Milwaukee 2939-20 M18 FUEL™ 1/4-Inch Cordless Braking Die Grinder – Slide Switch – RAPID STOP™ Safety Brake – Tool Only

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SKU:
MIL2939-20
UPC:
045242755936
MPN:
2939-20
Availability:
Ready to ship
Weight:
3.0000 LBS
On Sale
  • Milwaukee 2939-20 M18 FUEL braking die grinder with slide switch tool only side profile.
  • Milwaukee 2939-20 M18 FUEL braking die grinder with slide switch in use for metal grinding and surface preparation.
  • Close-up of Milwaukee 2939-20 M18 FUEL braking die grinder RAPIDSTOP brake and slide switch controls.
  • Milwaukee 2939-20 M18 FUEL slide switch braking die grinder being used in metal fabrication application.
MSRP: $378.00
Now: $278.00
Was: $378.00
— You save $100.00
  • ✔️ Spindle Lock: Fast, one-wrench accessory changes. ✔️ M18 FUEL™ Power: Outperforms corded die grinders. ✔️ Versatile Fit: Compatible with all 1/4" shank accessories. ✔️ M18 FUEL™ Bare Tool.
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Description

Milwaukee 2939-20 M18 Braking Die Grinder with Slide Switch

Corded Performance. Industrial Safety. Total Mobility.

The Milwaukee 2939-20 M18 FUEL™ Braking Die Grinder with Slide Switch delivers the power of a corded grinder while providing the freedom and safety features required for modern industrial jobsites. Driven by the POWERSTATE™ Brushless Motor, this die grinder generates a massive 20,000 RPM, allowing it to outperform 11-amp corded models. Whether you are deburring heavy pipe, cleaning welds, or porting metal, this tool provides the torque and speed necessary for the most demanding applications.

Safety is at the core of the 2939-20. It features RAPID STOP™ technology, which stops all 1/4-inch accessories in under 2 seconds, significantly reducing the risk of injury or damage to the workpiece. The lock-on slide switch is designed for comfort during extended use, while the universal 1/4-inch collet ensures compatibility with all standard burrs and stones. Part of the M18™ system, it offers the ultimate combination of performance, safety, and durability.

Why the Milwaukee M18 FUEL™ Braking Die Grinder is an Industrial Essential:

  • Corded Power Performance: Outperforms 11-amp corded grinders, providing the high speed needed for rapid material removal.
  • RAPID STOP™ Brake: Enhances user safety by stopping the accessory in less than 2 seconds after the switch is turned off.
  • Slide Switch with Lock-On: Optimized for ergonomics and reduced hand fatigue during long, continuous grinding sessions.
  • POWERSTATE™ Brushless Motor: Designed for the professional, providing longer motor life and consistent power under heavy load.
  • REDLINK PLUS™ Intelligence: The most advanced electronic system in its class, protecting the tool from overload and overheating.

Specifications

Feature Specification
Voltage 18V (M18™ System)
Motor Type POWERSTATE™ Brushless
Collet Size 1/4 Inch
Maximum RPM 20,000 RPM
Switch Type Slide Switch (Lock-On)
Braking System RAPID STOP™ (Under 2 Seconds)
Weight 3.5 lbs (Bare Tool)
Length 15.1 Inches

Frequently Asked Questions

+ Does this tool come with a battery and charger?
No. The 2939-20 is the "Tool Only" (Bare Tool) version. It is compatible with all Milwaukee M18™ REDLITHIUM™ batteries.
+ What is the advantage of the Slide Switch?
The lock-on slide switch is ideal for large-scale projects where you are grinding for several minutes at a time. It eliminates the need to hold down a trigger, reducing hand cramps and improving grip control.
+ Which battery is recommended for heavy grinding?
For industrial applications, we highly recommend the M18™ REDLITHIUM™ HIGH OUTPUT™ XC6.0 or XC8.0 battery. These packs provide the sustained current needed to maximize the 20,000 RPM speed under heavy load.
+ Does the braking system wear out the tool?
No. The RAPID STOP™ system is electronically controlled through the brushless motor, meaning there are no mechanical brake pads to wear down or replace over time.
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Product Specifications

category_bullets:
• RAPIDSTOP™ Brake: Stops most accessories in under 2 seconds. • High Performance: 27,000 RPM motor for fast material removal. • Weld Removal: Clears up to 12" of weld bead per charge (5.0Ah). • Slide Switch.
selling_points:
✔️ Spindle Lock: Fast, one-wrench accessory changes. ✔️ M18 FUEL™ Power: Outperforms corded die grinders. ✔️ Versatile Fit: Compatible with all 1/4" shank accessories. ✔️ M18 FUEL™ Bare Tool.
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