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DEWALT Angle Grinder Tool

By DEWALT · Angle Grinders · Power Tools · More from DEWALT

  • 11 amp AC/DC motor
  • 11,000 RPM no-load speed
  • 4-1/2 in wheel diameter
  • 5/8-11 spindle thread
  • Paddle switch with safety lock-off

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Summary

A compact corded 4-1/2 inch grinder with an 11 amp brushed AC/DC motor , 11,000 RPM no-load speed, paddle switch with safety lock-off and lock-on, tool-free wheel changes, a One-Touch 360-degree guard and a 3-year limited warranty. Check the missing safety hardware before you buy: there is no wheel brake and no kickback clutch.

Strengths

  • Paddle switch stops the wheel when you let go, with a lock-on button for extended passes.
  • Tool-free Quick-Change wheel release and a One-Touch guard that rotates 360 degrees.
  • Dust Ejection System and auto-off brushes credited with longevity; units with over two years of daily shop use still running.
  • Explosion-diagram manual and a DEWALT service-center network support field service.
  • 3-year limited warranty, 1 year free service and 90 days money-back.

Weaknesses

  • No wheel brake and no kickback clutch; the Canadian spec table confirms the absence.
  • One-Touch guard can be oversized for some discs and tight-area work.
  • Paddle lock can stick when dirty, and some users report difficulty operating the paddle with gloves.
  • Weight and corded operation: 4.6 lb is mid-class, and there is no cordless flexibility.
  • Brushed 11 amp motor; brushless brake-equipped rivals exist if the budget allows.
  • No instrumented test of torque, RPM under load, vibration or noise exists for this model.

Verified specifications

ModelDWE402 bare tool (UPC 885911355810). ASIN B00U24VG0W corresponds to the DWE402K kit, which adds a depressed center wheel and a kit box (UPC 885911355889).
Region/electrical120 V AC, AC/DC motor.
Motor11 amp AC/DC, brushed; no brushless variant of this model.
No-load speed11,000 RPM.
Max output1,400 W; 1.8 HP per retailer spec sheets.
Wheel diameter4-1/2 in. (115 mm), Type 27 guard.
Spindle thread5/8"-11.
Switchpaddle with safety lock-off plus lock-on button. A DWE402N no-lock-on version exists, and a DWE402W adds a grinding wheel.
Brake / kickback protectionnone. DEWALT’s Canadian spec table lists Brake: No, Kickback Brake: No, E-Clutch: No.
Dust Ejection Systemyes.
Quick-Changetool-free wheel release.
One-Touch guard360-degree rotation without a wrench.
Auto-off brushesyes, the tool shuts down when the brushes need replacing.
Length12 in.
Cord6 ft per Dillon Supply and Ohio Power Tool; 6.3 ft per Imperial Supplies.
Housingplastic with a low-profile gear case.
Included with the bare tool4-1/2 in. One-Touch (T27) guard, wrench and a 2-position side handle.
Country of originconflicting retailer data, India, USA, or IMPORT. Unresolved.
Warranty3 Year Limited Warranty, 1 Year Free Service, 90 Days Satisfaction Guaranteed.
Full research notes and sources

Which model this is

This page covers the DWE402 bare tool, corded, 11 amp, 4-1/2 in. The manual covers a family, so check the switch before buying: DWE402W adds a grinding wheel, DWE402K is the kit with a depressed center wheel and kit box, and DWE402N is the no-lock-on version with the same motor and gear case. Do not merge the older 10-amp D28402, the 7-amp slide-switch DWE4011, or the newer brushless DWE4214 / DWE43114 / DWE43144 family into this model’s evidence base. ASIN B00U24VG0W is the K kit. Older retailer copy may claim an electrical brake, but DEWALT’s own spec table says no.

Power and switch

DEWALT’s current copy claims oversized brushes give 2X the brush life of the D28402; Lowe’s DWE402N page phrases the same claim as 65% longer brush life. That is marketing copy, not an independent measurement. The lock-on button keeps the tool running without holding the paddle, which is a real safety-relevant behavior, and the lock-off lever must be pushed back before the paddle works; the manual warns never to disable it, and notes that a locked-on switch can restart the tool after a power interruption. Owners who run 7 amp and 11 amp grinders back to back notice the difference in productivity, and forum owners repeatedly recommend the paddle over the slide switch because the tool stops when you let go.

Safety and guards

grinder with kickback control, an electric brake and restart protection, and says buyers who do not need electronic safety features can skip the brushless motor and save money. The missing brake is the substantive caution against this model: shop users on gloves, kickback risk on bind, and confined cuts all push toward a brake-equipped machine. For lower-risk shop grinding and cutting, the paddle-with-lock-off behavior plus the 11 amp motor is the trade.

Independent testing

No instrumented exact-model test was found; RTINGS, Wirecutter, Tom’s Guide, CNET and PCMag publish no angle grinder coverage at all. plate without bogging or overheating, Quick-Change wheel release, One-Touch guard, Dust Ejection System, auto-off brushes and the 2X brush life claim. Its cons are guard too big for some discs, no brake stop feature, paddle lock that can stick when dirty, and 6.2 lb weight. Both are qualitative, not laboratory instrumented, so treat them as structured hands-on opinion.

Owner feedback

Owner and forum sentiment is moderate and consistent. Praise centers on power for the size, tool-free wheel changes and the paddle switch. Cautions center on the lack of a wheel brake or kickback protection, a guard that interferes with some discs, a paddle lock that can stick when dirty, weight, glove use and corded mobility. Dust Ejection System and auto-off brushes are credited with longevity. No defect-rate data exists, so these are recurring signals rather than prevalence estimates.

Maintenance and warranty

Maintenance per the manual: blow dust out of all air vents with clean dry air at least weekly, never use solvents on plastic parts, use water and mild soap only, do not immerse. Brushes are user-replaceable on this class of tool, with an exploded diagram for field service. If the gear case and motor housing separate by more than 1/8 in., the tool must be serviced and re-assembled by a DEWALT service center or brush, motor or bearing failure may result. Warranty is 3 years limited, 1 year free service, 90 days satisfaction guaranteed, stated identically on the official page, the manual and retailer spec pages, and does not cover normal-wear parts or abuse.

Is it worth it?

At the low retail prices observed, the DWE402 is an easy recommendation for a first or backup corded grinder. Fresh October 2026 listings include Home Depot at $89.00, Farm & Home Supply at $99.99, Acme Tools at $110.99 on a flash sale, Stone Tooling at $115.00, Kaufman Company at $116.70, Ohio Power Tool at $117.19, Northern Tool at $129.99, MSC Direct at $140.70 and ToolSource at $144.81 for the bare tool; Home Depot also lists the DWE402N at $97.90 and the DWE402W at $119.00, and the DWE402K kit is $136.11 at Toolup. A third-party listing showed $130.99 on 2026-10-02.

Value thresholds from the evidence: strong at 100 dollars or less, good from 101 to 120 dollars, fair from 121 to 135 dollars when compared with brake-equipped brushless corded options, and weak above 135 dollars where cordless brake-equipped alternatives compete.

Sources

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