What size angle grinder?

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I have a 4.5 inch angle grinder, and I’m looking to get another one. Is there any benefit to a 7 inch one over 4.5, or are they too bulky to use?
Reply:Ambiguous questions.Lincoln 330MPXLincoln Power Mig 256Lincoln LN-25X Wire FeederMagnum PRO 250LX GT Spool GunLincoln AC/DC 225¼ Ton of Torches OFC-A OFG-AAir Carbon Arc Gouging CAC-AEverlast 62i Plasma CutterIngersoll Rand T-30 14hpInstagram: #Freebird Welds
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Originally Posted by Freebirdwelds

Ambiguous questions.
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Originally Posted by TooNew

Do you not understand what is being asked?
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Originally Posted by Lis2323

i'm quite certain he does ...
Reply:7 and 9 inch grinders (re)move material faster. For most work, a 4-1/2" grinder is a good choice. I like the low vibration Bosch grinders. They have some 10+ amp 4-1/2" grinders and they're pretty nice.Sent from my Lincoln Buzzbox using Tapatalk
Reply:Oh, and keep in mind that the rim speed of a 4-1/2" and a 7" grinder is about the same. So, the abrasive wheel is actually spinning against the work at roughly the same velocity for both wheels. Sent from my Lincoln Buzzbox using Tapatalk
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Originally Posted by TooNew

I am essentially asking for the pros and cons of a 7” grinder over a 4.5”
Reply:Heavy work requires heavy tools.  I keep 2 sizes of grinders: 4.5/5" and 9".  I ran the 9" today on some 1" plate.  You want to bevel something quickly or remove a LOT of material, you run a bigger grinder and/or a more aggressive wheel.  I spend the bucks and run Walter Xcavators on my 4.5" grinders, and I'm still using down a stock of 9" Double X's that I bought years ago.  I've run some real crap grinding wheels working for other companies....not when I'm footing the bill.  It's nearly a pleasure to grind when the wheel eats as opposed to polishes.If I were to choose another size of grinder as an in-between, I'd go 6" in a big-motor, rat-tail style with a lock-on trigger switch.  I briefly tried a Metabo 6", burnt it up in short order.  I have to assume it was a glorified 5" motor on the inside and wasn't up to the task.  They wouldn't warranty it because the the thermal switch was supposed to shut it down on overheat...but it didn't.  The next 6" I get, whenever I get around to it, will have the biggest dang motor I can buy.  I've burnt up two 9" Milwaukees, and have replaced them with 9" Metabos which are hanging in there as are my 4.5/5" Metabos.  The only Milwaukees I've got left are a few of the old 5.5A paddle-switch models and one 10A which doesn't get much use.  Oh, and the M18 Fuels, which I've only burnt one of up so far.
Reply:Been happy with my Dewalt 6".  Use the very rough grit Sait wheels, and it will remove a lot of stock fairly fast.Mine is the older version of this one............  https://www.dewalt.com/product/dwe43...der?tid=577126Last edited by farmersammm; 1 Day Ago at 02:23 AM.
Reply:If you only have one 4.5” grinder imo your next one or two should be the same size before stepping up to a 7-9”. Sent from my iPad using Tapatalk:
Reply:I have used 7" and up.But in retirement I like 4.5" angle grinder. I can on a latter use with one hand 🖐. Dave

Originally Posted by TooNew

I have a 4.5 inch angle grinder, and I’m looking to get another one. Is there any benefit to a 7 inch one over 4.5, or are they too bulky to use?
Reply:If I were to do it over, I’d have three or four 4-1/2grinders,with different discs,wire wheel, flap wheeletc. before buying a 7”.   When I bought my Milwaukee 40+ years ago, Ididn’t know 4-1/2 grinders existed. Maybe they didn’t.Miller a/c-d/c Thunderbolt XLMillermatic 180 Purox O/ASmith Littletorch O/AHobart Champion Elite
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Originally Posted by TooNew

I have a 4.5 inch angle grinder, and I’m looking to get another one. Is there any benefit to a 7 inch one over 4.5, or are they too bulky to use?
Reply:I have 4  4.5" grindersAnd 3 or 4  6"/4.5 Dewalt grindersAnd one 7"Get some more 4.5s before you get a 7Get  the Dewalt 13amp 6"/4.5" grinders, they're very powerfulIf you're doing sanding with fiber disks or flap wheels, then get a paddle switch.All depends on what you do most of. Sent from my SM-G973U using Tapatalk

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Reply:My personal preference is to have at least two 4.5" grinders.  That way you can keep one set up with a grinding disk and the other set up with cutting disks.  This stops you from having to swap out the disks when you're working on something.The larger grinders are great if you're doing a lot of work, either grinding or cutting.  However, they can be a bugger to get into tight spaces and the like.  If you're working on big flats, in the open, and have a lot of metal to work on.... a bigger grinder is the more robust option and removes material quicker.  I think you'll use it less than you think, but it's still a good tool to have around.If you don't have at least 2 4.5" grinders, I'd get that fixed before worrying about a bigger version.
Reply:I agree My first Dewalt aka B&D 4.5" grinder  everyday use with employees lasted 15 years and new is still going 22 years.Great grinders I think most do not know Dewalt is own by Black and Decker  since 1960. Dave

Originally Posted by MetalMan23

I have 4  4.5" grindersAnd 3 or 4  6"/4.5 Dewalt grindersAnd one 7"Get some more 4.5s before you get a 7Get  the Dewalt 13amp 6"/4.5" grinders, they're very powerfulIf you're doing sanding with fiber disks or flap wheels, then get a paddle switch.All depends on what you do most of. Sent from my SM-G973U using Tapatalk
Reply:It's not like a p***s... you can get any size you want...The harder you fall, the higher you bounce...250 amp Miller DialArc AC/DC StickF-225 amp Forney AC Stick230 amp Sears AC StickLincoln 180C MIGVictor Medalist 350 O/ACut 50 PlasmaLes
Reply:Unless your doing lots of grinding or using a big wire wheel or cone brush a 4 1/2 or 5 inch is sufficient IF I was getting any new grinders for around the shop I would get a cordless grinder
Reply:I have three 125mm (5") angle grinders set up with different discs. This is my go-to size.I have a 100mm (4") angle grinder in case the larger ones won't fit in the space. I don't use it much.I have a 230mm (9") angle grinder for when something big is needed. I use it if I have to because I think it is too heavy, too bulky and has too much gyroscopic stubbornness.Battery ones are much more convenient than mains operated.So, my suggestion is, if you must have a large angle grinder, get one. Otherwise get an additional 5" one.Jack
Reply:everyone is different so just determine what works best for you. Sent from my iPad using Tapatalk:
Reply:13 amp dewalt at 4.5/6 inch
Reply:I literally have around 25 grinders of various sizes. My favorite mid size is a Metabo 6". I do also like the Dewalt, Milwaukee, and Metabo 4.5" grinders. My favorite 7" grinder was a Milwaukee. I say was because about a month ago my son was taking dross off something with a heavy wire wheel on it and the wire wheel caught his apron tearing a hole in it and the grinder went flying across the concrete floor and ripped the cord out of the grinder somehow. Cracked the housing. Tried taking it apart to wire it back up but couldnt get two of the screws out so we chucked it. Sad day. I have other 7" - 9" grinders but that was was my favorite for sure due to its power and how light it was and it took a licking and kept on ticking for a long time. Right up until the end anyway. The one grinder brand I hate with a passion are the ones from Harbor Freight. I bought some on sale once for $9.99 apiece thinking I couldnt go wrong at that price. I was wrong! Burned them up left and right. Pieces of junk. However if a person did very occasional very light grinding it would be ok for the price.