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Metabo G12SR4 question

66HertzClone

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Dec 6, 2006
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Long Valley, NJ
I added one of these to my tool collection and want to get a few wire wheels that I can use with it. Despite my best efforts I have been unable to confirm the thread size of the arbor, 5/8 is my suspicion but I'd rather know for sure before placing an order and finding out that I am wrong. Can anyone confirm my guess?
 
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KnurledNut

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It takes standard 5/8"-11 like most angle grinders.
 
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Wamsutta

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I find a few things very peculiar about that Metabo HPT grinder. The most striking similarity is the side handle. It's almost a dead ringer for my BOSCH 1375A. The other thing is the style of the serrations on the slide switch. That slide switch looks identical to my 1375A. And then even the amperage of the motor is the same 6 amps. The BOSCH is no longer in production which leads me to wonder if BOSCH has sold the patent to Metabo HPT.



G12SR4-1.jpegG12SR4-2.jpegBOSCH 1375A.png
 
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neophyte

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Pennsylvannia
I find a few things very peculiar about that Metabo HPT grinder. The most striking similarity is the side handle. It's almost a dead ringer for my BOSCH 1375A. The other thing is the style of the serrations on the slide switch. That slide switch looks identical to my 1375A. And then even the amperage of the motor is the same 6 amps. The BOSCH is no longer in production which leads me to wonder if BOSCH has sold the patent to Metabo HPT.



G12SR4-1.jpegG12SR4-2.jpegBOSCH 1375A.png
European tool manufacturers “trade parts” and do “OEM Manufacturing” for each other on a routine basis.
There also seem to be separate manufacturers that make certain parts for a bunch of different brands.
The angle grinder side handles usually use one of maybe three thread patterns, so a bunch of manufacturers may use the same side handles.
The only handles that are likely to be proprietary, are ones with highly visible branding, or special features like vibration reduction, or built in flange wrenches.

As for the switch, most power tool manufacturers buy components like those from specialty suppliers.
Marquardt is a major European supplier.

Bosch has sourced power tools from other suppliers at times, (at one point some larger grinders were made in Russia), and was likely the OEM supplier at others.
It’s possible that Bosch has made grinders for Metabo, or Metabo for Bosch.
 

Wamsutta

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Joined
Jan 8, 2014
Messages
10,871
Location
Amarillo, Texas
European tool manufacturers “trade parts” and do “OEM Manufacturing” for each other on a routine basis.
There also seem to be separate manufacturers that make certain parts for a bunch of different brands.
The angle grinder side handles usually use one of maybe three thread patterns, so a bunch of manufacturers may use the same side handles.
The only handles that are likely to be proprietary, are ones with highly visible branding, or special features like vibration reduction, or built in flange wrenches.

As for the switch, most power tool manufacturers buy components like those from specialty suppliers.
Marquardt is a major European supplier.

Bosch has sourced power tools from other suppliers at times, (at one point some larger grinders were made in Russia), and was likely the OEM supplier at others.
It’s possible that Bosch has made grinders for Metabo, or Metabo for Bosch.
It's an awesome grinder. I've been out there using it today to grind steel. I've a got another one that I keep a sanding disc on. It's out of production, but I managed to find another one at a White Cap store with a thick layer of dust on the box. My original 1375A came from the same store 20 years ago. So far the only thing I've needed to do to it is change one armature bearing and of course change out the grease in the gearbox. Fantastic grinder. The first one I bought 20 years ago was made in USA and I carried it in my backpack to welding class.
 
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