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About Us

Southwest Mill Supply

Since 1925 Southwest Mill Supply Company is not only the original manufacturer for hammermill replacement parts, but has also maintained a line-up of cutting edge wear parts with exceptional quality and performance that help end-users meet their requirements. Using our capabilities in technology, manufacturing, engineering support and distribution, we provide our customers with smart, cost effective solutions that outperform the competition. Our innovative designs incorporate features that can withstand the most demanding application conditions.

From our leading weld technology for maximum wear life, high-alloy steel options, we know how critical quality materials are to product performance. At Southwest Mill Supply, our brand stands for outstanding quality, from product design, service and delivery, all add up to unbeatable value for customers everywhere. Whether standard to premium custom hammers, screens, rods, spacers, or other products for your hammermill needs.

Our History

Southwest Mill Supply was formed as a proprietorship by Mr. A.D. Swartz in the early 1920s. As a salesman for agricultural related products he saw a need for replacement hammermill hammers by many of his customers. He began manufacturing hammers in his basement and delivered them as he made his regular sales calls.

During the early 1930s SMS began supplying screens to compliment their hammers and became the first “full service” replacement parts supplier. Mr. Swartz moved the operation from his basement to, 232 North Baltimore, sometime during the 1930s. The original building had been added onto several times through the years, until the new facility was erected in 1994.

In 1946, Mr. and Mrs. Charles Ackerman bought the business and operated it jointly until Mr. Ackerman’s death in 1966. Mrs. Ackerman continued to run the business with the assistance of a very knowledgeable and dedicated plant manager, Mr. Ben Graves. In 1977 the present ownership purchased the assets of the company and has continued to operate at the same location.



Slimline Performance Hammer

The ultra-thin Slimeline fusion hardfaced hammermill hammer offers improved performance for fine grind applications. The greater impact areas offer a reduction in energy consumption, increased fines and gained capacity. Download a PDF flier of the Slimline Hammermill Hammer.   …Read more


See how easily you can save on superior quality of wear parts. Get your quote online or over the phone and compare. …GET A QUOTE TODAY!


Southwest Mill Supply Company
232 N Baltimore Ave
Kansas City, MO 64116

1-800-899-4072 toll free
1-816-471-4072 local
1-816-471-4544 fax