| Models | Liberty SC50 X20D |
| Cleaning Path | 20 in (51 cm) |
| Scrub Deck | Disc |
| Brush Speed | 157 rpm |
| Solution Tank | 15 gal (57 L) |
| Recovery Tank | 14 gal (53 L) |
| System Voltage | 24 V |
| Battery Capacity (max) | 255 Ah |
| Max Speed, Autonomous | 2.35 mph (1.055 m/s) |
| Max Transport Speed, Manual | 3.1 mph forward, 1.62 mph reverse (5.0 / 2.6 km/h) |
| Productivity, Autonomous (theoretical) | 20,400 ft²/hr (1,895 m²/hr) |
| Sound Level | 63 dB(A) |
| Gradeability | 15% transport, 9% cleaning, 2% autonomous |
| Squeegee Width | 30.2 in (76.7 cm) |
| Minimum Aisle Turn (manual) | 62.7 in (159.2 cm) |
| Dimensions (L x W x H) | 53.3 x 30.0 x 56.8 in (135.5 x 76.1 x 144.1 cm) |
| Gross Weight | 1,057.1 lb (479.5 kg) with full solution tank, batteries and 165 lb operator |
| Protection Grade | IPX4 |
| Safety Certification | CSA/ANSI C22.2 No. 336-17 |
| Touchscreen | 15 in |
| Model Numbers | 56104506 |
Technical specs may include optional equipment that is not included with all units.
New Nilfisk Liberty SC50 X20D 20" Disc Stand-On Autonomous Floor Scrubber
Our Take (from the SES Sales Team)
“The Liberty SC50 is a 20-inch stand-on scrubber that can run itself. You drive a route once in CopyCat mode, or drive the perimeter in Fill-in mode and let the machine work out the interior, and it repeats the job while your team handles work that needs a person. It suits schools, hospitals, airports, retail and office buildings with large floors that get scrubbed on a schedule.
What stands out is the safety and reporting side. Nilfisk lists third-party robotic safety certification to CSA/ANSI C22.2 No. 336-17, an independent safety system with 360-degree sensors and drop-off detection, and cleaning reports that show where, when and by whom a job was done. A 15-inch touchscreen walks operators through setup, and Manual mode lets it work like a regular stand-on scrubber for spot jobs.
The trade-off is that autonomy pays off on repeatable routes. In autonomous mode it is limited to 2% grades and 2.35 mph, so cluttered or constantly changing areas may go faster with an operator. If that describes most of your floor, a conventional stand-on such as the Advance SC1500 is the simpler fit.”
A 20-inch disc stand-on scrubber that learns a route and cleans it on its own.
The Nilfisk Liberty SC50 X20D is an autonomous stand-on scrubber dryer with a 20-inch (51 cm) disc deck, a 15-gallon solution tank and a 14-gallon recovery tank, running on a 24 V system with 255 Ah battery capacity. Three modes cover the work: CopyCat replicates a route the operator drives once, Fill-in calculates the interior route from a driven perimeter, and Manual mode gives full control.
An array of 3D, 2D, infrared and depth sensors handles mapping (SLAM, with no pre-mapping) and obstacle detection, and an independent safety system can stop the machine. Nilfisk lists third-party certification to CSA/ANSI C22.2 No. 336-17. Autonomous productivity is rated at 20,400 sq ft per hour, Fill-in mode targets 99% coverage, and job reports show where, when and by whom cleaning was done.
Includes:
- 255 Ah AGM battery pack
- On-board charger
- Pad holder
Features:
- CopyCat, Fill-in and Manual cleaning modes
- Third-party robotic safety certification (CSA/ANSI C22.2 No. 336-17)
- Independent safety system with 360-degree sensor coverage
- 15-inch touchscreen with step-by-step guidance
- Cleaning job reports and real-time operator updates