Black+Decker BDEG400 (6.5 Amp 4-1/2 in. Corded Angle Grinder)

Black+Decker BDEG400 (6.5 Amp 4-1/2 in. Corded Angle Grinder)

By Black+Decker · Angle Grinders · Power Tools

  • Wheel 4-1/2 in
  • Motor 6 A
  • Size 12.5 x 5.2 x 4.6 in
  • Weight 4.5 lb
  • Warranty 2 years limited

Lowest price seen
~$45.99 (approx.)
from $45.99 at Amazon

Prices are snapshots. Check the current price with the store.

Summary

A budget corded angle grinder for homeowner grinding, cutting and rust removal, with a metal gear case and a 2-year warranty. Check the switch before you buy: multiple owners report it failing shortly after purchase.

Strengths

  • At 4.5 lb with a narrow body, it is among the lighter grinders in its class and less fatiguing in extended use.
  • The metal gear case feels more durable than the plastic housings on other budget grinders.
  • A 3-position side handle gives control from different angles, and the spindle lock makes wheel changes easier.
  • It ships with a grinding wheel, spanner wrench and guard, so the basic setup is complete.
  • The 2-year limited warranty covers defects in material and workmanship.

Weaknesses

  • Multiple owners report the paddle switch failing shortly after purchase.
  • There is no lock-on switch: the tool runs only while you hold the paddle, which gets tedious on long cuts.
  • No variable speed and no overload protection rule out delicate work and heavy sustained loads.
  • The guard swivels only about 270 degrees, and owners call its adjustment cumbersome.
  • Some units arrived without the spanner wrench or side handle.
  • It is not built for heavy-duty or professional use.

Verified specifications

ModelBDEG400 (internal designation G720).
Motor6.0 A per the manufacturer; many retailer listings say 6.5 A.
Wheel size4-1/2 in (114 mm).
No-load speed10,000 RPM.
Spindle thread5/8-11 UNC.
Spindle lockyes.
Side handle3-position.
Switchone-touch release paddle; no lock-on.
Variable speedno.
Overload protectionno.
Guardincluded, for Type 27 and 29 wheels.
Gear casemetal.
Bodynarrow.
CertificationsUL listed, CSA certified.
Weight4.5 lb.
Dimensions12.5 × 5.2 × 4.6 in.
Warranty2 Year Limited.
In the boxgrinder, metal grinding wheel, spanner wrench, wheel guard; no cutting wheel.
Full research notes and sources

What it’s for

The BDEG400 is Black+Decker’s entry-level corded grinder for homeowner and light-commercial work: grinding, cutting, sanding, wire brushing and surface preparation. The 6 A motor and 4-1/2 in wheel put it in the compact, lightweight class. One owner used it to strip rust from a wrought iron bench: “It worked perfectly. The 6.5 amp motor has plenty of power, the metal gear case feels solid, and the 3-position handle made it comfortable to use from different angles.”

Switch, vibration and guard

The strongest caution in owner feedback is the switch: multiple reviewers report it failing shortly after purchase. Nobody has published a failure rate, so treat this as a known annoyance rather than a defect. Some owners report intense vibration during extended use, and several call the guard adjustment cumbersome. The guard swivels about 270 degrees, not a full circle. A separate r/Tools thread about a grinder making a rattling sound suggests factory gearbox grease may be too thin, though that is not confirmed as a BDEG400 problem.

Wheels, parts and warranty

The box includes the grinder, a metal grinding wheel, a spanner wrench and a wheel guard; no cutting wheel ships from the factory. The guard fits Type 27 and 29 wheels. Replacement parts are sold under the G720 designation (G720-B3 Type 1) through Black+Decker’s ToolServiceNet service network, though exact US stock and pricing were not confirmed. The tool is factory-lubricated and the manual says to lubricate it regularly depending on usage. The warranty is two years limited against defects in material and workmanship; accessories are not covered and proof of purchase may be required.

Is it worth it?

Black+Decker’s own site and Walmart list the BDEG400 at $45.99, where the metal gear case, 3-position handle, spindle lock and 2-year warranty make it a reasonable budget choice for occasional DIY work. Acme Tools has it at $48.99 (out of stock, backorder only), which is still fair value. At $59.37 from ToolUp or $63.04 from RSHughes, alternatives from Makita, DeWalt and Ryobi become preferable. The tool is no longer sold at Lowes or Northern Tool, which may affect long-term parts and warranty support. If you need a lock-on switch, variable speed or overload protection, look elsewhere.

Which model this is

This page covers the Black+Decker BDEG400, a corded 4-1/2 in angle grinder for the US 120 V market. The same tool is designated G720 (G720-B3 Type 1) for parts and industrial-supply purposes, so confirm the model number before ordering parts. The US Amazon listing is ASIN B00RZV20CS.

Sources

Manufacturer:

Independent reviews:

Owner reports:

Retailers and parts:

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