{"product_id":"tornado-ob-28-20-orbital-walk-behind-scrubber-ts550-w28-u-3530-rpm-132-lbs-pressure","title":"Tornado OB 28\/20 Orbital Floor Scrubber – Walk-Behind, 3530 RPM, 110 Lbs, TS550-W28-U","description":"\u003ch2\u003eTornado OB 28\/20 Orbital Floor Scrubber\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eTornado OB 28\/20\u003c\/strong\u003e (models TS550-W28-UC \/ UG) is the high-output orbital in Tornado's walk-behind line: a 28\" rectangular scrub head that reaches corners and baseboards, running at \u003cstrong\u003e3,530 RPM\u003c\/strong\u003e for chemical-free finish removal. Up to 132 lbs of adjustable down pressure handles heavy buildup on VCT, terrazzo, and polished concrete, while 20-gallon solution and 22-gallon recovery tanks support 3–4 hours of continuous work. A 300W traction drive climbs ramps to 10% grade with full tanks, making it a fit for universities, convention centers, and large healthcare campuses where a 20\" orbital is too slow.\u003c\/p\u003e\n\u003ch3\u003eOB 28\/20 Orbital Speed, Pressure, and Tank Capacity\u003c\/h3\u003e\n\u003cp\u003eWhat separates the OB 28\/20 from the OB 20\/14 is orbital speed and tank size: 3,530 RPM versus 2,200 RPM strips finish more aggressively per pass, and the 20\/22-gallon tanks run well past the 14\/14-gallon set on the smaller machine.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e3,530 RPM orbital speed\u003c\/strong\u003e — the highest RPM in Tornado's walk-behind orbital line; removes finish in fewer passes and shorter cycles than the OB 20\/14\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e28\" rectangular scrub head\u003c\/strong\u003e — reaches corners and baseboards across a 28\" path; one pass covers edge to wall with no secondary hand scrub\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e132 lbs adjustable down pressure\u003c\/strong\u003e — 20% more than the OB 20\/14; clears heavy-buildup stripping on high-traffic VCT, terrazzo, and polished concrete\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e20-gal solution \/ 22-gal recovery tanks\u003c\/strong\u003e — the extra 6 gallons over the OB 20\/14 adds roughly 45 minutes of runtime before refill\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e300W traction motor\u003c\/strong\u003e — fully loaded ramp capability to 10% grade without operator push\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLifetime warranty on isolators\u003c\/strong\u003e — vibration isolation that guards against hand-arm vibration syndrome (HAVS) on multi-hour shifts\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eOB 28\/20 Applications and Environments\u003c\/h3\u003e\n\u003cp\u003eUniversities and large K-12 districts with gym floors, wide hallways, and open commons are the primary fit. A 28\" path and large tanks clear a typical 50,000 sq ft building in a single overnight shift. Convention centers and hotel ballrooms with VCT or polished concrete run it for finish-removal cycles that would take several passes with a smaller orbital or standard disc machine. Large healthcare campuses with multi-building terrazzo corridors specify it for both daily maintenance and periodic strip-and-recoat on one platform. Grocery distribution centers and food plants with sealed concrete use it for daily moisture management and periodic deep scrubbing without chemical strippers.\u003c\/p\u003e\n\u003ch3\u003eWhat Ships in the Box\u003c\/h3\u003e\n\u003cp\u003eEvery OB 28\/20 arrives complete with front squeegee, rear squeegee, and on-board 24V charger. Lead Acid (TS550-W28-UC) includes four 99506 6V Lead Acid batteries; AGM (TS550-W28-UG) includes four 99558 AGM batteries. Pad options — black stripping, blue cleaner, red spray buff, and maroon eco — are sold separately.\u003c\/p\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\n\u003ctable\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eTS550-W28-UC (Lead Acid) \/ TS550-W28-UG (AGM)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCleaning Path\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e28\" orbital (rectangular head)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBrush Speed\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3,530 RPM orbital\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBrush Pressure\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUp to 132 lbs (adjustable)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSolution Tank\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e20 gallons\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRecovery Tank\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e22 gallons\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRuntime\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3–4 hours per charge\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSystem Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e24V\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTraction Motor\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e300W (handles up to 10% grade)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSound Level\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;70 dB(A)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight (without batteries)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e348 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e60\" L × 30\" W × 41\" H\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eIsolator Warranty\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLifetime\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch3\u003e\u003c\/h3\u003e\n","brand":"Tornado","offers":[{"title":"Lead Acid Batteries","offer_id":47744653426845,"sku":"TS550-W28-UC","price":12200.0,"currency_code":"USD","in_stock":true},{"title":"AGM Batteries","offer_id":47744653459613,"sku":"TS550-W28-UG","price":13650.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0651\/8112\/2717\/files\/product-41756191686813.webp?v=1774438318","url":"https:\/\/uscleaningtools.com\/products\/tornado-ob-28-20-orbital-walk-behind-scrubber-ts550-w28-u-3530-rpm-132-lbs-pressure","provider":"US Cleaning Tools","version":"1.0","type":"link"}