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Model #HD-AWD40

Store SKU #140029

4 in. Double Row Diamond Cup Wheel

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  • Works for wet and dry applications
  • Delivers 15,000 RPM
  • Ideal for leveling, removing coating and grinding concrete
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$4497
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Product Overview

RIDGID Double Row Diamond Cup Wheels are engineered with top-grade industrial diamond for maximum cutting performance and superior grinding life. These cup wheels can be used for a wide range of projects from shaping and polishing of concrete surfaces and floors, to fast aggressive concrete grinding or leveling and coating removal. Heavy-duty steel core offers lasting durability. 4 in. cup wheel will fit a variety of small angle grinders with a 5/8-11 threaded arbor. Suitable for both dry or wet cutting conditions.
  • Professional-grade quality
  • Engineered for dry or wet concrete grinding, leveling, or coating removal
  • Double row segment design is formulated with high-grade diamond and unique bond matrix for fast and aggressive grinding
  • For use on 4 in. or 4.5 in. angle grinders
  • 5/8 in. - 11 mm threaded arbor
  • MAX RPM 15,000
  • Faster grinding and longer life than standard abrasive grinding wheels
  • California residents

Info & Guides

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Specifications

Dimensions

Product Depth (in.)
1.125

Details

Abrasive Material
Diamond
Application
General Purpose
Arbor Size
5/8 in. - 11MM Threaded Arbor
Arbor Size (in.)
5/8"
Ideally Used With
Angle Grinders
Kit
No
Maximum RPM
15000 RPM
Number of Segments
16
Package Quantity
1
Power Tool Accessory Type
Sanding/Grinding/Polishing Accessory
Returnable
90-Day
Sanding, Grinding and Polishing Accessory Type
Grinding/Cut-Off Wheels
Tools Product Type
Power Tool
Wheel Diameter (in.)
4"

Questions & Answers

50Questions36Answers

Will this fit the Ridgid Cordless 4-1/2 in. Angle Grinder?

Asked by Mike July 5, 2021
1
Answer

It should work just fine. Be sure to wear eye and hand protection for safety.

Is this unit suitable for painted cement floors. I used it on a painted floor and it gummed up s...

Asked by bernie May 24, 2021
1
Answer

It's a tricky thing that you are doing. If the surface has a think or sticky coating, it will certainly hinder the cutting tool. There are two ways to deal with this that are basically two versions of the same solution ... use solvent to clean the tool repeatedly so that the cutting edges are always clear or clean the floor before you start so the gooey materials are minimized. The first method might be easier, but there's just no way around it.

What are the tradeoffs between this (HD-AWD40) and the RIDGID 4.5 in. Turbo Cup Wheel (HD-TAW45P1)?

Asked by Kevin December 3, 2020
2
Answers

Great for grinding down leftover mortar from the subfloor after tile removal! Pair this with the kit to lookup to your shop vac for a dustless removal!!

WILL THIS WORK ON A MIKITA 4"MODEL N9514B GRINDER ?

Asked by BOB March 24, 2020
4
Answers

Not sure, I have 4.5” for that reason.

Whats the best grinding wheel to remove old plaster and paint from a basement wall without damaging the blocks?

Asked by Bud September 25, 2019
1
Answer

Plaster and paint will find a way to infiltrate the pores of the concrete blocks and no amount of grinding will get it out. Your best course of action here is to use a chemical peal in combination with heat to remove the surface material. A sanding wheel can then be used to smooth the surface in preparation for new coatings.

After threading on the cup wheel there is not enough thread for the flange nut. Can I use it with...

Asked by chase August 24, 2019
2
Answers

I am able to use this wheel without the flange nut, my grinder turns in the direction that tightens the wheel to the arbor.

Can this be used to grind down ceramic tile for scaring to be able to lay stacked stone over the existing tile?

Asked by Mark July 8, 2019
7
Answers

Yes.

About how long would it take to grind old paint off 300sqft to prep for epoxy using just a hand g...

Asked by Doug99 June 9, 2019
5
Answers

Probably 2 or 3 days. It's not just the grinding, it's the dust control and clean up. If you use this on concrete you will create a lot of dust. Make certain you wear goggles and respiratory protection. I blew the dust out the back door with a fan, covered everything, and it took me a while to clean up the dust that got under the plastic sheeting. I took about 3 hours to grind down a 3 x 6 area of mastic to prep for tile laying.

Would this wheel work in grinding down a concrete countertop?

Asked by Michael May 10, 2019
8
Answers

It's for grinding concrete; should work fine on concrete countertop.

Can i use this to grind a 4 inch hole to insert/install a 4 inch recessed outlet box?

Asked by joe April 8, 2019
5
Answers

I would not recommend it with this tool.

4 in. Double Row Diamond Cup Wheel - page 2

Customer Reviews

  • 4.8
    out of 334 reviews
  • 95% recommend this product
Filter by:
Showing 1-10 of 334 reviews
This thing is amazing!
I am re-tiling my pool. I really, REALLY didn't want to spend the money on this, but I won't miss one cent of it. I spent half an hour doing about 20 feet of my water line (6 inches wide) with a conventional grinding wheel before I broke down and bought this. In the last ten minutes, I've done approximately 45 feet of water line with the new wheel! It is an absolute beast. I actually had to adjust my pressure to barely touch the old thinset to keep from digging into the concrete. Totally worth every penny. Make sure you have eye protection and a respirator! This thing throws debris everwhere.
by Rhees
My wife and I were pouring some GFRC Concrete counter tops in our backyard and once they had cure...
My wife and I were pouring some GFRC Concrete counter tops in our backyard and once they had cured needed a tool to smooth out the bottom edge. It was a little hard to convince my wife that we needed to spend this kind of money on a tool, but once I had it attached to my grinder we both realized it was worth every penny. To me the benefit of this wheel is two fold; the speed at which I was able to complete my grinding was far faster than I thought it would be. I had about 26 linear feet of edge to grind and this wheel chewed through it in a matter of minutes. The second is the quality of the edge that it left. You can see in the after photo that it is incredible smooth and barely needed any sanding. There was no chip out or breaking of the surface, it just removed the excess. We are going to be doing a few more concrete counter tops over the coming months and I am happy to have this grinding wheel in my tool box.
by Jamil396
2 people found this helpful
was using a scraper before I discovered this life time saving tool to take up mortar from removed...
was using a scraper before I discovered this life time saving tool to take up mortar from removed tile flooring! Be sure to get the dust tool with it to save even more of your precious life time cleaning up the mess this thing will make. Happy grinding...
by ab1
Worked brilliantly, ground concrete and granite with ease, did not wear very much so far.
Worked brilliantly, ground concrete and granite with ease, did not wear very much so far.
by Gclare
Worked great for removing grout and thinset and grind some minor high spots down from a concrete ...
Worked great for removing grout and thinset and grind some minor high spots down from a concrete slab before installing a floating floor.
by JR
I used this product to level out sidewalk trip hazards (some 1/2 inch high). I was impressed how ...
I used this product to level out sidewalk trip hazards (some 1/2 inch high). I was impressed how easily and quickly it ground the concrete away. I thought this grinding was going to be a hard job and it wasn't! Be sure to be safe when doing this - don't just use a ordinary dust mask - use a fume mask to protect your lungs. Safety glasses or a face shield is a must. This is what I used. 1.Milwaukee 7 Amp Corded 4-1/2 in. Small Angle Grinder Model# 6130-33, 2. Professional Multi-Purpose Respirator Black Drop Down Model # 63023DHA1-C 3. 3M Clear Professional Face Shield Model # 90028-80025 4. Heavy gloves 5. Knee pads or kneeler 6. Leaf blower to get rid of the dust - this process makes LOTS of dust - don't breathe it!
by WorkerBee
10 people found this helpful
It worked great on granite stone.
It worked great on granite stone.
by Greyrock
worked very well. I was stripping deck cover off of my concrete patio and this was the only tool ...
worked very well. I was stripping deck cover off of my concrete patio and this was the only tool that would do it. On a side note I would never put Behr Deck cover on any patio wood or concrete.
by HomeDepotCustomer
1 person found this helpful
I was pleasantly surprised at how well this worked and the speed at which it can grind a concrete...
I was pleasantly surprised at how well this worked and the speed at which it can grind a concrete surface. First application was to grind a 4 foot long heave crack in a concrete floor in preparation for repair and resurfacing. I was able to grind the length of the crack smooth in just a few minutes and will little effort. The blade didn't catch or bind. Next a brick threshold was smoothed for repair and covering. The wheel easily ground the brick in a very controlled way without cracking or knocking off big chunks. Next I used the wheel to remove paint on a concrete threshold. Worked very easily and quick. It was also very good at removing lumpy residue from a concrete bathroom floor after vinyl flooring was pulled up. Takes more time to remove sticky residue but was still very effective. I don't know how long this will last, but it already saved me a bunch of time and effort so well worth the investment. I was skeptical but this worked better than I had expected. Wear goggles, ear protection, and a good dust mask! Silica dust is very bad to inhale. You might want to consider wearing a disposable Tyvek overall suit too. Otherwise you will be covered in dust.
by RFE
5 people found this helpful
Worked great
I used this wheel for the first grind of my concrete counter tops. I used a disposable pad for the first top and it took forever. So a ran to HomeDepot and picked up this wheel and it sped up my process 100 fold. I blazed through the rest of the pieces.
by Splittfinger
6 people found this helpful
Showing 1-10 of 334 reviews