Model # HD-AWD40

Internet #202884364

Store SKU #140029

RIDGID 4 in. Double Row Diamond Cup Wheel
0850650001748

RIDGID

4 in. Double Row Diamond Cup Wheel

  • Works for wet and dry applications
  • Delivers 15,000 RPM
  • Ideal for leveling, removing coating and grinding concrete
$3997 /each

Frequently Bought Together

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

Info & Guides

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Specifications

Dimensions

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Customer Questions & Answers

Can I wet grind concrete with the Rigid diamond cup wheel?

I need to grind down a hump in my concrete floor and want to minimize dust.
Asked by: Anonymous
Works great with water. I suggest working small areas and stand a few 2x6 blocks around the area you are working to contain the wet muddy spray. This worked great for me and made cleanup a lot easier
Answered by: grinder
Date published: 2016-12-06

Can I use a 4" grinding wheel on a grinder designed for 4.5" wheels?

Asked by: BobM
Yes, you just don't want to use wheels that are bigger than intended for your grinder.
Answered by: dustin1101
Date published: 2016-10-15

Do I install with lock nut? Doesn't seem to have enough room when on spindle.

Do I install with lock nut? Doesn't seem to have enough room when on spindle.
Asked by: AdamB
No, it threads on. Fits perfectly on my Ryobi.
Answered by: Pianodude
Date published: 2017-05-13

Can I attach this to a cordless drill?

Asked by: StanleyRoper
I wouldn't think this would work well because a drill isn't fast enough. I think the wheel would be very difficult to control. Also you'd need to find some sort of arbor to adapt the 5/8"-11 thread to your drill chuck.
Answered by: dustin1101
Date published: 2016-10-15
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Customer Reviews

4 in. Double Row Diamond Cup Wheel is rated 4.7 out of 5 by 83.
Rated 5 out of 5 by from 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.
Date published: 2017-01-02
Rated 5 out of 5 by from Used it to "grind" off paint on a concrete slab. Did an outstanding job of removing paint as wel... Used it to "grind" off paint on a concrete slab. Did an outstanding job of removing paint as well as finishing off the concrete surface. Tried strippers and would have gone broke using chemicals to get through 3 layers of paint on porous concrete. Fortunately, only had a 6' square surface to deal with. Anything much larger and I imagine there's a larger professional appliance that would do similar work.
Date published: 2017-05-02
Rated 4 out of 5 by from Product delivered what it said it would do. I used it to grind down come concrete for counter top... Product delivered what it said it would do. I used it to grind down come concrete for counter top trials. But being such a small diameter it was really easy (for me) to grind unevenly and gouge material but that is more user error than product.
Date published: 2017-03-19
Rated 5 out of 5 by from I don't do many reviews but, this tool save me TONS of work removing carpet adhesive off of the p... I don't do many reviews but, this tool save me TONS of work removing carpet adhesive off of the porch. (concrete) Tried Goof off and it worked ok but this help me do a 15 X 20 porch in under two hours. Buy this first,you won't be sorry !!!
Date published: 2017-04-13
Rated 5 out of 5 by from I used this to grind a slope in front of my garage doors so water would stop running in when it r... I used this to grind a slope in front of my garage doors so water would stop running in when it rained. It is a grinding animal !! It is quite aggressive and can remove concrete very quickly. It worked better than I thought it would.
Date published: 2017-04-16
Rated 5 out of 5 by from I tried to level a bit of concrete using an old cutting blade and it did nothing. Then I found th... I tried to level a bit of concrete using an old cutting blade and it did nothing. Then I found this and was amazed at how easily it cut through. I leveled a 3'x3' area pretty quickly. I'm still cleaning up the dust, however :-)
Date published: 2017-01-28
Rated 5 out of 5 by from I needed to remove old thin set mortar after I removed tile, this cup wheel dissolved it like but... I needed to remove old thin set mortar after I removed tile, this cup wheel dissolved it like butter on a hot skillet. I have been a fan of Ridgid brand of tools since the mid 80's IMO Ridgid is still making quality products.
Date published: 2017-03-01
Rated 5 out of 5 by from Used this to shave down some areas of my sidewalk that had become uneven. Took a little bit of ti... Used this to shave down some areas of my sidewalk that had become uneven. Took a little bit of time, but the results were great! Way easier than breaking out the old sidewalk and pouring a new one!
Date published: 2017-04-18
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