DEWALT 20V MAX XR Cordless Rotary Polisher DCM849B 7-Inch Variable Speed Brushless Motor Bare Tool
DEWALT 20V MAX XR Cordless Rotary Polisher DCM849B 7-Inch Variable Speed Brushless Motor Bare Tool
DEWALT 20V MAX XR Cordless Rotary Polisher 7-Inch Variable Speed Brushless Motor Bare Tool
DEWALT 20V MAX XR Cordless Rotary Polisher 7-Inch Variable Speed Brushless Motor Bare Tool
DEWALT 20V MAX XR Cordless 7-Inch Rotary Polisher with Variable Speed and Brushless Motor Bare Tool
Features diagram of the DEWALT DCM849B 20V MAX XR cordless rotary polisher highlighting the brushless motor, variable-speed dial, rubber gear case overmold, and sideways battery pack.
Close-up view of the integrated variable-speed dial on the DEWALT 7-inch rotary polisher showing speed settings up to 2200 RPM for precise automotive detailing control.
Detailed view of the sideways battery pack orientation on the DEWALT brushless polisher designed to help prevent surface scratching while working on vehicle panels.
Informational graphic with a yellow strike-through circle indicating that the 20V battery and charger are sold separately for this bare tool listing.
DEWALT® Extreme Locations: Jupiter's Story (:15) promotional video
DEWALT 20V MAX XR Cordless Rotary Polisher DCM849B 7-Inch Variable Speed Brushless Motor Bare Tool
DEWALT 20V MAX XR Cordless Rotary Polisher DCM849B 7-Inch Variable Speed Brushless Motor Bare Tool
DEWALT 20V MAX XR Cordless Rotary Polisher 7-Inch Variable Speed Brushless Motor Bare Tool
DEWALT 20V MAX XR Cordless Rotary Polisher 7-Inch Variable Speed Brushless Motor Bare Tool
DEWALT 20V MAX XR Cordless 7-Inch Rotary Polisher with Variable Speed and Brushless Motor Bare Tool
Features diagram of the DEWALT DCM849B 20V MAX XR cordless rotary polisher highlighting the brushless motor, variable-speed dial, rubber gear case overmold, and sideways battery pack.
Close-up view of the integrated variable-speed dial on the DEWALT 7-inch rotary polisher showing speed settings up to 2200 RPM for precise automotive detailing control.
Detailed view of the sideways battery pack orientation on the DEWALT brushless polisher designed to help prevent surface scratching while working on vehicle panels.
Informational graphic with a yellow strike-through circle indicating that the 20V battery and charger are sold separately for this bare tool listing.
DEWALT® Extreme Locations: Jupiter's Story (:15) promotional video
DEWALT

DeWalt Rotary Polisher DCM849B 7 Inch Bare Tool (20V MAX XR Brushless 800-2200 RPM Variable Speed Auto Marine Paint Gelcoat Detailing)

Only 1 left
SKU: DCM849B
$329.00 USD

Description

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DeWalt DCM849B 20V MAX XR 7-Inch Variable-Speed Cordless Rotary Polisher Bare Tool

The DeWalt DCM849B 20V MAX XR 7-Inch Variable-Speed Cordless Rotary Polisher is a professional surface finishing power tool engineered for automotive paint correction, gelcoat oxidation removal, and fiberglass polishing. Powered by a high-efficiency brushless motor, this 4.8-pound bare tool drives a 7-inch backing plate with a 5/8-inch-11 spindle thread across a 800 to 2,200 RPM speed range controlled via variable speed trigger and speed dial. **Battery and charger sold separately.** Featuring a protective rubber gear case overmold to guard delicate finishes against accidental contact, this cordless rotary polisher solves cord-drag scratches, surface swirl marks, and operator fatigue challenges across marine and auto detailing applications.

Best Used For:

  • Automotive Clear Coat Paint Correction: Removing deep scratches, sanding marks, and swirl flaws from clear coat automotive paints using wool or foam compounding pads.
  • Marine Gelcoat & Fiberglass Restoration: Buffing oxidized fiberglass, hull gelcoats, and marine brightwork on boats and personal watercraft without trailing extension cords.
  • Specialty Glass & Metal Polishing: Restoring clarity to acrylic lenses, glass windshields, stainless steel trim, and aluminum brightwork.

Key Performance & Safety Features

  • High-Efficiency XR Brushless Motor: Delivers maximum power output, cooler operating temperatures, and extended runtime on 20V MAX battery platforms.
  • 800-2,200 RPM Dual-Control Speed Adjustment: Variable speed trigger and thumb control dial allow precise RPM matching to specific compounding and finishing steps.
  • Rubber Gear Case Overmold: Protective rubber housing buffers non-slip grip zones and prevents marring on automotive paint finishes during tight-angle passes.
  • Dual Ergonomic Handle Configurations: Includes both an adjustable side handle and a top bail handle to optimize operator leverage across flat and vertical panels.
  • Standard 5/8-Inch - 11 Spindle Thread: Mates securely with standard 7-inch hook-and-loop backing plates, polishing bonnets, and compounding pads.

What's Included

  • (1) DeWalt DCM849 20V MAX XR 7-Inch Cordless Rotary Polisher
  • (1) 7 in. Hook-and-Loop Backing Plate
  • (1) Auxiliary Side Handle
  • (1) Top Position Bail Handle

Technical Specifications

Manufacturer Brand DeWalt
Model Number / Part ID DCM849B (Bare Tool)
Voltage System Rating 20V MAX* DC
Motor Drive System Brushless Electric Motor
No-Load Speed Range 800 - 2,200 RPM
Backing Plate / Disc Diameter 7.0 in. (180.0 mm)
Output Spindle Thread Size 5/8 in. - 11 UNC
Switch & Speed Control Architecture Variable Speed Trigger with Speed Dial Limit Control
Overall Tool Chassis Length 17.1 in. (434.34 mm)
Bare Tool Net Weight 4.8 lbs (2.18 kg)
Primary Tool Application Automotive Paint Correction, Marine Gelcoat Buffing
Pro-Tip: Keep the rotary pad flat against the vehicle panel and spread heavy compounding paste at 800 RPM before dialing speed up to 1,800 RPM to avoid sling and prevent localized paint burn-through.