Clarke® CA60 Walk-Behind Auto Scrubber, 20 or 24 Inch Disc or BOOST® Orbital

Which Clarke CA60 Fits Your Floor?

Whichever model you choose, you get the same tanks, battery compartment, vacuum and squeegee. The deck and the drive set them apart, and together they move the price by up to $3,898.

CA60 20D: disc with pad assist, the value pick

One 20-inch round pad or 21-inch brush turns at 150 RPM with 60 lb of down pressure. There's no drive motor. The spinning pad helps pull the machine along while the operator steers and sets the pace. If your floors are flat and sealed, as in most schools, offices and clinics, that may be all your crew needs, and at $6,559 it's the least expensive way into a 16-gallon Clarke.

CA60 20TD: the same disc, with traction drive

The 20TD adds a 0.2 hp drive motor with forward and reverse. Yellow palm switches on the handle move the machine, a knob sets the speed up to 2.5 mph, and a button puts it in reverse. It costs $1,064 more than the 20D, and it earns that on long corridors, big rooms and shifts where one person scrubs for more than an hour, because the machine does the pushing instead of your operator. One detail worth knowing: Clarke lists the 20TD at 51 lb of pad pressure, a little less than the 20D's 60 lb.

CA60 20B and 24B: BOOST orbital scrubbing

Instead of spinning, a rectangular 14 x 20 or 14 x 24 inch pad moves in tight orbits at 2,250 RPM, scrubbing from every direction at once. The 1 hp deck presses down with 88 lb, or 110 lb when the operator taps the extra pressure button, and the BOOST deck leveling system keeps that pressure even from the front of the pad to the back. The square pad also reaches into your corners and along baseboards that a round pad can't.

This is the orbital floor scrubber in the range. Nilfisk says the BOOST versions use less water and chemical than the disc models and can remove floor finish with plain water, so stripping day doesn't have to mean buckets of stripper and your building smelling of it the next morning. Both BOOST models have traction drive. The 24B covers 20% more floor per pass for $1,455 more than the 20B, and its body is 25.6 inches wide instead of 21.7.

The limits are real. A flat orbital pad rides over low spots and deep grout lines, so on uneven or textured floors the disc is often the better fit. BOOST runs its own rectangular pads, not the round pads you may already stock. And if you never strip floors and a disc already gets them clean, the 20D or 20TD saves you $1,379 to $2,443.

Battery: 130 Ah Wet or 140 Ah AGM

Every CA60 runs on two 12-volt batteries (24 volts) charged by the onboard 13-amp charger. The wet pack costs less, but its cells need checking and topping up with distilled water. The AGM pack is sealed and maintenance-free, holds a little more (140 Ah against 130 Ah) and adds $226 to $570, depending on the model. Clarke doesn't publish a runtime figure. If nobody on your crew will water batteries every week, pay for AGM. Our guide to floor scrubber batteries compares the types in more depth.

Not sure which CA60 fits? Send us your square footage, floor type and cleaning schedule, or call (855) 601-5678, and we'll tell you, including when the answer is a different machine. You can also compare every model in our walk-behind floor scrubbers collection.

The Owner's Insights on the Clarke CA60

For most buyers I'd narrow the CA60 down to two. If you scrub sealed floors every night and never strip, look at the 20TD. Pushing a machine that weighs about 460 lb loaded gets old by the second hallway, and traction drive is $1,064 well spent.

If you strip floors in-house, the BOOST 20B is the one I'd look at hardest. At $9,002 with batteries, compare it side by side with the Tornado OB 20/14, another 14 x 20 inch orbital, at $10,000 with lead acid batteries ($9,099 without). We sell both, and I'm happy to talk you through the differences.

Two honest notes. Clarke rates the CA60 for a 2% slope at most, so it's a flat-floor machine; plan another route for ramps. The 30-inch squeegee is the widest part, and it comes off with two thumb nuts for tight doorways. For restrooms and small rooms, the Clarke CA30 20B scrubs the same 20-inch path for $5,937. For big open floors, the Clarke Focus II goes up to 34 inches with 23-gallon tanks.

What Customers Say About the Clarke CA60

Public owner reviews of the CA60 are scarce. None of the retailers we checked has a written review, so what follows comes from custodians discussing the machine on Reddit, and it's mixed. School and facility crews run it for nightly scrubbing, and one owner summed it up as a machine that works and gets the job done, while another has had repeated trouble with two units. The complaints center on charging. One school district reported onboard chargers that kept charging after the batteries were full, and a 20TD owner saw runtime drop from about two hours to 15 minutes. Experienced custodians traced that kind of failure to short top-up charges and dry wet-cell batteries, so let every charge cycle finish. On a streaky kitchen floor, the fix they suggested was a kitchen degreaser and a 14 x 20 inch brush for porous epoxy, not a different machine.

Why You'll Love the Clarke CA60

• Four machines on one chassis. Disc or BOOST orbital, pad assist or traction, so you pay only for the deck and drive your floor needs.

• 16-gallon solution and recovery tanks. At the lowest of four flow settings, a full tank lasts close to 90 minutes of scrubbing before you refill.

• BOOST down pressure up to 110 lb. One button adds pressure when your floor has heavy soil, and the leveling system keeps it even across the whole pad.

• One-touch scrubbing. One button starts scrubbing and the vacuum, and on disc models the pad driver locks on and releases at the push of a button.

• Open recovery tank with a debris catch cage. Grit stays in the cage, and a float shuts off suction when the tank is full to protect the vacuum motor.

• 69 dB(A) at work. Not far above normal conversation at around 60 dB, so it can run while a store or clinic is still open.

• Onboard charger. Plug the supplied cord into the wall at the end of your shift, and a gauge on the panel shows the charge.

What's in the Box, Pads, Brushes and Running Costs

Each CA60 ships with its two batteries, the onboard charger and AC cord, a quick start guide and two spare fuses, and retailers list the pad driver as included. Floor pads aren't on the list, so order yours with the machine. The 20D and 20TD take a 20-inch round pad, or the 21-inch disc scrub brush (Clarke part VF91040, $195.95) for grout and textured floors. If their pad driver is ever lost or damaged, the replacement pad holder (VS13777) is $195.76. The BOOST models run rectangular pads: Clarke BOOST pads come in 14 x 20 inches for the 20B and 14 x 24 inches for the 24B, in cases of five from $33.12. Clarke also offers an optional Chemical Mixing System kit that meters detergent from its own bottle. None of these eight versions includes it, so ask us if you want it.

Your daily care routine takes a few minutes: drain and rinse both tanks, rinse the float cage, foam filter and debris cage, wipe the squeegee and flip or replace the blades when the edge wears. A front and rear squeegee blade kit fits all four models, at $50.36 in non-marking rubber (VF91113) or $94.38 in urethane (VF91116). Clean the solution filter weekly. Clarke asks for a check of the lower isolators every six months, and a yearly carbon brush check on the brush, vacuum and drive motors by an authorized service center. Nilfisk treats pads, brushes, squeegee blades and BOOST isolators as wear items, not covered except for manufacturing defects.

Why You Should Consider a Clarke Floor Scrubber

Clarke is one of Nilfisk's commercial floor care brands, so parts and service run through Nilfisk's own network of authorized service centers. Nilfisk covers battery walk-behind scrubbers for 3 years parts, 3 years labor and 1 year travel, and covers wet and AGM batteries for 12 months against manufacturer defects. We're an authorized Clarke retailer, so that warranty is yours from day one. See all our Clarke floor scrubbers.

Clarke CA60 Specifications by Model

*Machine width without the squeegee; the squeegee is 30 in on every model. **Without batteries or water. ***Gross vehicle weight with batteries and full tanks. All figures from Clarke's operator manual VS13039 Rev. B.