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Upper works trailer

New Product – Holland Maxer

HOLLAND MAXERTM Trailer for Crawler Cranes
The Holland MaxerTM trailer is the solution to haul your crawlers faster and for less expense. Time is money and you will be down the road faster and easier with the Holland MaxerTM.

Features & Benefits

  • Four or five axle configurations
    • This creates the ability to meet tighter road restrictions
    • Use a three or four axle tractor to pull
  • Optional sixth and seventh axle configurations for extreme axle requirements
  • Caster axles with locks
    • Improved maneuverability
    • Increased tire life
  • Lift axles for
    • Maximum onsite maneuverability by raising axles to shorten the turning radius
    • Allows easier maneuvering for narrow driveways or access roads
    • Saving money, fuel economy, and tire wear by lifting unused axles while empty traveling down the road
  • Larger ground clearance than lowboys – this prevents trailers “getting hung up” while maneuvering
  • Stable suspension for high center of gravity load
  • Heavy duty 25,000 lbs. axles and suspension
  • High strength alloy chains and hooks for tying down – less chains means less time wasted securing and un-securing loads
  • Built in pull out access steps


  • Optional power tower with limited tilting fifth wheel plate for rough sites requiring more clearance and oscillation
  • Optional manual tower with limited tilting fifth wheel plate to adjust for different truck heights and giving more clearance on rough sites
  • Air scales for axle weights
  • Storage boxes for remotes, rigging, and other crawler setup items
  • Storage locations for outrigger floats for self assembling crawlers

Call today, 641-585-3630 for an estimate on a HOLLAND MAXERTM  trailer! 

A Project for NASA

Our team has designed and manufactured custom solutions for several large-scale projects: the 911 Memorial tree planting system, the launch of a 215 ft long super yacht, and adding mobility to one of the largest mobile stages in North America. 

Our most recent project required HMR Supplies to mobilize an engine section for transport of NASA’s new rocket. Four 55T Holland Dollies and a Holland power unit were used to safely transport the engine. The engine section was loaded onto a barge at the Michoud Assembly Facility in New Orleans then traveled 1,240 miles by river to NASA’s Marshall Space Flight Center in Huntsville, Alabama. 





The size of this engine section is huge, check out the image provided by NASA. Read more about the NASA Project here. 

Call us today at 641-585-3630 to talk to an engineer about your next project.


HMR Supplies – 911 memorial

Remote Controlled Load Transport System 

HMR Supplies completes several large projects every year. A few years ago, our team designed a custom remote controlled tree setting system for planting tress at the 911 memorial. In 2014, we received the patent for this piece of equipment.    

Remote controlled load transport system

HMR Supplies designed the Straddle Mover (a remote controlled load transport system) to meet the special needs of planting trees on the 9/11 Memorial plaza. It was important for the equipment to be able to carry the tree in the center of all the axles, be capable of traversing sideways and able to negotiate openings on the surface of the plaza. There are also up to 8 stories underneath the plaza for access, equipment and a museum requiring low ground pressure and a wider tire base. 

When you see the Straddle Mover up close, on the 9/11 Memorial webcam or on YouTube, it is an impressive site. The knuckle suspension is able to lift and lower the frame and load up to 20 inches. The block and cable system is capable of lowering the load below ground level, and 135 degrees of steering allows the Straddle Mover negotiate the tight quarters on the plaza. A single operator and a remote control operate the straddle mover. 

Although the Straddle Mover was originally designed for moving trees, it can also be used for a variety of applications.   

Creating solutions for custom projects is what we do best. Call us for a quote on your next project.    641-585-3630 

Yacht Move

HMR Supplies and sister companies Atlas Enterprises, a structural moving company, and CR Holland Crane Service worked together to complete a large yacht move in 2013. The superyacht was the heaviest object HMR Supplies employees have transported since it was founded as Ron Holland Housemoving in the early 70s.  At 215-foot long, the 480-ton structure was equipped with a swimming pool on deck that doubled as a helicopter pad when the pool cover closed over the top.

“It’s not the largest thing I have ever driven,” said Chris Holland, president of HMR Supplies and Atlas Enterprises.  “The company also needed the skilled engineering and professional experience of the Atlas team to get the superyacht, which is long enough and heavy enough to be classified as an ocean liner, to the body of water it uses for its sea trails. Due to the size of the superyacht, there was very little room in the fabrication facility for placement of trailers under the yacht.

“The small footprint of our modular Holland Dollies made the move possible,” said Holland.

The move began with two full days of preparation that included completing the bolster and cradle system that had been engineered and fabricated by HMR Supplies.  Once the yacht was securely nestled into the bolster system, the dollies that ultimately carried the superyacht onto the barge were put into position. The move ended after an 8-hour session that required the removal of the doorway header within the fabrication facility due to only three inches of clearance for height and navigation of a 90-degree turn in tight quarters.

“It was highly satisfying to see it all work smoothly,” said Holland. “Several times the margin of error was as low as two inches. I’m incredibly proud of our team,” he said.

Project equipment included 12 Coaster Holland Dollies, 4 Powered Holland Dollies and 2 power units. No push or pull truck was used to move the yacht. Holland said two power dollies placed in front propelled the superyacht out of the fabrication building and through the city streets. To reach the launch area, the structure had to navigate an extremely tight fit between a building and a fence just before making the 90-degree turn.