A studio profile view of the DEWALT DW840 7-inch medium angle grinder. The corded tool features a signature yellow motor housing, a durable silver metallic gear case, and a black adjustable safety guard designed for heavy-duty metal grinding and cutting applications.
A perspective view of the DEWALT 7-inch angle grinder with a 1/4-inch thick grinding wheel installed. This angle showcases the ergonomic rear handle, the textured removable side handle for two-handed control, and the heavy-duty AC/DC power cord for jobsite versatility.
A right-side studio profile of the DEWALT DW840 corded grinder. The image emphasizes the balanced, slim body design and the easy-access trigger switch, highlighting the tool's 13-amp motor capacity for professional material removal.
An annotated product diagram of the DEWALT 7-inch medium angle grinder. Labeled callouts highlight key technical features including the external brush caps for easy servicing, the high-torque 13-amp motor, and the keyless adjustable guard for rapid safety adjustments.
A marketing kit layout for the DEWALT DW840. Text at the top confirms the package includes the 7-inch grinder, a grinding wheel, a Type 27 safety guard, a side handle, a hex key, and the inner and outer flanges.
A product view of the DEWALT medium angle grinder with a high-contrast text overlay at the bottom stating ADDED COMFORT WITH REAR HANDLE DESIGN. This highlights the tool's ergonomic engineering for reduced user fatigue during extended grinding sessions.
A studio view of the 7-inch corded grinder with a marketing text overlay stating EFFICIENT USE WITH HIGH POWER-TO-WEIGHT RATIO. This emphasizes the tool's ability to provide 2,250 Unit Watts Out while remaining manageable for precision metalwork.
A detailed close-up shot of the gear head and guard on the DEWALT angle grinder. A large yellow text overlay prominently displays 8,500 RPM, signifying the high-speed performance capabilities for fast metal finishing and cutting.
An action lifestyle shot of a professional welder using the DEWALT DW840 angle grinder. Sparks are shown flying as the 13-amp motor powers through a metal surface, demonstrating the tool's high-torque performance in an industrial setting.
A wide lifestyle shot of a tradesman in protective gear using the DEWALT 7-inch angle grinder to smooth the edges of a large industrial steel pipe. The image illustrates the tool's stability and power when used for heavy-duty metal fabrication and pipe fitting.
A wide action lifestyle shot of a professional welder using the DEWALT DW840 7-inch angle grinder to prep the surface of a large industrial steel cylinder. The 13-amp corded motor provides high-torque power for heavy-duty metal fabrication while the adjustable guard redirects sparks safely away from the operator.
DEWALT® Product Guides - Grinder Basics promotional how to video
A studio profile view of the DEWALT DW840 7-inch medium angle grinder. The corded tool features a signature yellow motor housing, a durable silver metallic gear case, and a black adjustable safety guard designed for heavy-duty metal grinding and cutting applications.
A perspective view of the DEWALT 7-inch angle grinder with a 1/4-inch thick grinding wheel installed. This angle showcases the ergonomic rear handle, the textured removable side handle for two-handed control, and the heavy-duty AC/DC power cord for jobsite versatility.
A right-side studio profile of the DEWALT DW840 corded grinder. The image emphasizes the balanced, slim body design and the easy-access trigger switch, highlighting the tool's 13-amp motor capacity for professional material removal.
An annotated product diagram of the DEWALT 7-inch medium angle grinder. Labeled callouts highlight key technical features including the external brush caps for easy servicing, the high-torque 13-amp motor, and the keyless adjustable guard for rapid safety adjustments.
A marketing kit layout for the DEWALT DW840. Text at the top confirms the package includes the 7-inch grinder, a grinding wheel, a Type 27 safety guard, a side handle, a hex key, and the inner and outer flanges.
A product view of the DEWALT medium angle grinder with a high-contrast text overlay at the bottom stating ADDED COMFORT WITH REAR HANDLE DESIGN. This highlights the tool's ergonomic engineering for reduced user fatigue during extended grinding sessions.
A studio view of the 7-inch corded grinder with a marketing text overlay stating EFFICIENT USE WITH HIGH POWER-TO-WEIGHT RATIO. This emphasizes the tool's ability to provide 2,250 Unit Watts Out while remaining manageable for precision metalwork.
A detailed close-up shot of the gear head and guard on the DEWALT angle grinder. A large yellow text overlay prominently displays 8,500 RPM, signifying the high-speed performance capabilities for fast metal finishing and cutting.
An action lifestyle shot of a professional welder using the DEWALT DW840 angle grinder. Sparks are shown flying as the 13-amp motor powers through a metal surface, demonstrating the tool's high-torque performance in an industrial setting.
A wide lifestyle shot of a tradesman in protective gear using the DEWALT 7-inch angle grinder to smooth the edges of a large industrial steel pipe. The image illustrates the tool's stability and power when used for heavy-duty metal fabrication and pipe fitting.
A wide action lifestyle shot of a professional welder using the DEWALT DW840 7-inch angle grinder to prep the surface of a large industrial steel cylinder. The 13-amp corded motor provides high-torque power for heavy-duty metal fabrication while the adjustable guard redirects sparks safely away from the operator.
DEWALT® Product Guides - Grinder Basics promotional how to video
DEWALT

DEWALT Angle Grinder DW840 7 Inch Corded Tool (13A Motor 8000 RPM 2250 UWO AC DC Compatible Structural Steel Metal Fabrication Welds Cutting OEM)

In stock
SKU: DW840
$143.99 USD
$169.99 USD Sale $143.99 USD

Description

Authorized Dealer Badge DEWALT logout

DEWALT DW840 7-Inch 13-Amp 8,000 RPM Heavy-Duty Angle Grinder

The DEWALT DW840 7-inch heavy-duty corded angle grinder provides high-output material removal and deep bevel cutting powered by an industrial 13.0-amp motor delivering 2,250 unit watts out (UWO). Operating at a steady 8,000 RPM with integrated AC/DC power compatibility, this industrial metalworking tool runs seamlessly from standard 120V wall outlets, jobsite generators, or engine-driven mobile welding rigs. Outfitted with a tool-free adjustable Type 27 safety guard, a convenient spindle lock button, and a dual-position side handle, it optimizes operator control during continuous structural steel grinding, heavy weld leveling, and thick metal cutoff tasks.

Best Used For:

  • Structural Steel Fabrication: Beveling thick steel plates, beveling structural I-beams, and rapidly flattening heavy multi-pass weld seams.
  • Remote Jobsite Metalworking: Powering cutting and surface prep operations directly from DC generator welder outlets on pipelines and remote bridge structures.
  • Industrial Demolition and Cutting: Slicing through thick-wall steel pipe, heavy structural rebar cages, and industrial iron framing without thermal bogging.

Key Performance & Safety Features

  • High-Output 13-Amp Motor: Produces 2,250 max watts out to sustain rapid stock removal and prevent motor stalling under excessive tool pressure.
  • AC/DC Power Versatility: Operates efficiently across both alternating and direct current power sources for field flexibility on welder generators.
  • 8,000 RPM Operating Velocity: Delivers high peripheral wheel speeds for clean stock removal and reduced grinding cycle times.
  • Tool-Free Type 27 Wheel Guard: Enables rapid repositioning of the steel safety shield without wrenches to direct abrasive sparks away from the user.
  • Integrated Spindle Lock System: Features a top-mounted spindle lock button for swift, single-wrench abrasive wheel changeouts.
  • Ergonomic Two-Position Side Handle: Reversible auxiliary grip balances tool weight and provides customized leverage for left- or right-handed operators.

What's Included

  • (1) DEWALT DW840 7-Inch Heavy-Duty Angle Grinder
  • (1) 7-Inch Bonded Grinding Wheel
  • (1) 7-Inch Type 27 Adjustable Safety Guard
  • (1) Two-Position Auxiliary Side Handle
  • (1) Flange Lock Hex Key
  • (1) Inner and Outer Wheel Flange Set

Technical Specifications

Manufacturer DEWALT Industrial Tool Co.
Model Number DW840
Motor Amperage Rating 13.0 A
Maximum Power Output 2,250 Unit Watts Out (UWO)
No-Load Velocity (RPM) 8,000 RPM
Wheel Capacity Diameter 7.0 inches (177.8 mm)
Spindle Arbor Thread Size 5/8" - 11 UNC
Power Compatibility 120V AC / DC Power Compatible
Spindle Lock Mechanism Yes (Push-Button Lock)
Overall Dimensions (L x W x H) 21.6 in x 9.1 in x 4.2 in (548.6 mm x 231.1 mm x 106.7 mm)
Total Assembled Weight 12.05 lbs (5.47 kg)
UPC / Barcode Identification 028875084000

Pro-Tip: When running off engine-driven welder generators in the field, confirm your auxiliary power receptacle is rated for at least 15 amps continuous to ensure full 2,250 UWO torque output without tripping circuit breakers.