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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!


Skid Steer Mounted Door Demon®
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Skidsteer Mounted Door Demon

Skid Steer Mounted Door Demon®





NEW FOR 2012: 20% Torque Power Increase. We are now using a new Char-lynn drive motor that provides the extra torque you need!

The Skid Steer Mounted Door Demon® weighs just under 400 lbs. We use the standard quick attach mounting system. If yours is different from “standard”, we can usually accommodate your situation.

This unit has two pivoting points. The boom itself goes both left and right, then the head also turns left and right. These positions are locked in place with a simple 1” pin. The Demon has a 5 ft reach in all directions so it is past the tires and will clear many obstacles.

Of course the hydraulic hoses hook into your auxiliary line with controls to the driver. The flow controls require 2 gpm (gallons per minute) @ 2950 psi to give maximum torque. This pressure is obtained by most skid steers and is usually no problem but still check with your manual.


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