shop built "pedestal" grinder?

PT Doc said:
would anyone have accurate specs of what a shaft for a grinder measures out at across the length?

or does someone have any interest in measuring your 10" or 12" grinder shaft at the ends for thread pitch, steps etc.

I might have a shaft made since asking on 4 other forums got me no where in regarding to buying one press made.

Thanks in advance.
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Be aware the thread on the left is a left hand thread to prevent it loosening in use.
 
We've got some 480VAC 3 phase pedestal grinders where I work that are absolutely massive. I want to say that some of them have 14" wheels on them that are about 2" to 3" thick.

I usually flip the switch on for a few seconds and then shut it off. I bet the wheels will spin for another 10 minutes before it stops.
 
Great Idea. I saw Bruce Bump (picture WIP) use one for removing the welds on HOT billets. I am only going to use one or two 'used' cut off blades at a time. I want it thin to grind out the billet MIG welds. My first attempt a month ago was mounting the blade directly onto the motor shaft (via a coupler I cnc milled). It worked good, but my motor is an open frame and I did not want to reduce its life with all the filings getting in there. I now fabricated a 18" shaft that will be mounted on one side via pillow blocks. I want the other end shaft longer then direct mounting so I can use both sides of the grinding wheel while not fighting around the motor (if that makes sense).

No pictures as I only have it in parts now. I hope to get back onto this before winter, then to cold to forge. This was my interpretation of pictures I read on a Bruce Bump WIP.

Denniis
 
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Interesting. Been around a bunch, even owned a few and never used them. I'll take a 9" angle grinder and a drawer full of accessories any day. More control and more choices.
 
Tilaran said:
Interesting. Been around a bunch, even owned a few and never used them. I'll take a 9" angle grinder and a drawer full of accessories any day. More control and more choices.
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That seems like an odd observation since you said yourself you've never used one... :rolleyes: LMAO

It depends on what you're using the tool for. If doing something like grinding a ladder pattern billet down, I prefer a big angle grinder with a snagging wheel. But if I'm putting a bevel on the end of a 5/8" wide bar to weld it on as a handle, that job is a hell of a lot easier and safer on a stationary grinder.
 
seems like there are 3 phrase big grinder if you are patient and in the right place. might be a good reason to buy an rpc. verifying that it works could be difficult since many sellers seem to not have 3 phase.
 
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