Key takeaways
- A listed turn width and a listed turning radius are different measurements, so compare like with like.
- Compact does not guarantee a tight turn: a 20-inch Uline compact scrubber lists a 67-inch turning radius, larger than a 17-inch walk-behind's 60 inches.
- Walk-behind cleaning paths across listings run about 13 to 36 inches, and Tennant's 5700 offers 28, 32 and 36 inch paths.
- No verified staff-time figure surfaced for either tool, so time both on your own aisle before you estimate savings.
- A robot's closing checklist centers on routes, charging and displays; a walk-behind's centers on the operator and the run.
Which tool fits a narrow showroom aisle?
In many narrow showroom aisles, a compact autonomous floor robot is the stronger choice when the room must be cleaned after close with no one riding or pushing the machine. A walk-behind scrubber fits better when the aisle is wide enough for its path, the layout changes often, or a crew needs to watch every pass.
Four measurements decide the question: turning width at the aisle ends, cleaning width per pass, the staff time each tool draws, and what must happen at closing. Public listings give usable figures for the first two. They give no verified figure for the last two, so those need timing on your own floor.
How do turning radius figures compare?
Turning radius decides whether a machine can clear an aisle end, but the listings do not measure it the same way. Uline lists a 38-inch turning radius for its 14-inch compact auto scrubber and 67 inches for its 20-inch model. Global Industrial lists 60 inches for a 17-inch walk-behind auto scrubber with a 45-inch length.
Kärcher's KIRA B 100 R is listed differently: a 71-inch aisle turn-around width and a 33.8-inch minimum autonomous aisle width, with a 26-inch brush working width. These are vendor-reported figures, checked as of November 2026, and nothing was tested independently.
Two cautions follow. A compact label does not promise a tight turn, since the 20-inch Uline unit's listed radius exceeds the 17-inch walk-behind's. Other Global Industrial listings express turning in degrees, roughly 60 to 61 for some units, which appear to be steering angles rather than radii, so they do not belong in a radius comparison.
What cleaning width does each path give you?
Cleaning width sets how many passes an aisle needs. A wider path covers more floor per pass, but only if the aisle can hold the machine with clearance to spare on both sides.
- Kärcher KIRA B 100 R: 26-inch brush working width, vendor listing checked as of November 2026
- Nobles Speed Scrub 15: 15-inch path, marketed for small, cramped areas
- Global Industrial 17-inch auto walk-behind: 17-inch cleaning path
- Tennant 5700 EC H2O NanoClean: 28-inch, 32-inch or 36-inch cleaning paths in its specification sheet
- Walk-behind path widths across the listings reviewed: about 13 to 36 inches

How much staff time does each tool take?
Our research did not turn up a verified staff-time figure for either tool in a showroom, so any hour count you see is unsupported until you measure it. What differs is where a person's attention goes.
A walk-behind scrubber needs an operator for the full pass, plus setup and the upkeep of its cleaning solution and recovery tank. An autonomous robot needs a person to confirm routes, check the machine before the run, and clear the aisle, then review the results afterward. Those are different tasks, and each should be costed at local wages rather than a rule of thumb.
Time the current manual pass on the aisle, then time a robot's setup and pre-run check on the same aisle. A few nights of timing will tell you more than any catalog page.
What does each tool need at closing?

Closing needs decide whether the room is ready at open. A compact robot needs a clear route, no loose stock or cords across the path, and a charging spot it can reach. A walk-behind needs the same clear aisle, plus someone to stage the machine and close out the run.
The Tennant T380AMR is marketed as a compact robotic floor cleaner. We found no turning radius or cleaning width for it in the search results, so compare it on its own specification sheet before it reaches a shortlist.
Showrooms that rotate displays should plan the robot route around the fixtures that move most often. A route built for last month's floor plan will fail on the first changed aisle, and the fix is a map update, not a new machine.
How should a manager choose for one room?
Start with the aisle, not the machine. Measure the clear width between fixtures, the turn-around space at each end, and how often the layout changes. Then check each candidate's listed path and turn figures against those numbers, using the same definition for both.
- Measure the narrowest clear aisle and subtract the machine's listed width.
- Confirm the turn-around space at each aisle end against a turn figure of the same type.
- Time one manual pass and one robot setup and check on the same aisle.
- List what must be cleared, plugged in and emptied before the run, and name the person who owns each step.

How does Service Robot Co. fit into this decision?
Service Robot Co. is an OEM-neutral integrator, so we compare robot models across manufacturers against the measurements of your room rather than starting from one catalog. We then deploy, train and service the unit through our nationwide engineer network.
Customers get a robot through a lease. After a site assessment, we quote one fixed payment on a three-year lease with financing options, so the cost is known before the machine enters the aisle.
Frequently asked questions
Want a robot working for you?
Tell us the job and the site. We will recommend the robot, quote the lease, and keep it serviced.
Sources
- Kärcher KIRA B 100 R listing
- Uline 14-inch compact auto floor scrubber listing
- Uline 20-inch compact auto scrubber listing
- Global Industrial 17-inch auto walk-behind floor scrubber listing
- Global Industrial electric auto floor scrubber listing (degree figures)
- Tennant 5700 EC H2O NanoClean specifications
- Nobles Speed Scrub 15 walk-behind scrubber listing
- Tennant T380AMR model listing (Equipment World)




