Swarf and Chips: Choosing a Robot Sweeper for Sheet Metal Floors

Which sweeper copes with metal swarf?

A dry sweeper or a combined sweep and suction machine is the usual fit for swarf and chips. A wet scrubber earns its place later, for grime and spills, once the loose metal is gone. Shavings are sharp and often soaked in coolant, so the features that matter are a pickup that handles heavy chips, a brush that tolerates abrasion, and a collection path that does not choke on long curls.

One metalworking product is marketed for exactly this job. As of November 2026, Kemaro's metalworking page says its K900 combines sweeping and suction for shavings, grinding dust, coolant residue and swarf. That is vendor marketing, not independent testing, so ask for a trial on your own chips before you rely on it.

A floor equipment guide sorts the choice the same way: a wet scrubber for grime and spills, a dry sweeper for metal shavings and loose debris, and a combined machine for mixed conditions. The guide is vendor adjacent and carries no date, so treat it as a starting map rather than a verdict.

Why should a shop sweep before it scrubs?

Scrubbing a chip floor too early can make things worse. In one metalworking case study, scrubbing without sweeping first turned dust into mud. The study's authors recommended daily sweeping, with the scrubber used periodically for deep cleaning, and the piece is published by the vendor with no date shown.

The logic holds even when you discount the vendor angle. Chips caught in a wet film do not lift cleanly, and they spread into corners and along equipment edges, where a robot's path seldom reaches. Sweep the bulk off first, then scrub the film that remains.

How do chips create hazards on the floor?

Chips create hazards in two ways. A machining safety text notes that coolant and the volume of chips from cutting create slip hazards, and that chips are a secondary trip hazard. WorkSafe Victoria, an Australian state regulator, recommends marked pathways kept clear, chip guards and enclosures to contain chips, regular removal of metal chips, and spills cleaned at once.

I found no published rate for tire damage, cord damage or foot injuries in sheet metal shops. Treat those as risks to check on your own floor, not as figures to quote to a board. In the US, secondary sources point to the walking working surfaces standard, 29 CFR 1910.22, and to 1910.176(b), which says material storage must not create a hazard. I did not confirm the latest wording on osha.gov, so check it with your safety officer before writing policy.

What brush and filter setup suits metal debris?

Metal shavings are abrasive. A workshop guide warns they can tear a vacuum filter and clog its hose, and it recommends a magnetic sweeper for bulk metal, saving vacuums for fine nonmetallic dust. For a robot, that split means a machine that pulls heavy chips straight into a fine filter is asking for filter trouble.

Brush design is worth asking about. One roller brush patent describes building the brush from axial sections clamped with wedges, so a single damaged section can be swapped without replacing the whole brush. A patent shows an idea, not a shipping product, so ask each vendor whether its catalog includes a design like this and how it performs on your chips.

How do you set run times around cutting and bending cells?

I found no verified run time figure for sheet metal shops, so build the schedule from your own cell timing rather than a number in a brochure. Log when each cutting, punching, shearing and bending cell throws the most chips, and when operators walk the main aisles. The quiet windows usually show up in that log.

Run passes in the gaps. Good windows often fall after the heaviest cut cycle, before the bend shift begins, and once more at shift end. Keep marked pathways clear while the robot works, and never schedule a pass beside a live cell where an operator must step into the route.

This is the mapping we do first. Service Robot Co. is an OEM neutral integrator, so we pick the sweeper for your debris rather than one brand's catalog, then map your cells during a site assessment. We lease the robot on a 3 year lease, quote one fixed lease after that assessment, deploy and train your crew, and service every unit under RoboCare, our service program.

What maintenance keeps brushes and filters working?

Check brushes on a fixed schedule, not only when a sweep looks poor. A Cleanfix HS770 manual, as I checked it in November 2026, tells operators to check the roller brush for wear from time to time, and says the brush can be changed by removing three screws on each half.

Make the routine simple. Clear wrapped wire and curls after each run, empty the collection bin before wet swarf builds up, and inspect the filter after any heavy chip run. I found no published brush life figures for robots that pick up metal chips, so set your interval from the wear you see and keep the log.

What should you ask a vendor before you commit?

Ask for a trial on your own chips, on your own floor, not on a showroom tile. A vendor that cannot run your coolant and grinding dust through a demonstration has not shown you much.

Start with these five questions.

• How does the machine separate heavy chips from fine grinding dust, and in what order?
• Can a single damaged brush section be replaced without replacing the full brush?
• How is the filter protected from long curls and abrasive shavings?
• Can run logs be exported to your own records?
• Who dispatches a technician when a unit stops in the middle of a shift?

Why these answers matter on the floor

Those answers separate a machine built for swarf from one that merely lists it on a spec sheet. The sooner you ask, the sooner your crew stops sweeping by hand around the cutting tables.