Rotating Dollies |
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The rotating dollies are made to maneuver heavy loads in confined spaces. The rollers swivel individually 360 degrees. This gives the dolly omni-directional maneuverability and also lets you turn the load in place. This maneuverability lets you move a heavy load that is on dollies down a narrow corridor and turn around a tight 90 degree turn.
The dollies have a low profile so the load and equipment stays very close to the ground, providing more safety and low head clearance. The smaller load dollies come with a single roller per swiveling foot. The rollers change direction easily, even under maximum load weight. Heavier loads exert such high pressure onto the rollers that traditional rollers have a difficult time turning into a new direction. Crow bars often have to be used to turn the rollers.
Our specially designed dollies are always easy to move. For heavier loads, our larger dollies are outfitted with double rollers. Unlike a traditional wide roller, our double rollers can turn in opposite directions when spinning in place. They can rotate on one spot. This eliminates the opposing friction forces and makes for easy turning.
To aid the easy turning, our specially formulated JUWAmid is a roller material with slick turning characteristics that reduces the “rubber effect” friction when spinning in place. The rollers are mounted in rotating cassettes which lead the rollers into the turn. This “follow-behind” design assists for easy turning of heavy weights.
The rollers will also not damage or mark floors, even on tile or sensitive epoxy. A pulling handle or a connecting bar can be attached to the dolly via its side arm. These pulling handles and connecting bars are sold as optional accessories, but please note:
- The pulling handle locks in a straight position and cannot
be used to turn.
- It can only pull the load in a straight line.
- The connecting bar (which connects two dollies together) is
used for a 4 dolly configuration.
- It will drag along any dolly that has lost
contact with the load due to a recess in the ground. In most applications, the dollies are used without handles
and connecting bars.
If you are using 4 dollies or more and are worried about
slippage, the larger dollies come with a center hole in each loading pad which
allows you to use a holding bracket or tie down rope to affix the dolly to the
load. As discussed in the “3-point vs. 4-point support” slide
show, the safest, most efficient transport configuration consists of a 3-point dolly support.
The weight of the load presses down on each dolly at all
times in a 3-point system. This will prevent the dollies from slipping – even
on uneven ground.
If you are using 3 dollies, we recommend spacing the dollies
evenly apart so that each dolly will carry the same weight, creating the maximum
load capacity for the set.
So instead of spreading three dollies apart between the
front and back end of the load…
...which places more weight on the single removed dolly (which
is the one placed on the opposite end of the two which share weight)…
…you may consider placing the rear dollies further into the
load to distribute the weight more evenly. For example, if you have a 20 ton
load and place two dollies at the rear corners with one at the front, the one
at the front will carry ten tons while the dollies in the back will carry 5
tons each. To even out the load carrying, you can move the back dollies forward
until each dolly holds 6.5 tons and evens out the weight on the dolly system.
If you have to spread the dollies apart, you can
alternatively place two dollies as close as possible to simulate a single
contact point at the end where there would regularly be just one dolly in the
3-point system. The weight is now more evenly divided between the dollies but
there is still a 3-point system.
If you are having to use a 4-point system because your load
sits on four legs or I-beams, please monitor that the rotating dollies do not
slip out when weight is lifted off one dolly on uneven ground.
If the load of a 4-point system is able to rock on an uneven
surface, the weight is carried by the remaining dollies. Make sure you have
enough safety capacity on all dollies in case one dolly loses contact with the
load.
To fit your application needs, you can mix and match the
rotating dollies with our other transport dollies of the same height.
If you do not need as much maneuverability, please compare
the rotating dollies to our steerable & straight-line transport dollies
which are more economically priced.
And please feel free to call us with any technical
questions. 1-800-786-6112
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