Stop paying for slow, messy cleaning when you can get real results in a single pass.
The Nobles SS500 Orbital 28″ turns long, grueling floor cleaning sessions into fast, controlled passes. Unlike traditional disk scrubbers that sling dirty water outward, the orbital head uses rapid micro-jittering to keep cleaning solutions under the deck—maximizing disinfectant performance while keeping water off your walls, racks, and baseboards.
Whether you’re tackling heavy shop grease, maintaining warehouse concrete, or deep-cleaning congested commercial spaces, the SS500 delivers uniform, dry floors without swirl marks or complex controls.
(Yes. Effortlessly.)
We kept it simple. You shouldn’t have to think about cleaning your floors—and it definitely shouldn’t take all afternoon.
Works everywhere: Concrete, epoxy, or tile—whether it’s a grease-covered mechanic shop, a farm building, or a giant warehouse.
One simple pass: Scrubs, dries, and gets out of your way so your team can focus on their actual jobs.
Zero hassle: Turn the key, steer, and you’re done.
Quick verdict: If you have a floor and 10 minutes, this works. Clear out the grime, save hours, move on with your day.
We only ship high-quality, ready-to-work floor machines, and we guarantee bumper-to-bumper follow-up support every step of the way. That’s why more facilities nationwide choose Robey’s PowerKleen for dependable refurbished equipment and real support after the sale.
How Our Packages Work:
Every option includes the exact same Orbital 28” Nobles SS500 machine, fully refurbished and 100% Performance-Certified inspected. We created three value-packed tiers—Silver, Gold, and Platinum—so you can choose the right fit for your budget. Higher tiers simply give you longer battery runtimes, longer warranties, and extra cleaning accessories.
Orbital Scrubbing (Best for High-Efficiency & Zero Mess):
Uses rapid jittering action rather than centrifugal spinning. The micro-agitation maximizes detergent activation for deep cleaning and surface disinfection—without slinging water or chemicals onto baseboards, walls, or equipment.
Standard Disk Scrubbing (Best for Daily Open-Floor Cleaning):
Uses traditional spinning round pads/brushes. Ideal for standard daily dirt cleanup and routine maintenance scrubbing across open floor space.
Think Toyota vs. Lexus. Tennant owns Nobles as a value-focused line to compete on lower-price bids without discounting the main Tennant brand. While built on the exact same foundation using identical core components, here are the main differences:
Because Nobles units cost us less to acquire, we pass those extra savings directly to you — giving you the exact same heavy-duty cleaning performance at our absolute lowest price point.
We'll match any fair price. What we won't match is a stripped-down machine, a mystery warranty, and a support line that never answers.
No endless paperwork or waiting 5 business days for a response.
Before you click "Buy" on a stripped-down unit — talk to us first. It costs you nothing to ask!
Built on Tennant’s world-class engineering platform, the Nobles SS500 Orbital delivers high-frequency orbital scrubbing power without overcomplicated electronics. Unlike traditional disk scrubbers, the orbital deck delivers uniform pad pressure—allowing you to scrub deeper, conserve water and solution, and keep splash off baseboards and equipment. Heavy-duty performance engineered for a deep, professional clean with zero headaches.
High-speed micro-jittering deeply agitates detergents and disinfectants into the floor surface—breaking down heavy grease without slinging water onto walls or baseboards.
Orbital motion keeps cleaning solution contained directly under the pad. No spinning brushes throwing dirty water onto baseboards, pallet racks, or retail displays.
Stop mopping corners by hand. With its compact 28" design, this walk-behind scrubber glides easily through narrow racks and tight aisles without breaking a sweat.
Total cord-free performance. Move through warehouses, school hallways, and busy retail floors without tripping over wires or hunting for outlets.
Orbital technology keeps solution under the pad longer, cutting water and chemical usage by up to 70% so you spend less time refilling tanks.
Low noise output lets you clean during business hours without interrupting staff, students, or customers.
Download Our Spec Sheet and Our Buyer Guide
Take the 1-minute form and get a personalized recommendation.
PowerKleen has been excellent to work with from start to finish. Their customer service is top-notch, their parts selection is outstanding, and their technical support team is always quick to help with answers and recommendations.We purchased a Noble SS5 with the lithium battery upgrade, and it has been an awesome machine for our Chevrolet dealership. Reliable, efficient, and a huge improvement for keeping our facility clean and looking professional every day.Highly recommend PowerKleen to any dealership or business looking for quality equipment and people you can count on.
Our business bought a used floor scrubber from this family business and have been very pleased! We have now had the machine almost 6 months and our refurbished Nobles SS5 is a workhorse that leaves floors spick and span. Their communication skills are top notch; even after the purchase was finalized. Erica, has especially been very helpful in helping us get acquainted with this machine and its particular ins and outs. I would highly recommend this company when looking to purchase something for your floor cleaning needs.
We have multiple T7 riding floor scrubbers that we currently rent to own. They are high quality machines, with great warranties. We have multiple things break while cleaning 15 garages, and they have done a great job sending parts over night. They are also family owned, so they really care about my business as an owner. The owner Josiah actually took my call on the weekend and help me troubleshoot my machine. 5 star company for sure!
We currently rent to own multiple machines with Robey’s Powerkleen here in Madison Wisconsin and it’s been the best experience as a business owner.We current clean over 15 garages so the machines get a lot of wear and tear, and they replace parts the next day. Why buy a new machine when you can rent to own one, and have the parts cover by warranty.They are a family owned business that is great to work with.James – Smart Cleaning Solutions
We purchased a Tennant t7 after receiving feedback back from Erika on what best fit our needs. She know her machines and applications. Super glad we listened and have been pleased with the t7.
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