A&B Series Unit Specifications
| A&B Series Hammer Mill Models | ||||||
| Model | Capacity (TPH - Tons Per Hour) |
Horsepower (HP) | Feed Opening (In.) | Speed (Max RPM) | Weight (Without Motor) | |
| 15x12 | 1-4 | 30 | 12"x13" | 3600 | 1100 | Request Information |
| 20x12 | 3-30 | 50 | 15"x13" | 3600 | 2300 | Request Information |
| 20x18 | 4-40 | 75 | 16"x19" | 3600 | 3400 | Request Information |
| 24x20 | 6-60 | 100 | 18"x21" | 2400 | 3100 | Request Information |
| 30x24 | 9-90 | 125 | 26"x26" | 1800 | 5700 | Request Information |
| 30x30 | 11-110 | 150 | 32"x36" | 1800 | 7200 | Request Information |
| 36x36 | 13-130 | 200 | 32"x38" | 1200 | 19500 | Request Information |
| 42x60 | 30-300 | 250 | 23"x66" | 900 | 21600 | Request Information |
Capacities vary depending on feed size, feed rate, operating conditions, desired product output, characteristics of feed material, and equipment configuration.
What is the difference between A and B Series Industrial Hammer Mill Grinders?
"Up running," or the A Series feed grinder, provides multiple size reduction stages for materials, and "down running," or B Series Hammer Mills, are most suitable for fibrous materials due to high concentration of shearing actions within the unit.
Type A “Up Running” Hammer Mill Grinder
The A series grinder uses perforated screens or grate bars for reducing soft to medium hard materials. The material to be reduced determines the rotor construction of a Stedman Hammer Mill. The rotors used in the Type A hammer mills are adjustable to compensate for wear.
- Shattering by revolving hammers
- Impaction against housing liners
- Grinding on the adjustable grinding plate
- Shearing by the grate bars or screen
Type B “Down Running” Hammer Mill Grinder
The B series grinder utilizes specially designed heavy reversible hammers, working in conjunction with Stedman’s adjustable breaker plate enabling the Hammer Mill to produce an exceptionally uniform product with the lowest possible maintenance.
If you're unsure which direction suits your material, contact Stedman to schedule your testing today!
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!
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.
Additional Information
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
Stedman Machine is a leading cement crusher manufacturer with the capability to provide customer service across the globe. Our experienced team will work with you to create the best impact crusher system to make your processes the most efficient. Call us for more information!
A&B Series Resources
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.