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The Arnold Company is the number one Railcar Gate Door Opener manufacturer in the United States. As home of the Door Demon^® Railcar Hopper Gate Door Opener, we specialize in making custom designed Railcar Gate Door Openers to meet the specific needs of your working environment! We also carry a full line of Industrial Vibrators.

We take pride in our product selection, product quality, and personalized customer service! We offer our customers affordable, practical solutions to their Railcar Gate Door Opener needs and stand behind our products!


Top 10 Reasons: Check out the why your Rail Car Gate Door Opener should come from us!

Information Request Form: Request more information on any of our products today using our quick and simple form!



Frequently Asked Questions: Browse our FAQ section to get answers to the most frequently asked questions, as well as gain valuable insight for your decision-making process!

Arnold Company Door Opener Products are proudly produced in the U.S.A.

The Top Ten Reasons to Buy a Door Demon.......

1.) Low initial cost and low maintenance cost over the life of the door opener.

2.) Guaranteed for 1 year: Parts & Labor.

3.) Fast Service: Average delivery in two weeks.

4.) 30-Day Demo Trial on any unit.

5.) Replacement parts are always in stock!

6.) Highest quality components.

7.) Safety Yellow-Powder Finish.

8.) Longer shaft lengths come standard

9.) Tips are replaceable.

10.) Real, live people answer the phone when you call!