minerjohn
starting to shine!
The wild bunch!
Member since May 2008
Posts: 43
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Post by minerjohn on Jul 5, 2010 12:05:44 GMT -5
I recently picked up an OLD Highland Park model E12 combo unit. It has two grinding wheels on the arbor and a 6" trim saw. It runs like a dream. I'm curious if I can replace the shaft and outfit this with galaxy/nova type wheels? I have room for 4 maybe 5 wheels. I'd have to redo the drip system a little bit. Probably different bearings. It's a really cool old machine. Anybody undertake something like this or should I leave it like it is and build a different unit for the finer grit wheels? Thanks.
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Post by johnjsgems on Jul 5, 2010 12:52:15 GMT -5
You don't need a new shaft to use Galaxy/Nova wheels. You need telescopic bushings to adapt to your shaft size. People commonly add more wheels and just add water fittings. In the old days they had 100 and 220 wheels for the most part. I never understood why all the manufacturers placed the wheels so close to sides and left so much room between wheels. I guess they were more concerned with cross contamination than wheel clearance for larger pieces. Every HP I've seen had standard, off the shelf bearings so pretty easy to rebuild if needed.
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Post by johnjsgems on Jul 5, 2010 12:55:31 GMT -5
By the way, since the wheels are between the bearings you ave to remove the outer bearing to replace the wheels. I would use all hard wheels (maybe 80, 220, 600) sintered if possible, Galaxy if not. Nova wheels would wear out faster. I'd use Novas on an arbor or other unit with easily changed wheels.
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Post by jakesrocks on Jul 5, 2010 13:00:12 GMT -5
What diameter is the shaft ? You can get different sized shaft adapters for Galaxy & Nova wheels. You may not have to replace the shaft. If it's dirty and rough. Take the hood and existing wheels off. Turn the machine on, and clean as much crud off the shaft as possible with a wire brush. Then with the machine still running, polish the shaft with fine grit sandpaper. I clean the shafts on my Genie on a regular basis, and coat them with automotive paste wax to prevent rusting. Highland Park made very good equipment, and you may not have to replace the bearings at all. If you should need to replace something, contact Diamond Pacific. They bought all of H.P.'s patterns, and many of their spare parts. They may have what you need. Don
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Post by docone31 on Jul 5, 2010 13:15:48 GMT -5
Rather than going with Galaxy wheels, they need replacement rapidly, I would go with (1) diamond wheel, and (1) flexible rubber wheel. The rubber wheel can have replacement belts changed out for grit. Mine runs 100grit diamond, 440, 880, 1200 and 3200 belts. I swap out to change grit sequence.
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Post by johnjsgems on Jul 5, 2010 17:32:30 GMT -5
docone31, Galaxy Wheels are diamond wheels (nickle alloy plated heavy steel rings pressed over glass-filled polyester core). The drum would not be a good choice because he would have to remove his right side bearing every time he changed belts. Unless there is room on far right side not shown in picture.
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minerjohn
starting to shine!
The wild bunch!
Member since May 2008
Posts: 43
|
Post by minerjohn on Jul 6, 2010 7:19:11 GMT -5
I'll check the shaft size. It looks like 1-1/8 or 1-1/4 just by looking at it. Whatever wheels are put on pretty much have to stay. There's no room on the ends to swap belts on the drums. That shaft is one piece and runs all the way over and runs the saw blade also. I'll measure and see what I come up with. Thanks ya'll.
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Post by johnjsgems on Jul 6, 2010 8:28:31 GMT -5
I'll bet you a bunch of wheel bushings it isn't 1-1/8" or larger. The saw blade will be 5/8". You may be seeing spacers over a 5/8" shaft between the wheels. Pull the saw table and you should see a little bit of the shaft.
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Post by rockmanken on Jul 6, 2010 8:50:00 GMT -5
I have an E-10 just like it and it has 5/8" shaft with larger shaft covers/spacers on it. I cut the shaft between the saw and the grinder and threw away the grinder and saved the bearing and added it to just have the saw. Works great. Had to cut a hole in the saw table for the bearing and also had to cut off part of the vise plate. Built a cover for the bearing and hole and siliconed it in place.(bearing between saw case and other fixed bearing.) Reason I did this is because the wheels were froze onto the shaft and wouldn't come off. Broke the wheels off with a hammer. Now they make great dressing sticks for my saw blades.
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