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Die Grinder internals?

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Die Grinder internals?

Unread postAuthor: inonickname » Mon Jul 12, 2010 9:54 am

Does anyone have pictures, diagrams, drawings or any information on the workings of a pneumatic die grinder?

I tried pulling mine apart this afternoon, but I'd have had to destroy it. I couldn't really get a good look inside.

For those who aren't sure, a die grinder is similar to a dremel, except running from an airline.

http://www.xairtools.com/showing_6/Mini ... inder.html

Thanks
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Unread postAuthor: spudtyrrant » Mon Jul 12, 2010 10:12 am

i couldn't fnd an actual picture, but i did find this, hope it helps
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Unread postAuthor: Heimo » Mon Jul 12, 2010 11:29 am

this is the best I can do also .....

here is the link for the pdf I took that from

http://d3cmirsdb60x3h.cloudfront.net/sc ... -2.big.pdf
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Unread postAuthor: jakethebeast » Mon Jul 12, 2010 11:51 am

hmm i think its like a propeller that spins when air flow through it
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Unread postAuthor: ramses » Mon Jul 12, 2010 1:56 pm

I was just looking at some air impact wrenches that claim ~500 lb-ft of torque. Does this rating include the effect of the hammering, or does it mean that if I attached a 1 ft horizontal bar to the end, it would lift 500 lbs?

IIRC, these things use rotary vane motors.
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Unread postAuthor: deathbyDWV » Tue Jul 13, 2010 2:20 am

Well if you take off the grinder assembly (only leaving the lever area), and plug some holes, it becomes a blowgun!!! I'm almost done with a coax using a broken one of these as the pilot...
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Unread postAuthor: inonickname » Tue Jul 13, 2010 3:35 am

ramses wrote:I was just looking at some air impact wrenches that claim ~500 lb-ft of torque. Does this rating include the effect of the hammering, or does it mean that if I attached a 1 ft horizontal bar to the end, it would lift 500 lbs?

IIRC, these things use rotary vane motors.


Thanks, this is what I was looking for. I found some pictures on the working of the rotary vane. Looks alright, but could be a PITA to machine.
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Unread postAuthor: jackssmirkingrevenge » Tue Jul 13, 2010 3:56 am

"Die Grinder" sounds like a vicious German industrial rock band :D
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Unread postAuthor: inonickname » Tue Jul 13, 2010 8:08 am

In fact, it's called a die grinder because it's made for touching up dies.. :roll:
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Unread postAuthor: metalmeltr » Thu Jul 15, 2010 9:33 am

ramses wrote:I was just looking at some air impact wrenches that claim ~500 lb-ft of torque. Does this rating include the effect of the hammering, or does it mean that if I attached a 1 ft horizontal bar to the end, it would lift 500 lbs?

IIRC, these things use rotary vane motors.
It is the effect oif the hammering. I highly doubt that it could lift 500lb.
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Unread postAuthor: ramses » Thu Jul 15, 2010 11:32 am

Thought so. So now I need to find a large gasoline engine instead.
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