Arnold Company

Scott M. Dressler
2955 Trico Drive
Trenton,  IL  62293

United States
Phone: 618-224-7505
Fax: 618-224-7005
  • Booth: 1249

Come see our newest innovation, the Ride-On railcar opener.


Arnold Company is the proud manufacturer of the Door Demon® family of products.  With a heavy focus on improving safety and productivity, Arnold Company offers the largest selection of railcar openers for hopper gates and boxcar doors, the new HTO Hopper Trailer Opener, and our complete line vibrators along with our Rhino Vibrator Lifter.  With over 20 years of experience and an extreme commitment to quality and service, we are sure to have a solution for you.  See the complete line at

Brands: Door Demon Hopper gate openers Door Demon Boxcar Openers Door Demon Hopper Trailer Opener Rhino Vibrator Lifter Railcar Vibration

 Press Releases

  • We have two exciting announcements.   First, we are bringing our newest product to GEAPS, the Ride-On multi-position hopper gate opener.   This unit has been designed specifically for high volume applications.  We've included every upgrade to make this a heavy duty hopper gate opener ready to open hopper gates all day long.

    Also, we are very excited to announce the recent launch of our new Division, Arnco Safety, LLC.   Specializing in on-site Rescue Services, Training, Gas & Dust Monitoring, and Personal Protective Equipment, we are here to be your safety experts. 

    Stop by the Arnold Company booth at 1249 to learn more!


  • Ride-On Multi-Position Railcar Opener
    High volume rail unloading areas require the highest speed, efficiency, and obviously safety. Our new Ride-On railcar hopper gate opener provides all of this, allowing the operator to control the entire unit from a comfortable seated position....

  • This unit features our largest electric over hydraulic system.  With simple hand controls, while seated, the operator can traverse the beam while adjusting drive bit height and position to fit any railcar.  The shaft RPM’s are the fastest in our product line, and our highest torque hydraulic motor is included as a standard feature to ensure that your operation is not slowed down by tough hopper gates.

    To optimize space, the front end of the unit rotates 90 degrees to remove the shaft and drive bit from the railcar path, and to provide a clear walkway.  This feature, along with customizable shaft lengths, allows for the unit to fit in most unloading areas.

    Utilizing the best features from our existing Multi-Position unit, combined with a completely new sled design and power unit, the new Ride-On Hopper Gate Opener is ready to handle your biggest challenge.  See below for detailed benefits and features.

  • Door Demon HTO Hopper Trailer Opener
    Everything about the patented Door Demon HTO Hopper Trailer Opener has been designed from the ground up specifically for truck hopper trailers....

  • Everything about this unit has been designed from the ground up specifically for truck hopper trailers.  Our customers made it clear that they needed the flexibility of a handheld unit with enough torque to get the job done, but not too much to avoid damage to the hopper trailer gate components.  

    Rotation speed was also a critical factor, as the user needed to open the gate in an efficient, yet controllable manner.  Weight was crucial as the unit had to be light enough for the user to operate it all day long. The patented* Door Demon hopper trailer opener (HTO) combines all of those requirements into a feature-rich unit with a custom shaft and socket assembly designed for the task at hand.


    • Prevents operator injury
    • Prevents grain trailer damage
    • Single-person operation
    • Handheld, lightweight, portable
    • Automated, but safe on trailer gates

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