers ideal for large-scale grinding, milling, and processing of herbs and spices.
Grain Processing Equipment for Distilleries
Stedman delivers high-performing, low-maintenance pulverizers & crushers ideal for large-scale grinding and milling grain and corn to supply distilleries.
Fertilizer Crushing Equipment
Stedman’s reliable, durable lump breakers, chain mills, and cage mills are expertly engineered, sturdily constructed, and rigidly tested to meet the specifications you require for heavy-duty fertilizer processing and size reduction.
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. To learn more about what to expect from testing, read our article that ran in POWDER BULK ENGINEERING magazine.
Why Stedman?
Delivering equipment and service you deserve
For nearly two centuries, Stedman Machine Company has produced quality, reliable and durable size reduction and industrial crushing equipment. Stedman has expert field service and installation technicians ready to assist with all maintenance and equipment commissioning needs.
- Unsurpassed industry experience – operating since 1834
- State-of-the-art equipment testing facilities
- Dedicated, professional staff
- Parts and service available 24 hours a day
Frequently Asked Questions
A standard hammer mill lets material pass through as soon as it clears the screen or grate opening, so particle size depends mostly on screen size, hammer setup, and rotor speed. Our full circle hammer mill adds a turbulence channel that recirculates material back through the hammers before it exits, which lets us produce a finer, more consistent particle size on the same footprint.
Yes. The air-swept design keeps operating temperatures lower than a standard hammer mill, which is what causes sticky material to gum up equipment in the first place. If your material tends to build up or clog other crushers when it heats up, this design is worth testing.
Our full circle hammer mill handles up to 35 tons per hour, driven by the larger screen area built into the design. Actual throughput depends on your material's hardness, moisture content, and target particle size, which is why we recommend testing your specific material first.
Yes, it's fully reversible with a reversible adjustable intake. Reversibility lets us extend hammer wear life by running the rotor in both directions, and it lets you adjust the intake configuration to match changes in your material flow without swapping equipment.
Yes. We build a Copper Line Hammer Mill designed for the distilled spirits industry. If you're processing grain for distilling and need a mill built around that specific material, that model may be a better fit than the full circle design, and we can help you compare the two based on your material.
It comes down to your target particle size. If a coarser product works for your process, our standard hammer mill crusher, available in Type A "up running" and Type B "down running" configurations, may be all you need. If you need medium to fine output at higher throughput, the full circle design is built for that. Send us your material specs and we'll recommend the right one.
Contact Us
Our 24 hour parts and service department along with our inventory of wear parts allow us to provide the fastest response time for parts and service.