New Clarke FOCUS II Cylindrical 28 Midsize Floor Scrubber
Our Take (from the SES Sales Team)
“This is the Focus II Mid-Size to look at when your floors are not smooth. Grouted tile, quarry tile in a kitchen, textured or worn concrete: two counter-rotating cylindrical brushes spinning at 613 RPM get into low spots and grout lines that a flat disc rides over. It also wet sweeps, so small debris goes into a removable tray instead of clogging the squeegee, and you can often skip the pre-sweep.
Pick the battery first. The 242 Ah wet package is fine if someone on your team waters batteries; the sealed 312 Ah AGM package suits sites where nobody does. Add the chemical mixing package if you want detergent dosed from the control panel. One trade-off to know: at 71 dB A it is the loudest model in the family, so night or off-hours work may suit it best.”
A 28-inch cylindrical walk-behind scrubber for grout, tile and textured floors
The Clarke Focus II Mid-Size Cylindrical 28 is a battery-powered, traction-drive walk-behind automatic scrubber with two counter-rotating cylindrical brushes. Clarke built it for grouted tile and imperfect or rough textured floors, and it wet sweeps as it scrubs, collecting larger debris in a removable tray. Brushes change without tools. It suits restaurant kitchens, food processing, restrooms, locker rooms and other tiled or textured hard floors.
Choose your configuration
Compare the Focus II Cylindrical 28 packages
Every package shares the same 28-inch cylindrical deck, 23-gallon tanks, traction drive and onboard charger. They differ only in battery type and the Chemical Mixing System.
| 242 Ah wet | 312 Ah AGM | 242 Ah wet + chemical mixing | 312 Ah AGM + chemical mixing | |
|---|---|---|---|---|
| Batteries | Four 6 V, 242 Ah wet | Four 6 V, 312 Ah AGM | Four 6 V, 242 Ah wet | Four 6 V, 312 Ah AGM |
| Battery upkeep | Regular watering | Sealed, no watering | Regular watering | Sealed, no watering |
| Chemical Mixing System | No | No | Yes, onboard | Yes, onboard |
| Best for | Teams that water batteries | No battery watering | Wet batteries plus dosing | No watering, plus dosing |
| Packages here | 05421A | 05424A | 05425A | 05428A |
Reading the model numbers: Clarke numbers this family by package. 05421A has 242 Ah wet batteries, 05424A has 312 Ah maintenance-free (AGM) batteries, and 05425A and 05428A add the onboard Chemical Mixing System. The optional Chemical Mixing System meters detergent into the solution flow, with the ounces-per-gallon setting on a knob at the control panel.
Features:
- Counter-rotating cylindrical brushes scrub and wet sweep in one pass, with a removable debris tray
- Tool-free brush changes
- One-touch control panel and yellow palm buttons that start forward motion, the brush motors and solution flow
- Urethane front and rear squeegee blades with a tool-free adjustment knob
- Rear solution fill and a large recovery tank opening with an electronic float shutoff
Clarke Focus II Mid-Size Cylindrical 28
Specifications
| Models | 242 Ah wet | 312 Ah AGM | 242 Ah wet + chemical mixing | 312 Ah AGM + chemical mixing |
| Cleaning Path | 28 in (71 cm) | |||
| Pad / Brush Size | Two 5.75 x 28 in (14.6 x 71 cm) cylindrical brushes | |||
| Brush Motor | Two 0.81 hp (0.6 kW), 613 RPM | |||
| Brush Pressure | 80 lb (36 kg) | |||
| Squeegee Width | 35 in (89 cm) | |||
| Solution / Recovery Tank | 23 gal (87 L) / 23 gal (87 L); rear fill with bucket or hose | |||
| Solution Flow | 0–1 gal/min (0–3.8 L/min) | |||
| Vacuum Motor | 0.75 hp (550 W), 3-stage tangential discharge | |||
| Speed (Forward / Reverse) | 0–260 ft/min (0–4.8 km/h) / 0–174 ft/min (0–3.2 km/h) | |||
| Batteries | 24 V, four 6 V 242 Ah wet | 24 V, four 6 V 312 Ah AGM | 24 V, four 6 V 242 Ah wet | 24 V, four 6 V 312 Ah AGM |
| Charger | Onboard, 24 V, 25 amp | |||
| Chemical Mixing System | No | No | Yes | Yes |
| Sound Level | 71 dB A | |||
| Cleaning Grade | 6° incline | |||
| Wheels | Two 10.24 in (26 cm) non-marking foam-filled; two 3.94 in (10 cm) casters | |||
| Squeegee Blades | Urethane front and rear | |||
| Dimensions (L x W x H) | 59.5 x 31 x 44 in | |||
| Agency Approval | UL 583 | |||
| Model Numbers | 05421A | 05424A | 05425A | 05428A |
Technical specs may include optional equipment that is not included with all units.

