Overhead vs Baseplate Auto Lift: One Urbandale Shop’s First Year

Choosing between an overhead and a baseplate auto lift is the single decision that will shape how a bay works for the next twenty years, and we watched an RV and trailer service shop in Urbandale wrestle with it for most of a spring. They pulled trailers, dually pickups, and the occasional Class C motorhome through their doors, and the bulk of their revenue came from wheel bearing service. Their old setup was a jack-and-stand operation that ate an hour of labor before a tech ever touched a hub. We walked the bay, measured the ceiling, tested the slab, and helped them land on a configuration that still works today. Here is how that first year actually went, from install day through the first real service interval.

Why the Urbandale bay pushed toward overhead

The shop had a 14-foot clear ceiling with open web trusses and no HVAC ductwork running down the centerline of the bay. That is the ideal condition for an overhead configuration, and we said so on the first visit. Overhead means the equalization cables and the hydraulic hose run across a beam above the vehicle instead of through a channel cast into the floor. The floor stays clean and flat, which matters enormously when you are rolling a floor jack, a transmission jack, and a bearing press cart around a dually pickup. It also matters when you are wheeling a trailer axle assembly out from under a fifth wheel and you do not want a two-inch hump in the way.

The counterargument was clearance. An overhead beam sets a hard ceiling on what can drive between the columns, and this shop occasionally saw Class C motorhomes with roof air units. We measured their tallest regular customer at 11 feet 2 inches and the overhead beam on the model we specified sat at 12 feet 4 inches. That gave them a foot of margin, which was enough. If they had been running Class A coaches, we would have steered them to a baseplate arrangement or to mobile columns instead. This is why we do not answer the overhead versus baseplate question over the phone in thirty seconds. The right answer lives in your building, not in a catalog.

What baseplate actually costs you on the floor

Baseplate gets recommended a lot by people who have never worked over one. The pitch is simple: no overhead beam, so anything that fits between the columns can go up. That is genuinely valuable in a low-ceiling building or under a garage door track. What the pitch skips is the floor channel. On a baseplate unit, the cables and hydraulic line cross the bay inside a low steel cover roughly two inches tall and a foot wide. Every creeper, every jack, every parts cart crosses that ramp dozens of times a day.

For a general repair bay, that is a nuisance you learn to live with. For an RV and trailer shop doing wheel bearing service, it is worse. Bearing work means dragging heavy hubs and drums out from under the vehicle on the floor, and it means a solvent tank, a press, and a grease station all shuttling in and out. The Urbandale crew had used a baseplate unit at a previous job and were unanimous about not repeating it. The other quiet cost is service access. When a baseplate cable needs replacing, the cover comes off and the channel has to be cleared of a decade of grease and gravel first. Overhead cable changes are done from a ladder in about half the time. We stock cables for both, but we would rather you pick the one that is easier to maintain.

Concrete, anchors, and the part nobody wants to hear

Before we ordered anything, we cored the slab. This is not optional and we will not skip it. A two-post auto lift concentrates the entire weight of the vehicle plus the equipment into a handful of anchor bolts, and the manufacturer specifies minimum concrete thickness and compressive strength for a reason. Most Iowa shop slabs from the 1970s and 80s run four inches with no rebar and a subgrade that has settled unevenly. That is not enough for a 12,000 lb unit.

The Urbandale building was newer and the core came back at a hair over five inches with decent aggregate, but the section under the west column had a soft spot where an old drain had been abandoned and backfilled. We cut out a four-by-four-foot section, dug it down, and poured a proper footing tied into the surrounding slab. That added a week and a modest line item to the project, and it is the reason their anchors have never needed retorqueing beyond the standard interval. We have been called out to shops where somebody set an auto lift on marginal concrete and the anchors started to pull within eighteen months. The repair costs more than doing it right the first time, and if a column moves under load you have a safety problem, not a maintenance problem. If you want more background on slab requirements, read our writeup on concrete requirements for two-post lift installation.

Install day and the 220v question

Almost every customer asks whether they need 220 volts. The honest answer for a commercial two-post is yes, plan on it. Most units in the 10,000 to 18,000 lb range ship with a single-phase 208-230v motor, and while some smaller home units will run on 110, the duty cycle and lift speed on 220 are what a working shop needs. The Urbandale shop had a 200-amp panel with room, so we coordinated with their electrician to drop a dedicated 30-amp circuit and a disconnect within sight of the power unit.

Install itself took a day and a half. Columns set and plumbed, anchors torqued to spec, overhead beam assembled and squared, cables routed and tensioned, hydraulic lines bled, then a full cycle test with a loaded vehicle. We ran the lift through its complete travel eight times before we handed over the keys, checking lock engagement at every position and watching for cable stretch. Then we trained all three techs on the safety locks, the emergency lowering procedure, and the daily walkaround. That last part gets skipped constantly by installers who are in a hurry to get to the next job, and it is the difference between a crew that catches a frayed cable early and one that finds out the hard way. We also left them a printed maintenance log on the wall next to the power unit.

First wheel bearing job on the new setup

Their first real test came about two weeks in: a tandem-axle enclosed trailer with a bearing that had run dry and scored the spindle. Under the old jack-and-stand method that job was a two-tech, half-day affair with a lot of kneeling on concrete. On the new lift, one tech raised the trailer to chest height, pulled both hubs on the affected side, and had the spindle inspected in under ninety minutes.

The shop owner told us later the real win was not speed, it was diagnosis quality. At chest height with good light and a clean floor, a tech can spin a hub, feel for roughness, and check seal condition without contorting. They started catching marginal bearings on adjacent axles that would have gone out the door before. That turned into upsell revenue and, more importantly, fewer comebacks. Over the first year they logged roughly 340 bearing services on that single bay. The other thing they noticed was ergonomics. Two of their techs had chronic back and knee complaints from years of floor work, and both reported meaningful improvement by summer. That is not something you can put on a spreadsheet next to the purchase price, but it shows up in retention and in how many hours a tech can actually bill in a week without burning out.

What the first year of maintenance on an auto lift looks like

Nothing dramatic happened, which is the point. The maintenance schedule on a two-post is short and most of it takes ten minutes. Daily: walk the unit, look at the cables where they enter the sheaves, listen for lock chatter, check that the arm restraints engage. Weekly: check the hydraulic fluid level in the power unit and wipe the columns. Monthly: grease the sheave pins and the carriage slide blocks, inspect the anchor bolts for any sign of movement, and cycle the lift empty to full height listening for anything new.

At six months we came back for the interim check and found exactly one issue: the equalization cables had stretched slightly, as new cables always do, and the locks were engaging a half-inch out of sync between the two columns. Ten minutes of adjustment fixed it. At twelve months we did the full ALI-recommended annual inspection, which includes a torque check on every anchor, a load test, and a detailed cable inspection. Everything passed. The hydraulic fluid was still clean and we topped it rather than changing it. Total first-year maintenance cost on this auto lift was well under a few hundred dollars in parts and our labor. Compare that to the cost of one cable failure on a neglected unit and the math is obvious. We keep cables, locks, and power unit parts in stock in Ames, so when something does wear out we are not waiting on a factory order.

What we would tell the next Urbandale shop

If your ceiling is over 12 feet clear and your tallest regular vehicle leaves a foot of headroom under the beam, take the overhead. The clean floor is worth real money in a shop that does chassis and bearing work. If you are under 12 feet, or if you regularly see high-roof vans and Class A coaches, look at baseplate or at a four-post with a rolling jack, and be honest with yourself about the floor channel you will be stepping over.

Second: core your concrete before you order. We would rather tell you no and lose a sale than install equipment on a slab that cannot hold it. Third: buy from someone who will be there in year five. Cables stretch, locks wear, power units eventually leak, and an auto lift with no parts support becomes an expensive wall decoration. We stock parts for Rotary, Challenger, BendPak, and Atlas, and we service brands we did not sell. Finally, do not let a low bid on install talk you out of proper training and documentation. If you want to talk through your own bay, whether you are in Urbandale, Ames, or anywhere in the state, call us at 800-674-9302. You can also read our comparison of two-post versus four-post lifts if you are still deciding on a style.