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Wire wheels

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  • Wire wheels

    I have been looking for a wire wheel for my Makita angle grinder and can't find one
    to fit. The guard will only accept a 4" one and the spindel is a small diameter
    (probably metric) threaded that uses a shoulder washer to center the grinder
    wheels. So a 4" diameter with a 5/8" plain hole (like the common ones for bench
    grinders) is what is needed. I've checked the local places, HF, Lowes, HD with
    no results. All the wheels smaller than 6" seem to be either with a 5/8 threaded
    center or with a shaft for a drill. Any one know of a source?

  • #2

    I think you will find one here.



    • #3
      I think I have the same grinder. My abrasive wheels are retained with the piloting collar you describe, and my wire brushes thread on.

      Have you tried a welding supply shop? They often have higher quality products at fair or even better prices (an account may get you a discount). It's funny how much stuff sold to the lowly guy on the street is lower quality than that which is sold to professionals. That applies not only to welding supplies, but also to cooking supplies, food ingredients, etc. Seems like everything.

      Bonus at the welding shop, the employees probably know what they are selling.


      • #4

        The angle grinder wire wheels use a thread for a reason. They tend to get out of balance and become unsafe.

        From memory I think yours is likely M10 X 1.25. Measure before you order.



        • #5
          I'll check the threads Thanks. I didn't think the balance would be bad enough to keep a
          regular wheel with a hole from working adequately, in a 4" one. The bigger ones like
          6 and 8 inch on a bench grinder seem to work just fine. :-)
          There is a welding supply place down the street a few miles I'll stop in tomorrow and
          see if they stock such. I hate to order a little bit of stuff like this.
          Thanks again for input.


          • #6
            I have a dozen angle grinders in my shop, we use em a lot.
            I stick with Weiler wire brushes- I have always been happy with the quality-
            there are two metric sizes- 10mm and 14mm

            My welding supply shop stocks maybe 20 different sizes and types of wire brushes for angle grinders- I think you will be able to find what you need at one.

            Me, I have Amazon Prime, so orders of small stuff are all free shipping.
            They say you need to make 7 to 10 orders a year to break even paying for Amazon Prime.
            I looked it up, we made 38 orders so far this year, and 54 last year- so its well worth it for me to pay for Prime.
            I had one order last year where I saved $400 in shipping by having Amazon Prime.
            Amazon has Amazon Supply now- its their attempt to compete with grainger and mcmaster, and while its nowhere near as good as mcmaster, it still has a lot of hardware and industrial stuff, and, with free shipping from Prime, I use it a fair amount.
            But I live in the country- takes me about an hour and a half, round trip, and maybe 5 bucks worth of gas, to go to Home Depot, so free shipping and no driving is a no-brainer.


            • #7
              Makite has an M10 spindle thread. Remove the spindle nut and loose washer and store them someplace handy. Screw the wheel directly on the spindle. You will probably want at least two angle grinders in the 4" to 5" range if you do much metal fabrication. One for grinding, one for wire brushing.

              Here you go. It's an eBay search under "wire cup wheel."


              My first search return was "DeWalt 3" knotted wire cup wheel ... fits Makita," four for $19.95 BIN. Pretty convenient huh?

              Use the wheels with an integral threaded hub. Makita has a 10MM spindle so that's what you look for. I have a half dozen angle grinders of several brands from a Metabo 6.8 Amp top quality tool I use for grinding welds and touching up fit-ups to several Harbor Freight I use for specail purposes like flap wheels for fine finishing. I have one with a skinny 1/8 parting wheel, one with a coarse knotted wire cup wheel I use for rust and scale. One finer wire cup wheel I use for general clean-up, One with a sanding disk, and a couple duplicates at the other end of the shop. Get the idea: Need a certain wheel? Grab the grinder equipped with it. No stopping to swap wheels.

              The cheap ones are cheap naturally but if you can tolerate trading-in the lemons until you get a good one, cheap grinders work out well for limited uses. If your needs require reliability and hogging power you better get the $150 models.

              Balance in high speed power tools is always a problem. My complaint is something called vibration neuopathy where the hand tingles long after the work is done and if the vibration is protracted, your hands grow numb. You do a lot of high speed hand grinding you may get some permanent sensation loss.

              Most cases some vibration can't be helped because abrasive wheel wear and wire shedding cannot be controlled for symmetrical loss. Padded gloves help but,... I've found no good solution. A grinder on which s mounted an almost perfect wheel may run sweet but after a few minutes and maybe a catch or two, your hands are tingling.

              The better consumer grade grinders are usually in good balance when run without a wheel. Cheaper one less so. Let that be your first check when you get home with a new grinder and open the box. If you feel vibration, take it back. The best feedback we consumers have available to us is return of defective merchandise. Store management and the manufacturers HATE returns; they lose money and it affects the sales/production numbers. Thus returns instigates a powerful incentive to improve quality as a way to reduce returns.

              Work safely: Cup wheels throw wires hard enough to penetrate jeans. You generally use an angle grinder below waist level. Don't get a wire stuck in the ped of your hecker.
              Last edited by Forrest Addy; 08-18-2014, 12:50 PM.


              • #8
                Not exactly to topic, but...
                For wire wheels I like a slower speed grinder, or one with variable speed.
                I think Milwaukee and Metabo make variable speed models.
                What I use for wire wheels is an old 7" Wildcat (style) grinder, really a
                sander, because speed is 3200 rpm, rather that 7000 rpm for that size
                of a grinder. The 4 1/2" size grinders are 10,000 rpm or more. A little
                scary to run wire wheels that fast, even though they are rated for it.


                • #9
                  I used to have a pair of 4" Makita grinders. I discovered that at my local Ace hardware (McLendon) there was a Forney section and in it they had 10mm to 5/8-11 adapters. Never used another 10mm item again. Those adapters are (or were) inexpensive, too, just a few bucks.


                  • #10
                    I like the Walter abrasives...
                    guy I buy them from lets me have them cheap, for some reason they never seem to be popular, for me, perfect but then I like many of Walter's abrasive products.

                    Gotta say I am surprised at the metric threads...Canada has been supposedly metric since, what? 1974? and I still buy all my stuff 5/8 threaded and it fits the Makitas I have or have had, couple of 4 1/2" and the 7" and all the rest, DeWalts, Cdn Tire Max etc..
                    Curious, so I had to look, the US Makita site only lists one 4" angle grinder, and it appears to be the only one with metric (10 x 1.25) threads, all the remaining 4 1/2" and larger ones are 5/8 x 11. Never had 4" as most seem to have the handle design that angles slightly, which I can't stand.


                    • #11
                      This maybe somewhat strange but I machine washers to accommodate a few different wheels. I start with my 7 inch, grind down to 5 inch. switch to another disc grinder, grind down to about 3 inch and switch to my die grinder' When finished, the wheel is about 1.5 inch and I have maybe gone to the Dremel a couple of times. I hate to throw these away. But I am retired and .... Wayne.


                      • #12
                        Whoops: Saw wire wheel. My add ons are for disc and cut off wheels, sorry. Wayne.


                        • #13
                          On a new AEG angle grinder I bought recently it has an anti vibration handle that screws onto the head. It makes a big difference to the numbing situation mentioned earlier in this thread. If I have a lot to do with my other angle grinder I actually switch the handle over to the Flex brand grinder.
                          Location: The Black Forest in Germany

                          How to become a millionaire: Start out with 10 million and take up machining as a hobby!


                          • #14
                            You have to buy a 4 1/2" grinder to use most angle grinder accessories.

                            4 1/2" to 12" all use the same thread and pilot size (But please note that 6" and bigger accessories have a LOWER rpm rating then a 4 1/2" angle grinder!)

                            4" use some other thread and are MUCH harder to find accessories for that fit. (the M10 mentioned in other posts?) You will find them basically marketed as "for 4" grinders"

                            As far as how much to pay for an angle grinder. Iv bought two ($20) cheap ones, burned out the trigger switch (Was only working occasionally?) on one and decided it had long since given me more use then any other power tool in my shop. So I bought a $120 one and it is rather nice to use.

                            I generally buy cheap tools and only use them for what they are designed for, they last a long way that time and if I burn them out doing what they are designed to do with lots of normal use, I upgrade to better tools. So far that is pretty much only my angle grinder that I have upgraded. they really are wonderful tools.
                            Last edited by Black_Moons; 08-20-2014, 10:15 PM.
                            Play Brutal Nature, Black Moons free to play highly realistic voxel sandbox game.


                            • #15
                              I have a bunch of 4 1/2 grinders, but my 20 year old 4 inch 10mm thread Makita won't die, so I still have to stock 4 inch stuff ( I do have an adapter now - thanks MM). It a bit wimpy for knotted brushes though. I busted the gears on my "new" 4 1/2 Makita twice using a knotted wire brush - pretty brutal on light grinders. My "go to" 4 1/2's are both Bosch - $10 each at a garage sales. I beat the crap out of them and they keep on running, but the end is near for one.

                              If you want them to last longer, take the gear box apart every year (dead simple) and grease with the same grease sold by Stihl for weed-eater heads - any Stihl dealer will have it.