New Clarke FOCUS II 28 BOOST Rider Scrubber
Our Take (from the SES Sales Team)
“The Focus II Rider 28 BOOST is the rider to look at if your floor program includes stripping and recoating. Clarke says the BOOST head can take off floor finish without chemicals, so a crew can strip without mixing and spreading stripper across the floor. On regular nights it works as a 28-inch rider with 31-gallon tanks and low solution flow settings, so one tank goes a long way across schools, healthcare hallways and other big hard-floor areas.
The package choice is about batteries and chemical. The 310 Ah wet set with the onboard charger covers standard shifts. The 420 Ah wet set gives longer runs and charges from an off-board shelf charger, so plan for a charging spot. The 312 Ah AGM set is sealed for crews that would rather not water batteries. Add the Chemical Mixing System if you want the machine to meter detergent for you.”
A 28-inch BOOST rider scrubber for daily scrubbing and chemical-free finish removal
The Clarke Focus II Rider 28 BOOST is a battery-powered ride-on floor scrubber with a 28 in (71 cm) BOOST® scrub deck and 31 gal (117 L) solution and recovery tanks. Instead of a spinning disc, the BOOST head runs at 2,250 rpm, and Clarke says it can remove floor finish without chemicals, which saves time and material cost and cuts the risk of slip-and-falls and chemical spills that come with conventional stripping. The same deck handles routine scrubbing of large hard floors, with three scrub pressure settings, low solution flow rates and Universal One-Touch™ controls. It cleans at up to 3.12 mph for a maximum coverage of 38,438 sq ft per hour and turns in a 63 in (160 cm) radius.
Choose your configuration
Pick the Focus II 28 BOOST battery package
| 310 Ah wet | 420 Ah wet | 312 Ah AGM | |
|---|---|---|---|
| Batteries | 24 V, 310 Ah wet | 24 V, 420 Ah wet | 24 V, 312 Ah AGM |
| Charger | Onboard | Off-board shelf charger | Onboard |
| Battery care | Regular watering | Regular watering | Sealed, no watering |
| Best for | Standard daily shifts | Longer runs between charges | Crews that would rather not water batteries |
| Packages here | 56114020; 56114022 (with Chemical Mixing System) | 56114023; 56114024 (with Chemical Mixing System) | 56114025; 56114026 (with Chemical Mixing System) |
Reading the model numbers: Nilfisk names these packages FOCUS II R 28B followed by the battery and charger code. W is wet batteries, A is AGM, the number is the amp-hour rating, OBC is an onboard charger and SC is an off-board shelf charger. CH marks the packages with the optional Chemical Mixing System, and PH means the machine ships with a pad holder. The scrubbing specs are the same across every package.
Features:
- BOOST® head at 2,250 rpm for deep scrubbing and chemical-free floor finish removal
- Three scrub pressure settings: 90, 120 and 150 lb (39, 54 and 68 kg)
- Three low solution flow rates: 0.20, 0.40 and 0.60 gpm
- Heavy-duty, fully adjustable steel side skirts maximize water pickup and protect the machine
- Optional Chemical Mixing System uses every drop of chemical exactly as directed

Clarke Focus II Rider 28 BOOST

Scrubbing a gym floor

BOOST deck pad change
Focus II Rider 28 BOOST
Specifications
| Models | 310 Ah wet | 420 Ah wet | 312 Ah AGM |
| Cleaning Path | 28 in (71 cm), BOOST | ||
| Squeegee Width | 32.6 in (83 cm) | ||
| Solution / Recovery Tank | 31 gal (117 L) / 31 gal (117 L) | ||
| Scrub Pressure | 90 / 120 / 150 lb (39 / 54 / 68 kg) | ||
| Brush Motor / Speed | 0.75 hp (559 W), 2,250 rpm | ||
| Solution Flow | 0.20 / 0.40 / 0.60 gpm (0.76 / 1.51 / 2.27 L/min) | ||
| Vacuum Motor | 0.75 hp (560 W) | ||
| Sealed Water Lift | 46.1 in (11.48 kPa) | ||
| Airflow | 76.5 cfm (36 L/s) | ||
| Drive Motor | 1.05 hp (780 W) | ||
| Speed | 3.12 mph (4.8 km/h) cleaning; 3.91 mph (6.3 km/h) transport | ||
| Max Coverage | 38,438 sq ft/hr (3,571 m²/hr) at 3.12 mph | ||
| Gradeability | 4.5% cleaning; 7.1% transport | ||
| Minimum Turn Radius | 63 in (160 cm) | ||
| Batteries | 24 V, 310 Ah wet | 24 V, 420 Ah wet (6 V batteries) | 24 V, 312 Ah AGM |
| Charger | Onboard | Off-board shelf charger | Onboard |
| Sound Level | 68.6 dBA (IEC 60704-1) | ||
| Weight | 590 lb (268 kg) without batteries; 1,371 lb (622 kg) GVW with 310 Ah batteries, full tank and 175 lb operator | ||
| Dimensions (L x W x H) | 60 x 30 x 55 in (152 x 76 x 140 cm); 31.5 in (80 cm) max width without squeegee | ||
| Approvals | CSA, ETL (US and Canada) | ||
| Model Numbers | 56114020, 56114022 | 56114023, 56114024 | 56114025, 56114026 |
Technical specs may include optional equipment that is not included with all units.

