DEWALT DW400 4-1/2-Inch Small Angle Grinder

by DEWALT

Product Description

From the Manufacturer

DEWALT DW400 4-1/2-Inch 5 Amp 10,000 RPM Small Angle Grinder

From the Manufacturer

This 4-1/2-inch grinder is powerful yet versatile enough for the most demanding of grinding and sharpening jobs. In addition, the DW400 is ideal for jobs where removing rust can be done with the optional wire cup brush or wire wheel. The optional diamond blade and guard will get you through any mild concrete repair jobs. The DW400's AC/DC compatibility allows users to power the tool from welders and generators as well as conventional AC outlets. Includes depressed center wheel, wrench, backing flange, clamp nut, and guard.

Features

• 5 amp, 10,000 rpm motor provides power and speed for 4-1/2-inch grinding applications
• AC-only switch runs off 120-volt power
• 2-position removable side handle for greater comfort and control
• Spindle lock for quick and easy wheel changes
• 5/8-inch-11 spindle thread accepts a wide range of 4-1/2-inch accessories

Specifications

• Amps: 5 amps
• Max. watts out: 650 watts
• No-load speed: 10,000 rpm
• Use wheels rpm above: 11,000 rpm
• Spindle lock: yes
• Spindle thread: 5/8 inch-11
• Tool length: 10.25 inches
• Tool weight: 4.5 lbs.

Includes

• Depressed center wheel
• Wrench
• Backing flange
• Clamp nut
• Guard
• 2-position side handle

Warranty
This DeWalt high-performance industrial tool comes with a warranty package that includes:
30-day, no-risk satisfaction guarantee
One-year free service contract
One-year warranty

Product Details

• Product Dimensions: 14 x 5.6 x 4.9 inches ; 5.3 pounds
• Shipping Weight: 5.3 pounds
• Shipping: This item is also available for shipping to select countries outside the U.S.
• ASIN: B00004RH7C
• California residents: Click here for Proposition 65 warning.
• Item model number: DW400
• Average Customer Review: 3.2 out of 5 stars  See all reviews (4 customer reviews)
• Amazon Best Sellers Rank: #171,830 in Home Improvement (See Top 100 in Home Improvement)

Customer Reviews

Most Helpful Customer Reviews

8 of 8 people found the following review helpful:

4.0 out of 5 stars Carpenters, plumbers, ceramic tile installers lend me your ears!, March 1, 2006

By 

Caslo Cranston (New Orleans, LA USA) - See all my reviews

This review is from: DEWALT DW400 4-1/2-Inch Small Angle Grinder (Tools & Home Improvement)

On a whim I purchased a DW-400 as a cut-off tool and soon discovered that the "small angle grinder" is possibly one of the great tools that most people have never heard of. My dewalt lasted about a year (at the time it was the least expensive 4.5" grinder on the market)- but in that time I learned many wonderous things. My money was well spent.

Grinding - How useful is a portable grinder?

Bad marketing - perhaps better to say - rotary, precision cutting tool.

It's not about different manufacturers or models, although the tool will have greater longevity if the bearings are held in metal as opposed to plastic (used in this model) - It's about the specialty disks and blades available for 4' and 4.5 " "grinders/rotary, precision cutting tools." The 4.5" units can also hold the 4" discs. (Useful when cutting the hole for the toilet flange in ceramic tile.)

Carpenters: You pull off a board that was nailed from the other side - casing nails - pull 'em through, commons? Cut them off with a 4-4.5 cut-off disk. Joist removal - nails sticking out - cut them off.

Plumbers: Cutting up to 3/4" galvanized water pipe or black gas - 4 times faster than sawzall (reciprocating saw.} Hey jackass make sure that there is no water or gas in pipes before you start cutting.

You might say - "My reciprocating saw does the job well enough." So what do you do when you have to cut cast iron or terra-cotta? Well if you had an angle grinder you would use an abrasive cut-off disk to cut the cast iron or a diamond wheel to precisely cut the terra-cotta. My Ridgid chain cutter never see's the light of day anymore.

Reciprocating saws need to have the subject material held firmly in place - cutting with small angle grinders/rotary precision cutting tools also have a potential problem with binding. When a reciprocating saw binds - inadequately clamped material moves back and forth with the blade, When the angle grinder binds the fiber cutting discs usually break and may fly away in small pieces. For this reason it is a necessity to wear eye protection and gloves.

Ceramic Tile Installers: With the diamond wheel you can cut a toilet flange or sculpt to moldings like an artist.

So what's wrong with the DW- 400 that I only ranked it 4 of 5 stars.

Head bearing failed and was more expensive to repair than to replace.

I went out and purchased the ryobi 4" angle grinder $29.00 at home depot. I had realized that they are cheap enough to throw away when they break- but while they work you will find endless ways to make rotary, precision cutting tools re-define the way that you work.

Caslo

12 of 16 people found the following review helpful:

3.0 out of 5 stars DW400 review, August 20, 2000

By 

William Schiller (Florence, MT USA) - See all my reviews

This review is from: DEWALT DW400 4-1/2-Inch Small Angle Grinder (Tools & Home Improvement)

I purchased my DW400 over a year ago and love it. It has enough power to handle the larger jobs that I wouldn't even consider trying with my old grinder. I have had no problems with it after lots of use and more than a little abuse.

5 of 8 people found the following review helpful:

1.0 out of 5 stars PASS ON THIS ONE, October 30, 2003

By A Customer

This review is from: DEWALT DW400 4-1/2-Inch Small Angle Grinder (Tools & Home Improvement)

When my old Makita finally quit, I needed a replacement in a hurry and the only grinder my local small hardware store had was the DeWalt DW-400. It was on sale so I bit. After less than an hour of use, it just stopped working. A quick trip back to the store and I had a replacement. Incredibly, after about 1/2 hour of use this one died too. The problem seems to be the switch as the grinder would stop, not during grinding, but after turning the grinder off, then sliding the switch to restart. I should add that even when it did work I was disappointed in the performance. Although the power was fine, the level of vibration was MUCH higher than the Makita. Although I don't baby my tools, I'm not abusive either. Neither of the grinders was dropped, damaged or used in any unusual way. I should mention that the Makita I was replacing had lasted over ten years of hard use! Spend a little more and get a Makita or Bosch. I've owned several tools of each of these brands and always gotten great performance and durability.