Belt driven arbor/bench grinder

[GarageGuy89]

Looking to find a belt driven arbor for a bench grinder. I have a bunch of old motors from 1/4hp to 5hp.

Would be nice to hook up the 5hp ones for when I really need to get the grind on.

All I see are old vintage ones, do they make these anymore? I found some new arbors without any shielding or stands (basically just looks like an axle, but looking for more of an all in one thing, like the old vintage ones.

 

[Rick B.]

I've seen a few NOS ones but haven't seen any of current manufacture.

Seeing as how you want to build your own set up why not find an oldie and refurb it? Bringing back the dead is so much more fun then store bought.

I bought this one well used about 25 years ago and just rehabbed it a short while back.

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[PelicanPines]

Sixx... that is beautiful...

 

[Packard V8]

Been using a Dayton arbor with a 3/4 hp motor for forty years. These used to be very common, but with the advent of cheap Chicom bench grinders, I don't know anyone offering the good 5/8" arbor ball bearing units.

BTW, the arbors have a very small pulley, so match your motor RPM and motor pulley size carefully. A 3450 RPM motor and a large pulley could turn some wheels fast enough to explode.

jack vines

 

[Voi]

http://www.leevalley.com/US/Wood/page.aspx?p=32960&cat=1,43072,45939&ap=1

 

[wayne55]

I have bought those from Grizzly.

 

[lilredex]

You probably will only find old arbours as cheap grinders are everywhere these days. No need to spend big $$ as nobody seems to see their value.

Here are a few I bought locally for between $5 and $10 each. with motors. Some are still waiting under the bench, for their new life.

Anyone know who made the green one?? I have three of those no-namers.

 

[Voi]

I have bought those from Grizzly.

Forgot about them. They make a 3/4" heavy duty one that might be a good choice for the OP.

http://www.grizzly.com/products/3-4...026?utm_campaign=zPage&utm_source=grizzly.com

 

[Packard V8]

Yes, the Grizzly is maybe the best of the current bad lot. However, it's lame in that it only allows one working wheel, requires building a base.

jack vines

 

[454ragtop]

I have a nice vintage Craftsman with guards and tool rests I could part with if you don't find something.

 

[Rick B.]

^^^ That's a fine bit of potential right there.

 

[Z2V]

454Ragtop,
If OP does not bit on it I might be interested.

 

[Z2V]

I just put this together from a repurposed treadmill.
2hp buffing table.

 

[rsanter]

I have wanted to build my own.
My plan was to use two pillow block bearings to hold the shaft and then run the belt to the motor that I mount lower on the pedestal base.
This would give better access for polishing wheels and wire wheels

Bob

 

[Gizmosity]

I'm in the same boat as the OP. Been looking for a while for one that's not beat to a pulp for reasonable money.

I am also looking at big, BIG old industrial 3phase grinders that I can slow down with a VFD at auctions for cheap. I mainly use a grinder to grind a hollow on chisels and plane blades.

I've also looked at the arbors at Lee Valley and Grizzly. If you've ever had a grinding wheel explode while you're using it? I don't think you would be eyeballing those without a surround of some/any type for grinding anymore. Buffing...sure. Grinding? Not after that.

 

[exmaxima1]

]

BTW, the arbors have a very small pulley, so match your motor RPM and motor pulley size carefully. A 3450 RPM motor and a large pulley could turn some wheels fast enough to explode.

jack vines

Due to the small pulleys, a NOTCHED v-belt runs smoother and quieter. You can buy them cheap on the auction site.

 

[WxNerd2015]

I've seen a few NOS ones but haven't seen any of current manufacture.

Seeing as how you want to build your own set up why not find an oldie and refurb it? Bringing back the dead is so much more fun then store bought.

I bought this one well used about 25 years ago and just rehabbed it a short while back.

View media item 72865
View media item 72869

@Rick B. What is your recommendation on finding the tool rests, and more specifically the inserts for the end of the tool rest? I just came into a Dunlap 6600 for free that I am going to work on cleaning up and getting into full operation, but I would love to have the option of the old tool rests, but can't find anything on the inserts! The Dunlap 6600 I found turns freely and smoothly by hand and looks to be a nice option to restore and work much better than my cheap Harbor Freight 5" grinder that bogs down all the time! Also, any recommendation on motor or HP for the motor? Looking into some options right now, and figuring ~1725 rpm motor is good, and figuring somewhere around a 1/3-3/4 HP motor? Thanks in advance for any help!

 

[exmaxima1]

What size wheels are you planning to spin? A 6-inch wheel needs 3450 revs for optimum grinding of ferrous metals. Bigger wheels can go slower but try to maintain the same SFPM (about 5000) as that of a 6-inch wheel at 3450.

 

[WxNerd2015]

What size wheels are you planning to spin? A 6-inch wheel needs 3450 revs for optimum grinding of ferrous metals. Bigger wheels can go slower but try to maintain the same SFPM (about 5000) as that of a 6-inch wheel at 3450.

Yeah, thinking probably 6" diameter, though for a lot of what I do, it would probably be more wire wheels and buffing, but I do plan on doing a bit of grinding as well.