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outlawspeeder
12-23-2016, 09:57 AM
I just got my 1st Surface Grinder but is only came with one balance Wheel Adapter. I am looking to get a 2nd or third adapter to allow quick swaps of a wheel.

So are all the mounts standard? Am I better to build my own using my current adapter as a pattern?


http://www.ebay.com/itm/F320-GRINDING-WHEEL-ADAPTER-2420-0320-/351884852759?hash=item51edf8be17:g:bMYAAOSw2GlXK5B 4

http://www.ebay.com/itm/F350-TATUNG-OKUMA-STYLE-GRINDING-WHEEL-ADAPTER-2420-0350-/231688453389?hash=item35f1b53d0d:g:FkgAAOSwiLdV9v6 C

easymike29
12-23-2016, 11:10 AM
Find your grinder here.

http://wmsopko.com/adapters.htm

Gene

outlawspeeder
12-23-2016, 11:52 AM
Not found on the page:


Acer Supra 618 Surface grinder

I had no clue there were so many types? WOW. I think I'll end up building my own before I am done.

JoeLee
12-23-2016, 12:54 PM
Sopko doesn't make hubs for every machine out there. Most of the small machines are a 1" taper but I've found that there can be some variance from that standard and the slightest bit means trouble.

The other thing is I don't like popping the hub off the taper every time I want to change wheels. On my KO Lee it's a PIA to try and get one hand behind the column and down below the motor mount to hold the spindle tail with a wrench and at the same time try and reach the front of the spindle with another wrench.
I came up with a better system, almost done with it.


JL...............

Andre3127
12-23-2016, 12:58 PM
Standard surface grinder tapers are 7 degrees per side and 1" major diameter.

They can be easily made, just don't forget you need left hand threads which probably means you need to single point internal threads.

lakeside53
12-23-2016, 01:03 PM
..and... on some the thread is non-standard.. like my Brown and Sharpe. Call Sopko... they will likely have an adapter even if they don't list your machine.

RWO
12-23-2016, 01:05 PM
In my 30+yrs. of experience, I have never needed to balance a wheel for my 6x18 Boyar-Schultz. I have used only 3 or 4 Norton wheels over that time, so I cannot say about other brands. BTW, the Norton 5SG wheels are superb.

RWO

outlawspeeder
12-23-2016, 01:28 PM
Used one in class 30 years ago. I would assume that balancing to mount would be needed per stone. The biggest rule I was taught for Surface grinders was CLEAN everything before mounting. One speck of dust is bad.

Tapper mount allows remounting to the same tolerance each time. Un-mounting the stone means resurfacing a stone each remount.

Andre3127
12-23-2016, 03:05 PM
I have a DoAll 612 size machine, and with 150 grit wheels I found balancing to be the only thing that would lead to good finishes especially in soft steels.

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Chris Evans
12-23-2016, 03:19 PM
Andre3127. I would think with soft steels you would be better off with 46 or 60 grit wheels. I only use 150/180 to pick out sharp corners or hold a fancy shape when form grinding. The high grit number wheels can tend to burn the surface. Dressing technique is essential.

JoeLee
12-23-2016, 04:02 PM
Used one in class 30 years ago. I would assume that balancing to mount would be needed per stone. The biggest rule I was taught for Surface grinders was CLEAN everything before mounting. One speck of dust is bad.

Tapper mount allows remounting to the same tolerance each time. Un-mounting the stone means resurfacing a stone each remount. Wheels require frequent dressing anyway, so what's the big deal??

JL.....................

JoeLee
12-23-2016, 04:06 PM
Just about every wheel I have ever had was out of balance, some more than others and by quite a bit.
Rarely do I get a wheel that is in perfect balance.

JL..................

http://i911.photobucket.com/albums/ac317/JoeLee09/Balancing%20Grinding%20Wheels/Image029_zps0clj4rcf.jpg (http://s911.photobucket.com/user/JoeLee09/media/Balancing%20Grinding%20Wheels/Image029_zps0clj4rcf.jpg.html)

outlawspeeder
12-23-2016, 10:54 PM
JoeLee
Are the rods on the balancing tool hardened? Ground? It looks shop made?

JoeLee
12-24-2016, 12:06 AM
The balancing stand rails and the arbor are 5/8" hardened and ground. Supposed to be straight within .001 per ft. The rails are 5" between posts. The 4 posts are 1" dia. SS.
Yes, shop made. Still working on the hubs.

JL...................

Forrest Addy
12-24-2016, 04:35 AM
They'e called "hubs" or "wheel hubs"

Here's a DIY wheel hub video in two parts

https://www.youtube.com/watch?v=N9_7XvLFcNM

https://www.youtube.com/watch?v=dLEbaRqk9RU

Making grinding wheel hubs is mostly simple lathe work but Stefan has laid the process out step by step to aid the noob.

A balancing frame and balancing arbor is not big deal to make but it has to be done accurately so the frame edges are straight and in the same plane and the arbor is straight and the journals cylindrical. You also need hard surfaces so they will roll freer.

Make a half dozen including a hub for 7/8" dia wheel bores with large flanges for mounting cutting disks

JoeLee
12-24-2016, 09:03 AM
He did a nice job making all those hubs, but they aren't balancing hubs.
I have a little different design I came up with. Since I'm not going to be popping the hub off the spindle I'm going to use a PVC bushing to hold the balancing hub to the wheel during balancing. My hubs will have an index mark on them which I will align with a mark on the wheel, so once balanced I can remove the PVC bushing and transfer both the wheel and hub to the machine. Almost done with this project.

JL...............

http://i911.photobucket.com/albums/ac317/JoeLee09/Balancing%20Grinding%20Wheels/Image017_zps2tgk1ofr.jpg (http://s911.photobucket.com/user/JoeLee09/media/Balancing%20Grinding%20Wheels/Image017_zps2tgk1ofr.jpg.html)

http://i911.photobucket.com/albums/ac317/JoeLee09/Balancing%20Grinding%20Wheels/Image019_zpsnpyoza6w.jpg (http://s911.photobucket.com/user/JoeLee09/media/Balancing%20Grinding%20Wheels/Image019_zpsnpyoza6w.jpg.html)

Jaakko Fagerlund
12-24-2016, 03:08 PM
He did a nice job making all those hubs, but they aren't balancing hubs.
What he built are wheel adapters, but with just a little modification could be used for balancing (unless you just modify the wheel itself).

What you've done is not a balancing arbor. In a proper system you mount your wheel on the wheel adapter in a proper manner, take off the balancing weights, dress the wheel, pop it off and pop it in the balancing arbor and balance it, reinstall in the machine, dress and use. The wheel never comes off the adapter unless you need to change it or rebalance it. No bushings, no extra steps and no index marks.

Andre3127
12-24-2016, 06:36 PM
Andre3127. I would think with soft steels you would be better off with 46 or 60 grit wheels. I only use 150/180 to pick out sharp corners or hold a fancy shape when form grinding. The high grit number wheels can tend to burn the surface. Dressing technique is essential.
I agree 100%, and DOC is limited to about half a thou.

My grinder came with three of those wheels, I just haven't ordered any coarser wheels yet....However there is a 46J wheel in my McMaster order screen.



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