Description
DeWalt DCM849B 20V MAX XR 7" Cordless Variable-Speed Rotary Polisher (Tool Only)
High-Output XR Brushless Motor Core. dual-Stage Variable Speed Trigger & Dial Control. High-Friction Non-Marring Protective Rubber Overmolds.
The DEWALT DCM849B Rotary Polisher features a high-efficiency brushless motor, a variable speed dial (800-2200 RPM), a sideways battery configuration, and non-marring rubber gear case overmolds to deliver flawless automotive paint and marine gelcoat correction without cord clutter.
The DEWALT DCM849B 20V MAX 7" Cordless Polisher brings scratch-free paint correction, heavy gelcoat oxidation stripping, and untethered cord-free detailing freedom directly to your automotive body shop garage, marine detailing dock, or structural glass-polishing layout. Purpose-built to eliminate the serious hazard of power cords dragging across fresh clear coats, the frustrating bog-down stalls of brushed motors under heavy buffing pressure, and the excessive arm fatigue caused by poorly balanced buffers, this premium XR professional rotary buffer establishes an elite industry standard. It arms professional automotive detailers, boat restoration crews, fiberglass fabricators, and glass restoration mechanics with a high-torque correction asset explicitly optimized to refine micro-scratches, level deep orange peel texture, polish boat hulls, and clarify headlights smoothly.
Exceptional torque retention and an elite, paint-safe handling platform serve as the engineering foundation for this robust DEWALT 20V MAX XR Polisher. Driven by an advanced XR brushless motor that delivers up to 75% more runtime over legacy brushed tools, the tool maintains a crisp, unwavering no-load speed matrix ranging from 800 up to 2,200 RPM. This velocity is managed through an intuitive pairing of a variable-speed dial and a progressive accelerator trigger. The chassis features a unique sideways-oriented battery orientation that prevents the battery case from scraping against horizontal vehicle panels during deep passes. The tool is protected by a high-friction rubber gear case overmold that shields delicate automotive body lines from accidental impact damage while providing multiple secure gripping surfaces.
Why the DEWALT® XR® DCM849B Rotary Polisher Leads the Detailing Bay:
- Untethered Cordless Mobility: Eliminates the hazard of dragging heavy extensions over fresh, polished paint lines, allowing you to walk freely around vehicles.
- Up to 75% More Brushless Uptime: High-efficiency motor delivers optimized battery consumption curves and stays cool during long, repeating pad corrections.
- Dual-Control Precision 2200 RPM: Pairs an electronic variable speed dial with a featherable trigger to smoothly manage speed ranges from 800 to 2,200 RPM.
- Sideways Paint-Safe Battery Orientation: Keeps the heavy battery block turned horizontally out of the way, preventing panel scratches during vertical buffing passes.
- Protective Non-Marring Gear Case: Shrouded in premium overmolded rubber to dampen operational vibrations and safeguard vehicle body lines if the tool nose touches the paint.
Specifications
| Paint Correction Metric | Universal Specification Details |
| Model SKU Part Number | 20V MAX* XR® Brushless 7" Rotary Polisher / DCM849B |
| Manufacturer Brand Line | DEWALT® Power Tools (Premium XR® Brushless Contractor Series) |
| System Voltage Platform | 20V MAX* (Universal Slide Battery Pack Interconnectivity) |
| Motor System Architecture | High-Efficiency Brushless Core (Delivers up to 75% More Runtime) |
| No-Load Operational Speed | Adjustable Range from 800 up to 2,200 RPM Continuous |
| Speed Interface System | Electronic Variable Preset Dial + Progressive Accelerator Trigger |
| Standard Backing Plate Size | 7-Inch (180 mm Standard Large-Area Velcro Buffing Pad Platform) |
| Spindle Thread Connection | Industrial Standard 5/8" - 11 TPI Spindle (Fits Universal Pads) |
| Battery Housing Layout | Sideways Lateral Rotated Orientation (Protects Paneled Surfaces) |
| Chassis Impact Shielding | Non-Marring Shock-Absorbing Rubber Gear Case Overmold |
| Auxiliary Grip Solutions | Includes Standard Straight Side Handle + Traditional Loop Handle |
| Operational Weight (Bare) | Lightweight 4.8 lbs Core Frame (Excludes External Battery Pack) |
Frequently Asked Questions
+ Is this DCM849B model a rotary polisher or a dual-action (DA) random orbit polisher?
+ Which battery model is recommended to optimize the runtime and balance of this buffer?
+ Why did DEWALT rotate the battery pack orientation sideways on this polisher frame?
+ Can I use standard aftermarket 7-inch hook-and-loop foam or wool buffing pads with this tool?
Product Specifications
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• DeWalt DCM849B Rotary Polisher Core: High-efficiency 7" cordless rotary polisher features a brushless motor for extended runtime, variable speed (800-2200 RPM) control, and a rubber gear case overmold. • 20V Max XR. • Tool Only. |
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✔️ Cordless Freedom: Professional-grade polishing performance without the restriction of cords; perfect for automotive, marine, and glass applications. ✔️ Precision Control: Variable-speed trigger and dial ensure optimal finish. |