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
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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

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: 2017-05-24

Will this ba able to grind down a sidewalk slab that has lifted ? Has stone in mix.Need to remove...

Will this ba able to grind down a sidewalk slab that has lifted ? Has stone in mix.Need to remove 1/2 " of material.
Asked by: Toolman1
Yes. I did this to two panels without any problem.
Answered by: diyguy
Date published: 2017-07-18

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: 2017-05-24
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Customer Reviews

4 in. Double Row Diamond Cup Wheel is rated 4.7 out of 5 by 95.
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 3 out of 5 by from Wore out quicker than expected. Grinding surface of 2... Wore out quicker than expected. Grinding surface of 2 car garage prior to applying epoxy paint. Work out before half done.
Date published: 2017-05-16
Rated 5 out of 5 by from Used to clean up old tile mortar. Was pretty dusty... Used to clean up old tile mortar. Was pretty dusty but did a great job and didn't take long.
Date published: 2017-05-16
Rated 3 out of 5 by from Not well balanced I have used other cup wheels mainly made by Pearl that are much more expensive. I got this to grind some uneven surfaces. Works decent but it is really bouncy. I will use it up but I dont think I will buy another one. I decided to try it out because the price is very low. There is no way I would use this to bull-nose granite or anything that requires precision. It is just too bouncy. It is fine for grinding uneven concrete though.
Date published: 2017-06-21
Rated 5 out of 5 by from Bought this item to remove undulations in walls of a concrete jacuzzi, prior to resurfacing. It... Bought this item to remove undulations in walls of a concrete jacuzzi, prior to resurfacing. It can be used flat against the surface and the edge cuts as well, so it cleans out the corners too. It is much faster than a masonary grinding disc, and will last much longer, so far the only sign of wear is to the paint finish! Also available in 5" dia. which would fit 4.5" grinder and 12" which needs a larger machine.
Date published: 2017-06-02
Rated 5 out of 5 by from I was looking to try and knock down some high spots in my basement floor, because using self leve... I was looking to try and knock down some high spots in my basement floor, because using self leveling compound would not work for my needs. I used this wet, by just misting with a water bottle as I went, and it really kept the dust down. I would by this again, if I needed another.
Date published: 2017-06-20
Rated 5 out of 5 by from I am very pleased with this product considering the price. I have probably ground more than an ho... I am very pleased with this product considering the price. I have probably ground more than an hour on landscaping block and it is still cutting well. Because it was the cheapest item of its type on the display at the store I wasn't sure it would hold up.
Date published: 2017-05-30
Rated 5 out of 5 by from This worked great with my 4-1/2" Makita angle grinder to add a bevel to my uneven sidewalk. It... This worked great with my 4-1/2" Makita angle grinder to add a bevel to my uneven sidewalk. It took roughly 10 minutes to grind away 1/2" of concrete on a 2' section of sidewalk. Now my neighbors want me to fix theirs to avoid replacing their panels.
Date published: 2017-07-18
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