The Arnold Company | Manufacturer of the Door Demon

(800) 245-7505 | (618) 224-7505

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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.

Type	Document (Product) Title	View	Size

	Digital Edition of Complete Product Brochure

	Electric Hopper Gate Opener (with Sideshift and Lift Options)		318 KB

	Pneumatic Hopper Gate Opener (with Lift Option)		735 KB

	DC (Battery Powered) Hopper Gate Opener (with Lift Option)		94 KB

	Demon Stick Manual Hopper Gate Opener		321 KB

	Three Wheel "Spider" Hopper Gate Opener		832 KB

	Beam Mounted Hopper Gate Opener		246 KB

	Fork Mounted Hopper Gate Opener		1,029 KB

	Skidsteer Mounted Hopper Gate Opener		464 KB

	Conveyor Mounted Hopper Gate Opener		324 KB

	Freight Car Plug Door Opener		493 KB

	Portable Winch Freight Car Door Opener		752 KB

	Double "DR" Winch Freight Car Door Opener		792 KB

	Portable Plug Door Opener		536 KB

	Presentation from PaperCon 2010 Show in Atlanta, Georgia		1,547 KB