Up & Down Running Hammer Mill
The ideal grinder necessary is determined by feed size, feed rate, operating conditions and desired product output for processing. Stedman offers two types of industrial hammer mill grinders that transform the consistency of soft and rough materials by using the pulverizing technique of a hammer mill grinder to produce a finished particle.
What is the difference between A and B Series 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
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
The B series grinder utilizes specially designed heavy reversible hammers, working in conjunction with Stedman’s adjustable breaker plate enables the Hammer Mill to produce exceptionally uniform product with the lowest possible maintenance.
If you're unsure which direction suits your material, contact Stedman to schedule your testing today!
A&B Hammer Mill Applications
- Calcium Carbonate
- Coal
- Stone
- Graphite
- Salts
- Soap Powder
- Crab, Clam & Oyster Shells
- Biomass
- Wood Waste
- Biofuels
- Grains
- Fish Meal
- Sugar Cane
- Corn Stalks
- Cracklings
- Meat Meal
- and many more...
| Model | Capacity (TPH) | Horsepower (HP) | Feed Opening (in.) | Speed (Max RPM) | Weight (without motor) | |
|---|---|---|---|---|---|---|
| 15x12 | 1-4 | 30 | 12"x13" | 3600 | 1100 | Quote » |
| 20x12 | 3-30 | 50 | 15"x13" | 3600 | 2300 | Quote » |
| 20x18 | 4-40 | 75 | 16"x19" | 3600 | 3400 | Quote » |
| 24x20 | 6-60 | 100 | 18"x21" | 2400 | 3100 | Quote » |
| 30x24 | 9-90 | 125 | 26"x26" | 1800 | 5700 | Quote » |
| 30x30 | 11-110 | 150 | 32"x36" | 1800 | 7200 | Quote » |
| 36x36 | 13-130 | 200 | 32"x38" | 1200 | 19500 | Quote » |
| 42x60 | 30-300 | 250 | 23"x66" | 900 | 21600 | Quote » |
Capacities vary depending on feed size, feed rate, operating conditions, desired product output, characteristics of feed material, and equipment configuration.
We will give you an “Up” or “Down” answer!
The Stedman Testing & Toll Processing Facility is the place to test your material in our full size hammer mill. 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 this article that ran in POWDER BULK ENGINEERING magazine.
