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Home/Floor Buffers/Mercury Floor Machines DC-21-1500 Burnisher – 21", 1500 RPM
Mercury Floor Machines DC-21-1500 Burnisher – 21", 1500 RPM

Mercury Floor Machines DC-21-1500 Burnisher – 21", 1500 RPM

SKU: DC-21-1500In stock
$2,238.00
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Mercury DC-21-1500: 21" Burnisher at 1500 RPM for Controlled Gloss

The DC-21-1500 runs a 21" pad at 1500 RPM — positioned between the 1170 RPM entry model and the 2000 RPM ultra-high-speed version. That mid-range speed delivers measurable gloss improvement on VCT and hardwood without the heat buildup or friction marks that a 2000 RPM machine can leave on softer finishes.

DC-21-1500 Motor and Pad Specifications

  • Pad size: 21" — covers more square footage per pass than 19" or 20" models
  • Speed: 1500 RPM — mid-range between the DC-21-1170 (1170 RPM) and DC-21-2000 (2000 RPM)
  • Machine weight: 86 lbs — provides consistent downward pad pressure without operator effort
  • Motor type: D.C. direct-current drive — sustained torque at rated speed under full pad load
  • Compatible pads: White, tan, or natural fiber burnishing pads only; never use stripping or scrubbing pads at this speed

Where 1500 RPM Fits in Commercial Cleaning

A 1500 RPM burnisher suits facilities that need a visible shine without running the highest-heat machine on the floor. Grocery stores, retail chains, and office buildings with VCT or urethane-coated hardwood benefit from this speed range: enough friction to thermally bond the finish layer, not so much that the pad glazes or burns soft finishes. For facilities with a mix of floor types — some areas with older finish, others recently stripped and recoated — the 1500 RPM speed offers a workable middle ground that the 2000 RPM model does not. If the goal is dry-bright restoration on a single finish type with no variation, the DC-21-2000 is faster; if the floor is sensitive or the finish is thin, step down to the DC-21-1170.

Burnisher Pad Selection and Heat Cycle at 1500 RPM

At 1500 RPM, pad choice directly controls gloss output. White pads produce a harder, higher-gloss result because they generate more friction heat per pass. Tan pads are softer and leave a satin finish that masks minor scratches without fully filling them. Natural fiber pads (sisal or tampico blends) reduce heat transfer and work well on urethane or water-based finishes where thermoplastic bonding is less desirable. On each pass, allow the pad to complete the heat cycle — the finish should feel warm to the touch, not hot. Overlapping passes by 2–3 inches prevents lap marks.

Specification Value
Model DC-21-1500
Pad Size 21"
Speed 1500 RPM
Machine Weight 86 lbs
Motor Type D.C. Direct-Current Drive
Compatible Pads White, Tan, Natural Fiber

Documents

Owner's Manual · Parts List · Sell Sheet · Wiring Diagram

Manufacturer's Warranty

This product comes with a full manufacturer's warranty. All warranty claims are handled directly by the manufacturer.

For specific warranty details, please contact us at +1 (978) 295-7538 or email info@uscleaningtools.com

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  3. Place your order and sales tax will not be charged.

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Frequently Asked Questions

What is the difference between the DC-21-1500 and DC-21-1170?
The DC-21-1500 runs at 1500 RPM versus 1170 RPM on the DC-21-1170. Both use a 21" pad and weigh 86 lbs. The 1500 RPM model produces more friction heat per pass, which delivers a higher gloss level on VCT and urethane finishes. The 1170 RPM model is preferred for thinner finishes or older floors that are more susceptible to heat damage.
How does the DC-21-1500 compare to the DC-21-2000?
The DC-21-2000 runs at 2000 RPM — 500 RPM faster than the DC-21-1500 — and is designed for dry-bright restoration on high-build finish in one pass. The DC-21-1500 at 1500 RPM takes slightly more passes to reach peak gloss but is safer on softer or thinner finishes where the 2000 RPM model can cause heat marks or pad glazing.
What pads are compatible with the DC-21-1500?
Use white, tan, or natural fiber burnishing pads only on the DC-21-1500. White pads produce the highest gloss due to greater friction heat. Tan pads give a satin finish. Natural fiber pads (sisal or tampico blends) are best for urethane or water-based finishes. Never use stripping pads, scrubbing pads, or red pads at 1500 RPM — the speed and machine weight will damage both the pad and the finish.
How large an area can the DC-21-1500 burnish per hour?
At 1500 RPM with a 21" pad, the DC-21-1500 covers approximately 12,000–15,000 square feet per hour depending on operator walking speed and the number of passes required to reach target gloss level. Facilities with a single consistent finish type will fall at the higher end of that range.
Is the DC-21-1500 suitable for hardwood floors?
Yes, but pad selection is critical. Use natural fiber or tan pads on hardwood floors with urethane or oil-based finishes. White pads generate enough heat at 1500 RPM to cause finish clouding on hardwood if the machine is slowed or stopped mid-pass. Keep the machine moving at a consistent walking pace throughout each pass.

Parts & Accessories That Fit the Mercury Floor Machines DC-21-1500 Burnisher

Confirmed-fit wear parts and accessories for this machine. Not sure which you need? Call 9782957538.

Part or accessorySKU
Namco Premier Kote – 1-Gallon, Case of 4 (2030C) 2030C
Namco Beauty Kote – 1-Gallon, Case of 4 (2513C) 2513C
Namco First Kote Floor Sealer – 1-Gallon, Case of 4 (2069C) 2069C

How the Mercury Floor Machines DC-21-1500 Burnisher Compares to Other Mercury Floor Machines floor machines

The closest 5 models from the 9 Mercury Floor Machines floor machines we carry, by capacity. Not sure which size fits the job? Call +1 (978) 295-7538.

This modelMercury Floor Machines DC-21-1500 Burnisher Mercury Floor Machines DC-21-1500 Burnisher
Mercury Floor Machines Ultra DC Burnisher DC-20-1500 Mercury Floor Machines Ultra DC Burnisher DC-20-1500Mercury Floor Machines DC-20-1100 Ultra DC Burnisher Mercury Floor Machines DC-20-1100 Ultra DC BurnisherMercury DC-21-2000 Ultra D.C. High-Speed Burnisher Mercury DC-21-2000 Ultra D.C. High-Speed BurnisherMercury DC-21-1170 Ultra D.C. High-Speed Burnisher Mercury DC-21-1170 Ultra D.C. High-Speed Burnisher
Price$2,238$2,416$2,316$2,298$2,218
Size21 in20 in20 in21 in21 in
Pad speed1,500 RPM1,500 RPM1,100 RPM2,000 RPM1,170 RPM
Weight86 lb85 lb—89 lb86 lb
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