Horizontal directional drilling spent the last decade proving it could replace open-cut for ever more of the underground network. The frontier is now moving back to the heavy end. Vermeer’s new D550 — a 550,000-pound maxi rig leading its class with 100,000 foot-pounds of torque, advanced telematics and onboard diagnostics — marks a new generation of big-bore machines built for the longest, deepest crossings under rivers, highways and rail. At ConExpo 2026 the same engineering trickled down: the utility-class D24 now ships with a factory-installed cab, a first in its class. The result is an HDD range stretching at both ends at once, and a used market that is repricing along with it. Understanding where the new iron lands is the key to buying the older iron well. None of this makes the headline machine the right machine for most contractors, but it resets the reference points — the torque, the data and the comfort that buyers will measure every other rig against, new or used, for the next several years.
How the new generation is reshaping the HDD range
At the top, capability is the headline. More torque, more pullback and smarter onboard systems let maxi rigs take on crossings that were marginal a generation ago, and contractors chasing long fiber, power and pipeline bores under major obstacles are the natural buyers. This is a capital purchase justified by the size of the job, not the size of the fleet.
Comfort and data are migrating down the range. A factory cab on a utility drill and telematics as standard are not luxuries; they cut operator fatigue and let crews log bore data that protects against locating errors and disputes. The features that debut at the top quickly become buyer expectations lower down.
Electric and hybrid options keep advancing in parallel. Fully electric drills such as Vermeer’s D120E already deliver maxi-comparable hole-making with lower noise and emissions, which matters on urban and noise-sensitive sites and gives buyers a third axis — beyond size and price — on which to weigh a rig.
Modernisation at the top feeds the used market below. Each new maxi or next-generation rig that enters a fleet tends to displace a serviceable mini or midi machine, and those rigs — the workhorses of fiber and utility installation — are exactly what most buyers actually need. Supply at the practical end of the range is improving.
Understanding where the new iron lands is the key to buying the older iron well.
Buying a used HDD rig in 2026: what to check
- Size to the bore, not the brochure. Most utility and fiber work is mini- and midi-rig territory; pay for maxi pullback only if your pipeline genuinely includes the long, deep crossings that justify it.
- Read the drivetrain and mud system together. Pumps, rod condition, the carriage and the fluid-management package age with hours and abuse — inspect them as a system and confirm that rod inventory comes with the machine.
- Value telematics and documented bores. A used rig with clean telematics history and logged bore records is lower risk; data continuity is becoming part of what you buy, not an optional extra.
- Match support to your region and weigh electric carefully. Confirm dealer parts and service for the model, and treat early electric drills on their own terms — verify battery condition and charging logistics before paying the premium.