LionsBot R12 Rex Scrub Review 2026: Specs, Price & Verdict

LionsBot R12 Rex Scrub: Quick Buyer Verdict

The R12 Rex Scrub should be evaluated as an autonomous replacement or companion for large ride-on floor-scrubbing routes—not simply as a bigger version of a compact cleaning robot. Its strongest business case appears where a facility repeatedly spends several labour-hours covering large open floor areas and can hand those routes to the robot without creating excessive intervention around doors, clutter, narrow passages or changing layouts.

Pros

• Very large 140 L clean-water and 140 L recovery tanks.
• 810 mm cleaning width for high-volume floor coverage.
• Up to 80 kg of downward brush pressure for more demanding scrubbing.
• Current published practical productivity of 1,500–2,500 m²/hr.
• Long autonomous cleaning cycles compared with many smaller robotic scrubbers.
• Manual, touchscreen and autonomous operating options.
• Long-range 3D LiDAR designed for localisation in large facilities.
• Optional Refuel Station can automate part of the charging and water-management process.
• Fleet management and scheduling through LionsBot’s software ecosystem.
• Manufacturer-published commercial deployment evidence in large public facilities.

Cons

• Large physical footprint makes it inappropriate for many narrow or highly cluttered facilities.
• Current listed charging time of 8–10 hours is long relative to several newer autonomous scrubbers.
• Public LionsBot documents do not agree on every major specification.
• No universal public 2026 price, making TCO comparison dependent on quotations.
• The standard R12 Rex Scrub uses disc scrubbing and does not provide the debris-pickup capability of the related Rex CS cylindrical-brush version.
• A successful autonomous deployment still depends on route design, pedestrian traffic, floor transitions, doors, network coverage and water/charging infrastructure.
• Public product information does not provide enough detail to assume suitability for outdoor, washdown or other harsh environments without written confirmation.

Our recommendation: shortlist the R12 Rex Scrub when your facility has genuinely large, repeatable hard-floor routes and the current cleaning operation already consumes significant ride-on scrubber labour. Do not choose it merely because it has large specifications. Measure the route, run the exact robot through a representative shift and prove intervention rate, practical coverage, water consumption and floor-drying quality before committing. Review the LionsBot R12 Rex Scrub listing at Anton Robots before requesting a site-specific configuration.

How Much Does the LionsBot R12 Rex Scrub Cost in 2026?

LionsBot does not publish a universal current list price for the R12 Rex Scrub on its main product page. Buyers are directed toward a consultation or demonstration, which means the meaningful purchasing figure is the complete site-specific deployment quote rather than an isolated robot price.

The final cost can depend on region, distributor, support package, battery configuration, software, commissioning, training and whether the optional Refuel Station is included.

The number that matters more than purchase price

For a machine of this scale, ask the supplier to calculate:

Cost per productive autonomous cleaning hour = total annual robot cost ÷ productive autonomous cleaning hours delivered.

Then compare it with the fully loaded cost of the process it replaces or supplements.

A cheaper robot that needs frequent rescue, refilling or manual repositioning can cost more operationally than a higher-priced system that completes reliable long routes. Conversely, a powerful R12 is poor value if most of your building is too constrained to use its size and capacity.

For current pricing and regional availability, see the R12 Rex Scrub product page.

What Is the LionsBot R12 Rex Scrub?

The R12 Rex Scrub is a large autonomous commercial floor scrubber developed by Singapore-based LionsBot. It combines two disc brushes, a rear squeegee, large clean- and waste-water tanks, autonomous navigation and software-based fleet management in a machine intended for large-scale floor cleaning.

It can operate autonomously, but LionsBot also provides manual and touchscreen control. That matters operationally: staff can reposition the robot or use it manually rather than treating autonomy as the only mode available.

What the R12 Rex Scrub is

• A heavy-duty autonomous floor-scrubbing machine.
• A large-area cleaner for commercial and industrial hard floors.
• A dual-disc scrubber with substantial brush pressure.
• A platform for scheduled repeatable floor-cleaning routes.
• A machine that can form part of a centrally monitored LionsBot fleet.
• A potential substitute for portions of repetitive ride-on scrubber work.

What it is not

• It is not a compact robot intended to weave through narrow restaurant or retail layouts.
• It is not primarily a vacuum robot.
• It is not the same machine as the R12 Rex CS, which uses cylindrical brushes and adds debris-handling capability.
• It should not be assumed to collect every piece of loose debris before scrubbing.
• It is not automatically suitable for every outdoor or wet environment merely because it is industrial-sized.
• It does not remove the need for edge work, detailed cleaning, spill response or robot supervision.
• It does not guarantee ROI unless enough suitable floor area is transferred from manual labour to autonomous cleaning.

If you are comparing the wider category rather than one model, browse commercial cleaning robots at Anton Robots. You can also view the LionsBot manufacturer page for other models in the range.

LionsBot R12 Rex Scrub Specifications

The table below prioritises figures shown on LionsBot’s current public R12 Rex Scrub product page as checked on 11 September 2026.

These figures should be treated as purchasing guidance rather than a substitute for the specification sheet supplied with the actual machine. Batteries, production revisions, regional packages and optional equipment can change operating characteristics.

Important R12 Rex Scrub Specification Discrepancies

This is one of the most important parts of the review.

LionsBot’s own public materials do not currently show one completely consistent specification set for the R12 Rex Scrub.

That does not necessarily mean any one document is wrong. The machine may have undergone hardware, battery or documentation revisions. It does mean buyers should avoid combining the most favourable number from every brochure into one imaginary configuration.

What should a buyer do?

Before signing the purchase order, request one dated technical document tied to the serial-number range or hardware revision being supplied. It should state at minimum:

• Robot operating and transport weight.
• Battery chemistry and capacity.
• Expected and maximum runtime.
• Charging time.
• LiDAR and sensor configuration.
• Maximum safe gradients.
• Required passage and turning dimensions.
• Environmental and ingress limits.
• Included software.
• Refuel Station compatibility.

Do not build your ROI model around an 8–10-hour historical runtime claim if the machine quoted to you has a different current battery specification.

This level of verification matters more than which number looks strongest in a brochure.

Cleaning Performance: Where the R12 Rex Scrub Is Strongest

The R12 Rex Scrub’s central advantage is scale.

Its two-disc cleaning deck provides an 810 mm cleaning path, while LionsBot publishes up to 80 kg of downward brush pressure. The combination targets the type of floor-cleaning work traditionally handled by larger commercial scrubbers rather than small autonomous service robots.

Practical productivity

LionsBot currently states an average practical efficiency of 1,500–2,500 m²/hr.

That distinction—practical rather than theoretical productivity—is useful. Real robotic cleaning includes turning, obstacle avoidance, overlap, route transitions and occasional waiting. Actual results can still fall below the published range if a site is congested or fragmented, so the number should be validated against the buyer’s own map.

80 kg of brush pressure

High downward force is relevant where floors need more than light maintenance cleaning. Examples can include:

• High-traffic public areas.
• Warehouse and logistics floors.
• Transport terminals.
• Shopping-centre common areas.
• Large food-court or event-space circulation zones after suitable pre-cleaning.
• Industrial hard floors compatible with the machine and selected pad or brush.

Pressure alone does not determine cleaning quality. Pad selection, detergent, water flow, soil type, floor material, speed and dwell time all affect the result.

810 mm cleaning width

A wide cleaning path reduces the number of passes required across a large floor. It also makes the machine physically larger.

That trade-off is central to the R12 purchasing decision:

On a 10,000 m² open route, width and tank capacity are advantages. In a narrow, highly partitioned site, they can become liabilities.

Drying performance

The robot uses a 950 mm squeegee behind the cleaning deck to recover waste water. LionsBot specifically markets the machine around strong floor-drying performance.

During a site trial, inspect the floor immediately after multiple turns as well as straight runs. Squeegee performance can change with wear, floor joints, turning behaviour, incorrect adjustment or debris trapped under the blade.

Autonomy, Navigation and Fleet Management

The R12 Rex Scrub combines autonomous cleaning with manual and touchscreen operation rather than locking users into one control mode.

3D LiDAR navigation

The current product page advertises 3D LiDAR coverage with a maximum diameter of 240 m. Older LionsBot documentation describes a sensor network including LiDAR, depth cameras and sonar together with 3D SLAM.

For a large facility, long-range localisation is useful because a robot may operate in spaces with long corridors, open halls or repeated structural features.

The purchasing test is still route-level reliability—not sensor range in isolation.

Test:

• Long open areas.
• Glass and reflective surfaces.
• Temporary displays.
• People crossing the route.
• Pallets and mobile equipment.
• Changed furniture layouts.
• Areas with weak geometric features.
• Repeated aisles that look similar.

Scheduling

LionsBot states that users can arrange autonomous cleaning schedules and monitor cleaning status remotely. This is crucial for moving from “robot demonstration” to actual cleaning operations.

A valuable robot should not need a specialist to manually launch every cleaning route.

LionsClean and fleet visibility

LionsBot’s software ecosystem includes mobile-based robot control and fleet-management functionality. Current and historical product material references the LionsClean app and cloud/dashboard tools for robot monitoring, schedules and performance information.

For a multi-robot deployment, verify:

• How many sites can be managed under one account.
• What cleaning reports are generated.
• Whether reports can be exported.
• How alerts are delivered.
• User permission levels.
• Whether remote operation is supported in your region.
• Data-hosting location and retention.
• What functionality requires internet connectivity.
• Whether software access carries an ongoing fee.

Autonomy does not mean zero staff involvement

Someone still needs to own:

• Route setup.
• Consumables.
• Recovery after exceptions.
• Squeegee and brush maintenance.
• Spill or debris preparation.
• Robot cleanliness.
• Software alerts.
• Changes to the environment.

The objective should be lower labour intensity per square metre—not the unrealistic expectation that the building never needs a cleaner again.

R12 Rex Scrub Refuel Station: The Key to Higher Autonomy

The optional Refuel Station is potentially one of the most valuable parts of the R12 system.

LionsBot’s published material describes the Rex returning automatically to the station after cleaning cycles, with station functionality designed around charging and water management. Previous documentation also describes automated rinsing and water exchange.

For a machine carrying 140 L of solution, automating service events can materially reduce staff intervention.

Why docking matters

A robot that autonomously cleans for hours but always needs a person to:

• drive it to a utility room,
• empty 140 L of dirty water,
• refill solution,
• connect charging, and
• restart the next route

is only partially autonomous.

The Refuel Station can change the operating model by reducing those repetitive service tasks.

But infrastructure is required

Before adding the station, confirm:

• Fresh-water connection requirements.
• Drainage requirements.
• Electrical supply.
• Minimum installation clearances.
• Floor level and drainage design.
• Backflow or plumbing requirements.
• Chemical handling arrangements.
• Whether local building approval is required.
• Recovery procedure if automatic docking fails.

A beautifully automated robot with an unsuitable utility-room installation can become a daily source of intervention.

Water Capacity, Chemical Dosing and Cleaning Consumables

The R12 Rex Scrub carries 140 L of clean water and 140 L of recovered waste water according to current LionsBot specifications.

That is one of its clearest advantages for large routes.

Why large tanks matter

Tank capacity affects more than headline productivity. Every manual refill interrupts productive cleaning and creates labour.

A high-capacity machine can therefore be particularly useful where:

• routes are far from cleaning rooms,
• one robot covers multiple large zones,
• cleaning occurs overnight, or
• labour is expensive enough that service interruptions matter.

Chemical system

LionsBot publishes:

• 5 L chemical pouch
• 1 L defoamer capacity

Earlier company documentation describes controlled chemical dosing designed to manage the chemical-to-water ratio.

This can improve consistency, but facilities should validate chemical compatibility with:

• the floor finish,
• pads or brushes,
• the recovery system,
• waste-water requirements, and
• manufacturer warranty conditions.

Do not automatically assume that “more chemical” or “more brush pressure” produces a better floor. The correct recipe depends on the surface and soil.

Battery Life, Charging and Real-World Duty Cycle

The current LionsBot R12 product page publishes up to 8 hours of runtime and an average charging time of 8–10 hours.

The charging time deserves almost as much attention as runtime.

Can the R12 Rex Scrub clean through an entire shift?

Potentially, yes—but “up to 8 hours” should not be interpreted as eight hours of uninterrupted maximum-output scrubbing at every site.

Runtime can be affected by:

• Brush pressure.
• Floor friction.
• Travel distance.
• Cleaning speed.
• Turns.
• Obstacle avoidance.
• Battery age.
• Machine configuration.
• Environmental conditions.

A meaningful pilot should record productive cleaning time, not simply elapsed time between unplugging and recharge.

The historical runtime discrepancy matters

Older LionsBot material has quoted both 8–10 hours and 5–6 hours for the Rex Scrub.

The current product page says up to 8 hours.

Therefore:

ask the supplier for the expected runtime of the exact battery and machine revision being quoted.

Charging strategy

With a published 8–10-hour charge, a site planning multiple shifts should ask whether the proposed configuration uses:

• one overnight charging cycle,
• swappable battery packs,
• a Refuel Station,
• additional battery infrastructure, or
• multiple robots with staggered schedules.

Older LionsBot material has specifically advertised swappable batteries for the Rex platform. Confirm whether that configuration applies to the machine currently available in your market.

Site Fit, Manoeuvrability and Safety

At approximately 1,675 mm long, 890 mm wide and 1,473 mm high, the R12 Rex Scrub needs to be treated more like autonomous industrial cleaning equipment than a small service robot.

Measure before you demo

Record:

• Door clear widths.
• Lift dimensions and rated load if inter-floor movement is planned.
• Corridor width.
• 90-degree turns.
• U-turn zones.
• Floor gradients.
• Thresholds and expansion joints.
• Low overhead clearances.
• Cleaning-room access.
• Refuel Station position.

Do not design around nominal machine width alone. The robot needs additional clearance for safe autonomous movement and turning.

Dynamic environments

Large shopping centres, transport hubs and warehouses are rarely static.

During acceptance testing, include:

• people crossing the route,
• trolleys,
• forklifts or pallet movers where relevant,
• temporary signage,
• chairs and displays,
• queues,
• doors,
• cleaning carts, and
• unexpected blocked paths.

The right question is not “Can it avoid an obstacle during the demo?”

The right question is:

“How many autonomous cleaning hours can the robot complete per week without human rescue under our normal operating conditions?”

Environmental rating

The current public R12 Rex Scrub page reviewed for this article does not state an IP ingress-protection rating.

Therefore, buyers should not infer washdown, heavy-rain or outdoor capability from the robot’s size or industrial appearance.

If your route includes partially exposed areas, ramps, loading docks, standing water or other harsh conditions, require written confirmation covering the complete machine and battery configuration.

Real-World R12 Rex Scrub Results: What Published Deployments Show

LionsBot has published a case study involving RS Facilities Services at Our Tampines Hub in Singapore, a large integrated community and lifestyle facility with a stated floor area of 121,600 m².

According to the manufacturer case study, one Rex Scrub was deployed for large-area autonomous cleaning.

How much weight should you give this evidence?

It is useful commercial evidence, but it comes from LionsBot’s own case-study material rather than an independent controlled trial.

Also, the case study uses historical runtime figures that differ from the latest current product-page specification.

Therefore, the published coverage should be treated as proof that a large deployment is possible—not as a guaranteed result for every current R12.

The useful pattern to copy

The deployment makes sense because:

• the site is extremely large,
• floor cleaning is repetitive,
• the robot is assigned a task suited to its physical scale, and
• human staff remain available for higher-value cleaning work.

That is the operating model buyers should replicate.

Best LionsBot R12 Rex Scrub Use Cases

1. Shopping centres and large retail common areas

One of the strongest fits. Large malls often contain long corridors, food-court circulation areas and open common spaces that require repetitive floor scrubbing every day.

The Rex’s large tanks are particularly valuable when the cleaning room is far from portions of the route.

2. Airports and transport terminals

Large terminals combine extensive hard-floor areas with long operating hours and expensive cleaning labour. Autonomous cleaning can take over lower-complexity zones while staff address spills, bathrooms, seating areas, edges and passenger-driven exceptions.

Peak passenger movement still needs careful route scheduling.

3. Warehouses and logistics facilities

Wide aisles and large concrete or coated floors can suit the machine well, provided loose debris is controlled.

Where sweeping and debris pickup are central requirements, compare the R12 Rex Scrub with cylindrical/sweeping alternatives rather than assuming disc scrubbing solves both jobs.

4. Exhibition and convention centres

The robot’s scale can be an advantage on large open floors between events.

The challenge is layout change: booths, partitions and furniture may completely alter the environment from one event to another.

5. Stadiums and large public venues

Concourse and back-of-house hard-floor areas may provide substantial repeatable routes, especially when cleaning is scheduled outside visitor peaks.

6. Manufacturing facilities

Large structured factory floors can be suitable where autonomous routes can be separated safely from production traffic.

Oil, metal debris, chemicals, gradients and floor contamination must be assessed against the exact cleaning system and safety requirements.

7. Parking structures

The R12’s scale and brush pressure may appear attractive for car parks, but buyers should validate gradients, ventilation, drainage, environmental exposure, tyre residue and interaction with moving vehicles.

Do not assume suitability solely from the size of the floor.

When the LionsBot R12 Rex Scrub Is Not the Right Robot

The Rex should be rejected when the facility cannot exploit its scale.

• Narrow layouts: a smaller cleaning robot will usually achieve better coverage with fewer blocked areas.
• Small facilities: 140 L tanks and a 1.68 m machine provide little advantage if the entire route can be cleaned quickly by a compact scrubber.
• Highly cluttered spaces: frequent chairs, displays, pallets or temporary objects can reduce productive autonomy.
• Carpet-dominant buildings: the R12 Rex Scrub is a hard-floor scrubber, not a carpet-cleaning platform.
• Heavy loose debris: evaluate a sweeping or cylindrical-brush platform, including the related R12 Rex CS, if pre-sweeping would otherwise consume substantial labour.
• Rapid multi-shift charging requirements: the current 8–10-hour charging figure needs careful operational planning.
• Unverified outdoor use: require written environmental suitability before using the robot in exposed conditions.
• No on-site owner: somebody still needs to own consumables, exceptions, maintenance and performance.
• No measurable labour baseline: without knowing the current cost and time of floor cleaning, it is difficult to prove whether the robot is financially worthwhile.

For a more compact LionsBot option, compare the LionsBot R3 Scrub Pro. You can also review the newer LionsBot R5 depending on the site’s size and required cleaning workflow.

LionsBot R12 Rex Scrub vs Gausium Scrubber 75, Tennant X6 ROVR and Kärcher KIRA BR 200

There is no universally “best” autonomous floor scrubber. These machines differ significantly in physical size, water capacity, cleaning deck, battery technology, autonomy stack, local service and infrastructure.

The table below uses public manufacturer specifications available in September 2026. Productivity figures are not always measured under equivalent conditions, so they should not be treated as a laboratory ranking.

Choose the R12 Rex Scrub when:

• 140 L tank capacity materially reduces service interruptions.
• You have large open routes that can exploit an 810 mm cleaning path.
• High brush pressure is important.
• LionsBot support and deployment capability are strong in your region.

Shortlist Gausium Scrubber 75 when:

• Water recycling is valuable.
• Complex sensing or car-park-specific configurations matter.
• You want a somewhat smaller machine.

Shortlist Tennant X6 ROVR when:

• You want a significantly smaller footprint.
• A 95 L tank is sufficient.
• Local Tennant servicing is a major procurement factor.
• Lithium-ion charging and BrainOS workflows better fit your operation.

Shortlist Kärcher KIRA BR 200 when:

• Your facility can accommodate a still larger machine.
• Very high water capacity is a priority.
• You want to evaluate the top end of the autonomous ride-on-scale scrubber category.

Use the Anton Robots comparison tool to narrow options based on your site rather than choosing from headline specifications alone.

Is the LionsBot R12 Rex Scrub Worth It?

The R12 Rex Scrub is financially attractive when enough repetitive large-area scrubbing can be transferred from paid operator time to reliable autonomous operation.

It is poor value when its physical size limits coverage or when staff constantly need to prepare, rescue, refill or reposition it.

Start with the current cleaning operation

Measure:

• Square metres scrubbed per day.
• Operator hours required.
• Number of shifts.
• Average labour cost per hour.
• Water and chemical use.
• Ride-on scrubber capital and maintenance cost.
• Time lost refilling and emptying tanks.
• Overtime or night-shift premiums.

Then calculate:

Annual labour opportunity = operator hours transferable to the robot × fully loaded hourly labour cost.

Add other measurable benefits such as:

• More frequent cleaning.
• Greater consistency.
• Reduced physical strain from long ride-on or walk-behind cleaning routes.
• Better documentation.
• Ability to redirect staff to detail cleaning and customer-facing work.

Then subtract:

• Robot cost.
• Refuel Station and installation.
• Software.
• Maintenance.
• Consumables.
• Battery replacement.
• Training.
• Staff supervision.
• Downtime.

Payback formula

Monthly net benefit = monthly labour/operational benefit − monthly robot operating cost.

Payback period = total implementation cost ÷ monthly net benefit.

The biggest ROI mistake

Do not multiply 2,500 m²/hr by eight hours and assume the robot automatically delivers 20,000 m² of useful cleaning every day.

Actual productivity must account for:

• route transitions,
• obstacles,
• turning,
• water servicing,
• charging,
• blocked areas,
• maintenance, and
• human interventions.

Track verified autonomous square metres per paid labour-hour of supervision. That is much closer to the real economic value.

LionsBot R12 Rex Scrub Buying Checklist

1. Measure the floor area. Separate truly autonomous open space from bathrooms, stairs, carpet, narrow corridors and inaccessible zones.
2. Measure all routes. Door widths, aisle widths, corners, lift dimensions, ramps and turning areas.
3. Document the current cleaning process. Labour-hours, ride-on equipment, frequency, chemicals and service time.
4. Define cleaning outcomes. Do not use “clean floor” as the only acceptance criterion; identify soil types and required finish.
5. Confirm the exact specification revision. Resolve runtime, weight, battery and LiDAR discrepancies in writing.
6. Check loose debris. Determine whether pre-sweeping is required or whether a cylindrical/sweeping robot is more appropriate.
7. Choose brushes and pads. Test the actual floor material and contamination.
8. Validate floor drying. Inspect straight runs, turns and transitions.
9. Test navigation during real operations. Include pedestrians, trolleys, moving equipment and temporary obstacles.
10. Measure intervention rate. Record every time staff must rescue, reposition or restart the robot.
11. Plan charging. Confirm the realistic battery cycle for every shift.
12. Evaluate the Refuel Station. Check plumbing, drainage, power and installation requirements.
13. Review software. Understand scheduling, reporting, users, data hosting and recurring fees.
14. Review environmental limits. Get written approval for any wet, dusty, outdoor or partially exposed route.
15. Confirm service coverage. Identify who repairs the robot locally and expected response times.
16. Request three- or five-year TCO. Include batteries, wear parts, software and support.
17. Run a representative pilot. Do not test only an empty demonstration area.
18. Set acceptance criteria before the pilot. Route completion, intervention frequency, cleaning quality, productivity and labour savings should all be measurable.

Pro tip: give the supplier your most difficult representative route, not your easiest open lobby. A successful trial should expose the limits before purchase rather than after deployment.

How to Buy the LionsBot R12 Rex Scrub

The R12 Rex Scrub is sold through a consultative commercial process rather than a simple public online checkout.

A useful enquiry should include:

• Total cleanable floor area.
• Floor plans.
• Photos and videos of representative routes.
• Floor materials.
• Current cleaning frequency.
• Current labour-hours.
• Types of soil and debris.
• Door and corridor dimensions.
• Ramp gradients.
• Cleaning-room location.
• Water, drain and power availability.
• Working hours and pedestrian traffic.
• Target deployment date.

Ask the supplier to propose the entire operating solution rather than only the robot.

That should include:

• machine configuration,
• battery,
• pads/brushes,
• chemicals,
• Refuel Station if appropriate,
• mapping,
• training,
• software,
• maintenance, and
• local support.

View the LionsBot R12 Rex Scrub at Anton Robots for product information and current supplier options. If you are not certain that the Rex is the correct format for your building, compare other commercial cleaning robots before requesting a quote.

What Should R12 Rex Scrub Buyers Verify in 2026?

LionsBot’s current website continues to market the R12 Rex Scrub as its large-area heavy-duty scrubbing platform. However, the public documentation available around the model spans several years and includes multiple specification sets.

For a 2026 purchase, prioritise the configuration actually being supplied now.

1. Current battery and runtime

The current page says up to eight hours, while earlier documentation has shown different runtime ranges.

Require the battery model, capacity and expected runtime in your commercial specification.

2. Current machine weight

The current public product page and historical brochures differ materially on machine weight.

This matters for:

• lifts,
• floor loading,
• transport,
• ramps, and
• manual recovery.

Confirm both operating and transport weight.

3. Current navigation hardware

Current marketing lists up to 240 m 3D LiDAR coverage, while older documentation discusses 200 m.

Ask which sensor suite is fitted to the unit quoted.

4. Refuel Station capability

Confirm exactly which processes the station automates on the current version:

• charging,
• fresh-water filling,
• waste-water draining,
• rinsing,
• chemical handling, and
• automatic mission continuation.

5. Local support

For a large autonomous floor scrubber, local implementation quality can matter as much as robot specifications.

Ask who will:

• map the site,
• optimise routes,
• train staff,
• respond to faults,
• hold spare parts, and
• maintain the machine over its economic life.

LionsBot R12 Rex Scrub FAQ

What is the LionsBot R12 Rex Scrub?

The R12 Rex Scrub is a large autonomous commercial floor scrubber designed for repetitive hard-floor cleaning in large facilities. It combines dual disc brushes, high brush pressure, large water tanks, autonomous navigation and software-based fleet management.

How much does the LionsBot R12 Rex Scrub cost?

LionsBot does not publish a universal current 2026 list price on its main R12 product page. Buyers should request a quote covering the exact robot configuration, software, commissioning, support and any Refuel Station infrastructure.

How wide does the R12 Rex Scrub clean?

LionsBot currently publishes an 810 mm, or 31.9-inch, cleaning width.

How much brush pressure does it have?

The manufacturer publishes up to 80 kg, or 176 lb, of brush pressure.

How large are the water tanks?

The R12 Rex Scrub has a published 140 L clean-water tank and 140 L waste-water tank.

How much area can the R12 Rex Scrub clean per hour?

The current LionsBot product page states average practical efficiency of approximately 1,500–2,500 m²/hr. Actual site productivity will depend on the route, floor, obstacles, speed and service interruptions.

How long does the LionsBot R12 Rex Scrub run?

The current product page states up to eight hours. Older LionsBot documents have published different figures, including 5–6 hours and 8–10 hours, so buyers should confirm the runtime of the exact machine revision being quoted.

How long does it take to charge?

LionsBot currently lists an average charging time of 8–10 hours.

Is the battery swappable?

Historical LionsBot documentation has advertised swappable batteries for the Rex platform. Confirm the battery arrangement of the current regional configuration before basing shift planning on battery swapping.

Is the R12 Rex Scrub fully autonomous?

It supports autonomous cleaning and scheduled operation, but full operational autonomy depends on the site and configuration. Water servicing, charging, obstacles, consumables and faults still need to be managed. An optional Refuel Station can automate additional service processes.

Can it be used manually?

Yes. LionsBot documentation describes autonomous, manual and touchscreen control options.

Does it have a docking station?

LionsBot offers an optional Refuel Station for the Rex platform. Buyers should confirm the exact charging, water-management and mission-continuation functions included in the current version.

What navigation does the R12 Rex Scrub use?

LionsBot advertises long-range 3D LiDAR and has described 3D SLAM-based autonomous navigation in its Rex documentation.

What is the LiDAR range?

The current product page states maximum 3D LiDAR coverage of 240 m in diameter. Older documentation lists approximately 200 m, so the sensor configuration should be confirmed with the supplier.

How loud is the R12 Rex Scrub?

The current LionsBot product page publishes an average sound level of 70 dB. Earlier documentation has listed a different figure, so confirm the specification of the supplied version if noise is critical.

Can it pick up debris?

The R12 Rex Scrub is primarily a disc scrubber. It should not be confused with the R12 Rex CS, which uses a cylindrical scrubbing system and debris tray. If loose debris is common, compare the two cleaning mechanisms carefully.

Is the R12 Rex Scrub good for warehouses?

It can be a strong fit for large warehouse floors with sufficient clear space and controlled debris. Routes involving pallets, forklifts, ramps, loading areas or loose material need a site-specific trial.

Is it good for shopping malls?

Yes, large mall common areas are one of the more logical applications because they combine extensive hard flooring with repetitive cleaning. Crowds, kiosks and frequently changing obstacles should be included in testing.

Can the R12 Rex Scrub clean airports?

Its size, runtime and large-area orientation make transport hubs a plausible use case. Autonomous routes should be tested during realistic passenger and trolley traffic rather than only during an empty demonstration.

Can the R12 Rex Scrub work outdoors?

Do not assume so. The current public product page reviewed for this article does not provide an IP rating sufficient to establish outdoor or exposed-weather suitability. Obtain written confirmation for the exact environment.

Can it use elevators?

Potential elevator use depends on machine dimensions, loaded weight, turning space, door width, lift capacity, controls and integration. Confirm all of these before designing a multi-floor deployment.

What is the difference between R12 Rex Scrub and R12 Rex CS?

The Rex Scrub uses two disc brushes or pads and is focused on heavy scrubbing. The Rex CS uses cylindrical brushes, side brushes and a debris tray, making it more appropriate where simultaneous debris pickup and scrubbing are priorities.

What are the best alternatives to the R12 Rex Scrub?

Large-area alternatives include the Gausium Scrubber 75, Tennant X6 ROVR and Kärcher KIRA BR 200. A smaller robot such as LionsBot’s R3 Scrub Pro may be more appropriate when manoeuvrability is more important than tank capacity.

Is the LionsBot R12 Rex Scrub worth it?

It can be when a facility has enough suitable floor area to transfer several recurring operator-hours into reliable autonomous cleaning. It is unlikely to justify its scale when routes are small, narrow or fragmented.

Final Verdict: Should You Buy the LionsBot R12 Rex Scrub?

Buy or pilot the LionsBot R12 Rex Scrub when your cleaning problem is genuinely large.

Its appeal comes from combining an 810 mm cleaning width, up to 80 kg of brush pressure, 140 L clean- and waste-water tanks, long autonomous cleaning cycles and infrastructure designed to support large repeatable routes.

That makes it fundamentally different from the compact robots that dominate much of the autonomous-cleaning market.

The trade-off is scale. The Rex needs room. It needs a well-designed route. It needs charging and water infrastructure. And because LionsBot’s public specifications have changed across different documents, a professional procurement process should lock down the exact machine revision rather than relying on a mixture of historical brochure figures.

For the right airport, mall, warehouse, convention centre or other high-square-metre facility, those compromises can make sense. The robot can take over the monotonous bulk-cleaning portion of a shift and let staff spend more time on detail work and exceptions.

For the wrong building, the same 140 L tanks and heavy-duty chassis become unnecessary weight and size.

The smartest purchasing process is therefore mission-led: measure the route, calculate current labour cost, test the exact robot in representative traffic, record every intervention, verify actual cleaning productivity and only scale once the numbers hold.

Ready to evaluate one? View the LionsBot R12 Rex Scrub at Anton Robots, explore the wider LionsBot range, or use the Anton Robots comparison tool to compare alternative cleaning robots.