The Mercury Ultra DC 20-inch Burnisher is a high-speed (2,000 RPM) electric floor machine built for custodial crews and building service contractors who need a deep, durable shine on maintained floor finish. Unlike a low-speed scrubber, a burnisher spins a soft pad fast enough to heat and polish the finish, restoring gloss on VCT, terrazzo, and polished concrete in schools, retail, healthcare, and office corridors.
Built for these jobs
- High-gloss burnishing - polish floor finish to a wet-look shine between scrub-and-recoat cycles.
- Daily and weekly maintenance - keep high-traffic lobbies, hallways, and sales floors bright with a fast 20-inch pass.
- Spray buffing prep - work in maintenance solution and remove light scuffs and heel marks.
Why the DC rectified motor matters
The 1.5 HP D/C rectified motor is engineered to eliminate the brown-outs, low-voltage drop, and start-up torque problems that plague ordinary burnishers on long extension cords and busy circuits, so the pad holds speed for consistent results. A flexible, auto-centering pad holder conforms to floor irregularities to keep even pad pressure across the full 20-inch path, and the precision-balanced all-metal chassis with full-coverage bumper protects walls and baseboards.
Specifications
- Model Number: DC-20-2000 (Ultra DC high-speed burnisher)
- Pad Size: 20-inch; includes a flexible auto-centering pad driver
- Motor: 1.5 HP D/C rectified (resists brown-outs and low-voltage drop)
- Pad Speed: 2,000 RPM (high speed)
- Chassis: Precision-balanced all-metal, low-profile apron with full-coverage bumper
- Handle: Fully adjustable with interlocked safety switch
- Wheels: 6-inch non-marking retractable wheels; front caster assembly included
- Power Cord: 50-foot, 14/3-gauge safety power cord
Frequently Asked Questions
What is the difference between a burnisher and a low-speed floor buffer?
A low-speed buffer (175 RPM) is for stripping, scrubbing, and spray buffing. A burnisher like the DC-20-2000 spins at 2,000 RPM to polish maintained floor finish to a high, wet-look gloss. You strip and scrub with the low-speed machine, then maintain the shine with the burnisher.
What pad should I use on the DC-20-2000?
Use a burnishing pad matched to your finish - white or natural-blend pads for the highest gloss, and tan or aqua pads for routine maintenance. Avoid aggressive stripping pads on a high-speed burnisher. Replace pads before they load up with finish to keep the shine even.
Why does the DC rectified motor matter?
Ordinary high-speed burnishers can lose pad speed when voltage drops on long cords or shared circuits, which leaves an uneven finish. The 1.5 HP DC rectified motor is built to resist brown-outs, low voltage, and start-up torque problems, so the pad holds 2,000 RPM and the gloss stays consistent.
Will it leave swirl marks or burn the finish?
The flexible auto-centering pad holder conforms to the floor to keep even pad pressure across the 20-inch path, which helps prevent swirl marks and burn spots. Keep the machine moving, use a clean pad, and match the pad to your finish for best results.
Discount Cleaning Products is an authorized Mercury Floor Machines dealer, and our US-based team can help you choose the right burnishing pads for your finish. Mercury backs the Ultra DC burnisher with a 5-year motor and chassis warranty.
