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Robot profile · Nilfisk

Nilfisk Liberty SC50 · specifications, operator review and alternatives (2026)

The Nilfisk Liberty SC50 is a compact stand-on autonomous floor scrubber launched in 2018 for supermarkets, airports, schools, healthcare facilities and warehouses. It scrubs a 510 mm width, carries 57 L of water and integrates Ecoflex dosing (water and detergent on demand). It stands out for a UVGI variant with ultraviolet disinfection, useful in healthcare. A proven but ageing platform (Carnegie Robotics navigation), with no dock. Price and availability on request.

Nilfisk Liberty SC50, overview of the Nilfisk cleaning robot

At a glance

TypeCompact autonomous floor scrubber (stand-on)
Manufacturer / yearNilfisk · 2018
Cleaning width510 mm
Tanks57 L clean water · 53 L recovery water
Machine width / U-turn761 mm / 1,593 mm
Weight363 kg
Noise level63 dBA (IEC 60335-2-72)
Water savingEcoflex (on-demand dosing)
VariantUVGI (ultraviolet disinfection)
Commercial modelPurchase, rental or RaaS · price on request
Verified on16/07/2026 · CSV v39

Data sheet

FunctionFloor scrubber (hard-floor scrubbing) · stand-on converted to autonomous
Cleaning width510 mm
Brush510 mm disc, 157 rpm (or REV orbital)
Tanks57 L clean · 53 L recovery
Water savingEcoflex (water and detergent dosed separately)
Machine width / U-turn761 mm / 1,593 mm
Weight363 kg
Noise level63 dBA (IEC 60335-2-72)
NavigationLiDAR · Carnegie Robotics stereo cameras
StationNo (on-board charger)
Carpet compatibleNo
Floor typesConcrete, ceramic tiles, vinyl and PVC, stone, resin
VariantUVGI (ultraviolet disinfection)
DistributionAsk us about availability
Commercial status 2026On sale

Reading by environment

Floor area tier57 L of water and a compact format: medium floor areas. Nilfisk publishes an area per charge rather than an hourly productivity figure.
Footprint / aislesA 761 mm wide machine with a 1,593 mm U-turn: compact for a scrubber, but the U-turn still has to be allowed for in retail aisles.
Floors and soilingDisc scrubber (or REV orbital) for hard floors, with Ecoflex dosing. No carpet. Coarse debris must be swept up first.
Public / hours63 dBA, measured to IEC 60335-2-72: daytime use is conceivable. The UVGI variant adds ultraviolet disinfection, relevant in healthcare and sensitive facilities.
PlumbingNo dock: manual filling and draining, mitigated by Ecoflex dosing.
MaturityA 2018 platform (Carnegie Robotics), proven but ageing against recent purpose-built robots. Listed by major FM contractors.

Floors and soiling

A compact disc scrubber for hard floors: stuck-on and wet soiling on concrete, tiles, PVC, stone and resin. No carpet. Coarse debris must be swept up first. The UVGI variant adds UV disinfection without replacing scrubbing: it is a hygiene supplement, not a cleaning mode.

What the manufacturer does not say

The UVGI variant is the real differentiator. Ultraviolet disinfection, alongside scrubbing, sets the SC50 apart in healthcare and sensitive facilities. It is an asset the standard data sheet does not always highlight.

The platform dates from 2018. Carnegie Robotics navigation is proven, but ageing: weigh it against the ROVR and other recent purpose-built robots before buying new.

Beware of the "passage" figure. The 1,593 mm is a U-turn in an aisle, not a minimum passage width: the machine is 761 mm wide. Cost structure: machine plus consumables plus manual water handling.

Purchase or outsourced service

On purchase (capex), the UVGI variant opens up ultraviolet disinfection in healthcare, but the platform dates from 2018 and deserves to be weighed against recent purpose-built robots before buying new. Under an outsourced service (opex), the contractor carries that generation choice and the continuity risk. See the catalogue and the demonstration, or our robotic cleaning offer.

Strengths and limitations

Strengths

  • UVGI variant with ultraviolet disinfection, an asset in healthcare.
  • Ecoflex dosing, proven platform, references with major FM contractors.
  • 63 dBA, daytime use is conceivable.

Limitations

  • A 2018 platform, with no dock.
  • Runtime not published in plain terms, 1,593 mm U-turn.
  • Scrubbing only, no carpet.

Alternatives

  • Within the Nilfisk range: the Liberty SC60 (industrial, larger) in the size above.
  • Against other compact scrubbers: the Tennant X4 ROVR (recent, purpose-built) and the Kärcher KIRA B 50.

Comparison with a Pudu BG1: see the dedicated comparison. To put figures on it: How much does it cost?, Rental or purchase? or demonstration.

Sources

Consulted on 16/07/2026: Nilfisk product page for the Liberty SC50; internal robot database (v39). "N/p" values not published. No price displayed: on request.

Frequently asked questions

What is the UVGI variant?
A version of the SC50 that adds ultraviolet disinfection alongside scrubbing, useful in healthcare.
How wide is the machine?
761 mm wide, with a 1,593 mm U-turn (not to be confused with a minimum passage width).
Does it scrub carpet?
No, hard floors only.
How much does it cost?
Price on request. Tell us about your site and we will come back with availability and a quotation.
Full-service contract No capital outlay All inclusive, per month Per robot. Equipment, maintenance, parts, consumables and replacement within 72 hours. See the offer → Purchase with maintenance contract The robot on your balance sheet Purchase + maintenance The robot becomes your asset; the contract covers servicing and parts. See the offer →

Compare the two options, criterion by criterion →

Interested in the Nilfisk Liberty SC50, or in an alternative?

Ask us: we will tell you plainly whether this model suits your floors, and what we would do in your place. Reply within one working day.

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