Die Grinder Question

[austinlord13]

I bought a Kobalt Mini Air Die Grinder today, I noticed it had a screw on the side. I think it is some sort of valve. Could somebody tell me what it is and what it does. I turned it a little bit while I had it hooked up to the compressor to see if it maybe changed the speed, but I didn't notice anything.

 

[G1GRANDEUR]

LOL, that is some tiny grinder.

It didn't come with the manual?

 

[GirlnAgarage]

Possibly the oil hole

 

[austinlord13]

LOL, that is some tiny grinder.

It didn't come with the manual?

It looks tiny. But it's a 25000 RPM, 1/4. It came with a manual, but it didn't say anything about it.

 

[shampoop]

speed control. I hear they often don't actually work very well.

 

[Dust]

Ignore it. If you need to turn the speed down just lower the air pressure with a regulator.

 

[oldtools]

It control how much spring pressure is acting on the air valve inside. It does not control speed.

 

[Jack Burton]

My Kobalt cutoff tool has one too but I haven't screwed with it. I imagine it's a flow control to compensate for irregularities in the castings and to make sure the tool doesn't spin too fast and blow your wheel up.

I'll check out my blow-up diagram but I just assumed it was a lawyer's feature.

 

[darkk]

I have some air ratchets with the same screw. It's to adjust the air volume through the tool.