I have three angle grinders: an old Milwaulee, an old Makita, and a newer Ryobi. All three seem to have different sized threaded studs for the attachments. Why the heck is there no industry standard so all attachments fit all grinders? 
Angle Grinders...Why So Many Variations?
- Thread starter Bull
- Start date
Nealcrenshaw
Well-known member
They do make thread adapters for angle grinders,check out grainger or Msc direct.
alex71
Well-known member
The standards that I'm aware of are 5/8-11 for 4-1/2", 7", and 9" grinders and 3/8-24 for 4" grinders. Haven't seen anything else. what's on yours?
I don't know...I was looking through all of them today and trying to put together one with a cut off wheel so I can cut some sheetmetal. Maybe my eyes deceived me, but I thought I saw three sizes. I will check tomorrow to confirm.
LGMechanical
Well-known member
My Makita 9554NB 4-1/2" is 5/8". But the 9553NB 4" is M10 x 1.25
Merkava_4
Banned
Why the heck is there no industry standard so all attachments fit all grinders?
There is ... it's 5/8"-11
Uncle Buck
Banned
Everything I have is 5/8" x 11
Stick Figure
Well-known member
i guess i've never had a 4" makita, i know my 4.5" is the 5/8 x 11, as is my POS harbor freight backup. Good to know though since I need to pick up another makita, just don't see the paddle switch ones in regular stores, and i don't think about it often enough to order it online.
nate379
Banned
5/8"x11 for everything I have but I have nothing smaller than a 4.5", and use 5" wheels on it anyhow.
Well, which of the pictured sizes has gone away and become obsolete due to poor market performance?
LGMechanical
Well-known member
What is the make/model of those grinders?
nate379
Banned
LGMechanical
Well-known member
I was asking so I can look them up and see what the sizes are. I myself have never seen anything other than m10 or 5/8". Post up the model # when you get a chance. Thanks.
alex71
Well-known member
7/8" center hole on discs is very common for 4.5" and up discs. Never seen a 7/8 spindle on a grinder, not even a 9". Weird....
Sure that image isn't photoshopped?
Sure that image isn't photoshopped?
Haha! I don't even have Photoshop. Really, that pic is totally legit. Maybe I can take the Ryobi on a "Grinder Freak Show" tour to supplement my income.
alex71
Well-known member
maybe the oddball is M14. look at this http://cgi.ebay.com/Jacobs-Quick-Re...ools?hash=item27ab65027e&_trksid=p3286.c0.m14
stock z/28
Well-known member
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I have the same spindle on a couple of my Milwaukee grinders as well. It may be 1/2"?
I think about all of my Makita 4" are metric (10mm?) and the discs will have a 5/8" center hole.
The milwaukees in question I "think" use a 7/8 center hole like the 5/8 threaded grinders as well.
I have some Skill 4 1/2" disc grinders that use a 3/8" threaded arbor
I think I may even have a couple of other 4 in grinders that may have an even different spindle thread?
Jeff
I think about all of my Makita 4" are metric (10mm?) and the discs will have a 5/8" center hole.
The milwaukees in question I "think" use a 7/8 center hole like the 5/8 threaded grinders as well.
I have some Skill 4 1/2" disc grinders that use a 3/8" threaded arbor
I think I may even have a couple of other 4 in grinders that may have an even different spindle thread?
Jeff
alex71
Well-known member
You win the prize for most **** (and I mean that in the nicest way possible) in the smallest amount of space. Wow... Or do the pics just make it seem like it?
stock z/28
Well-known member
- Joined
- Dec 17, 2006
- Messages
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You win the prize for most **** (and I mean that in the nicest way possible) in the smallest amount of space. Wow... Or do the pics just make it seem like it?
I could use a larger shop if anyone wants to donate.
tpolley
Well-known member
not to hijack the thread or anything but...
my friend let me borrow his 4.5 inch or so metabo angle grinder. hands down the nicest angle grinder i've ever used. what i really liked about it was the tool-less ball bearing detent adjustable guard. well, the metabo grinder is anywhere from $180-ish to $250. i dont like the grinder that much. i cant seem to find any other manufacturer that used the same ball bearing detent adjustible guard. anyone know of one?
my friend let me borrow his 4.5 inch or so metabo angle grinder. hands down the nicest angle grinder i've ever used. what i really liked about it was the tool-less ball bearing detent adjustable guard. well, the metabo grinder is anywhere from $180-ish to $250. i dont like the grinder that much. i cant seem to find any other manufacturer that used the same ball bearing detent adjustible guard. anyone know of one?
jniolon
Well-known member
dragging up a 3 year old thread looking for a solution... I've got 4 grinders that I use regularly...and all but one have a 5/8" - 11 spindle... I like to keep one with a grinding rock, one with a flap disk, one with a cutting wheel, one with a wire brush
I've got one Milwaukee 6145 with a 1/2" - 13 spindle and have to use the flanges to hole the flapdisk on it. I have a load of threaded flappers that I can use but won't fit this grinder and I'd love to get rid of the flanges and that funky spanner wrench...
anyone know of a adapter that will screw onto a 1/2" spindle and size up to a 5/8 ????
can't seem to find anything but 5/8 to 10.2 metric (or whatever)
thanks
John
I've got one Milwaukee 6145 with a 1/2" - 13 spindle and have to use the flanges to hole the flapdisk on it. I have a load of threaded flappers that I can use but won't fit this grinder and I'd love to get rid of the flanges and that funky spanner wrench...
anyone know of a adapter that will screw onto a 1/2" spindle and size up to a 5/8 ????
can't seem to find anything but 5/8 to 10.2 metric (or whatever)
thanks
John