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Model#: DEWNDW4774

What are the different product conditions?

Brand new items;Full manufacturer warranty available
Manufacturer inspected, repaired and tested items; CPO 60 day money back guarantee
Open Box
New or Recon items with possible minor cosmetic damage; CPO 60 day money back guarantee
Returned items inspected, repaired and tested by CPO technicians; CPO 60 day money back guarantee

Dewalt DW4774 4-1/2 in. Extended Performance Cup Grinding Wheel

  • Dewalt DW4774 4-1/2 in. Extended Performance Cup Grinding Wheel
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  • Advanced diamond matrix provides long life and enhanced material cutting
  • Segmented rim blades are laser-welded with heat-treated steel bodies, providing increased durability and long life
  • Large diamond segments with cobalt ideal for use across various product applications
  • 4-1/2 in. Extended Performance Cup Grinding Wheel - DW4774


Arbor Size: 5/8 in. - 11
Diameter: 4-1/2 in.


  • Best for cutting concrete, stone and block
  • Fast rough cutting
  • Double segment row
  • Heavy-duty masonry grinding
  • Recommendations


    3.7 / 5.0
    3 Reviews
    5 Stars
    4 Stars
    3 Stars
    2 Stars
    1 Star
    Would you recommend?
    Yes (2)
    No (1)
    Easy To Use (1)
    Powerful (1)
    Best Uses
    Home Repair (1)
    Yes, I would recommend this to a friend
    Great product
    Does exactly what it says on the tin...Grinds concrete! and fast.. you need to keep it moving all the time on concrete or it will dig a hole pretty quick...
    i am on my second one after 8 months so they are great value.

    NOTE: these guys kick up a lot of dust, i would recommend using the dust shroud and vaccuum
    February 13, 2016
    No, I would not recommend this to a friend
    Best Uses
    Home Repair
    Poorly designed
    Once the wheel is on the grinder you need a special thin wrench to remove it as the nut is on the inside and should be on the other side. Works OK but not as good as expected
    December 19, 2014
    Yes, I would recommend this to a friend
    Easy To Use
    Polishing wheel not grinding wheel
    Dewalt wheel did a fine job polishing concrete. Did not remove concrete nearly as fast as Rigid Double Row Diamond wheel.
    July 31, 2015

    Questions & Answers

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    Browse 1 question Browse 1 question and 1 answer
    Do you have the thin spanner wrench necessary to remove the DeWalt DW4774 4 1/2" diamond cup wheel from the grinder spindle? So far, this has been a critical design flaw, and a huge time wasting and costly anoyance. Hope you can help!
    Prof. Dave
    Professor Dave on Apr 7, 2016
    BEST ANSWER: For assistance with this question, please contact Dewalt directly at 800-433-9258


    Dewalt Accessories Warranty

    The warranty on new DEWALT accessories is as follows:

    DEWALT offers a 30-day money back guarantee on all DEWALT accessories, except for pressure washer accessories. DEWALT accessories are fully guaranteed against defects in material and workmanship. The warranty does not cover misuse of product or normal wear and tear.