Used Kaufman Lowboy Trailers For Sale
Shop used Kaufman lowboy trailers with detachable neck options, heavy haul capacity, deep wells, and spec choices for equipment transport.
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About Used Kaufman Lowboy Trailers
A key buying decision is the detachable neck configuration. Many Kaufman lowboy trailers are hydraulic detachable gooseneck designs, often called an RGN or detachable neck lowboy, which make loading self-propelled equipment faster and safer than fixed-neck trailers. Pony motor setups are common on used units and can be a practical choice for fleets that want independent neck operation without relying on tractor hydraulics. Buyers should pay close attention to the loaded deck height, well length, rear bridge length, swing clearance, and kingpin setting, especially if the trailer will be matched to a specific tractor wheelbase or used across states with different bridge formula requirements.
Typical specs in this class include widths around 102 inches, deck lengths configured with a main well and rear deck, outriggers for wider machinery, multiple D-rings for securement flexibility, and wood deck sections that are easier to repair after hard use. On heavier spec units, load-bearing fenders, loading ramps, closed tandem arrangements, and air ride suspension may be present. Tire size also matters. Low-profile 22.5 tires can help maintain lower loaded height, while wheel and suspension condition will affect ride quality and maintenance cost. On a used Kaufman lowboy, it is worth checking neck cylinder condition, deck straightness, crossmember integrity, bushing wear, suspension components, brake life, and any stress around ramp hinges, outriggers, and securement points.
Kaufman lowboy trailers appeal to buyers who need straightforward heavy haul capability without stepping into specialized multi-axle transporter territory. They are often a fit for excavators, dozers, compactors, loaders, and other off-road equipment that exceed standard flatbed height limits. The right spec depends on what you haul most often. A fleet moving mixed construction iron may prioritize a versatile 40-plus ton trailer with a usable well and strong securement package, while a dedicated machine hauler may focus more on exact deck geometry, neck operation, and axle placement. When comparing used Kaufman lowboys for sale, the best value usually comes from matching capacity and deck design to your actual freight rather than buying solely on ton rating.
Frequently Asked Questions
What is a Kaufman lowboy trailer used for?
A Kaufman lowboy trailer is used to haul heavy equipment that is too tall or too heavy for a standard flatbed or deckover trailer. Common loads include excavators, bulldozers, wheel loaders, rollers, pavers, and other construction or agricultural machines. The low deck height helps keep overall loaded height within legal limits while providing stable loading and transport.
What should I check on a used Kaufman lowboy before buying?
The priority items are structural condition and operating systems. Inspect the frame rails, crossmembers, deck, neck connection points, outriggers, D-rings, ramp or detachable neck components, suspension, brakes, and tires. On hydraulic detachable neck models, check cylinder operation, hose condition, locking mechanism wear, and whether a pony motor or hydraulic system functions correctly. Uneven tire wear, deck sag, cracked welds, and slop in suspension components can point to expensive repairs.
What is the advantage of a hydraulic detachable neck lowboy?
A hydraulic detachable neck allows equipment to be loaded from the front after the neck is removed, which is faster and generally safer for many tracked and wheeled machines than climbing steep rear ramps. It also improves loading angle for lower-clearance equipment. For fleets that move machines frequently, a hydraulic detachable neck can reduce loading time and make the trailer more versatile across different jobsite conditions.
How do I choose the right lowboy capacity and well length?
Start with the heaviest machine you plan to haul, including attachments, fuel, and any added guarding or counterweights that travel with the unit. Then compare that operating weight to the trailer's actual rated capacity and axle group. Well length matters because it determines how the machine fits between the neck and rear deck, which affects axle loading, securement placement, and legal compliance. Buyers should match trailer geometry to the machine's track or wheelbase, not just the gross ton rating.
Are used Kaufman lowboy trailers good for interstate heavy haul work?
They can be, but the trailer spec has to match the loads and the states where it will run. Axle spacing, kingpin setting, rear bridge, overall length, and loaded deck height all affect permitability and bridge compliance. A trailer that works well for local machine moves may not be ideal for multi-state hauling if the axle layout or dimensions limit permitting flexibility. Buyers doing interstate work should review the trailer's exact measurements and intended load profile before purchase.
