Belt grinder plans?

[QSIMDO]

Homemade tools.net might have some. I've been looking at building a belt sander for a while (2x48 probably) and I've just found a lot of pictures to go from. Most people seem to work with the material and skills that they have, so every one I've seen looks different.

I was surprised that didn't immediately pop up when I was searching.
I'll go direct.

[MattiJ]

Making your own "plans" shouldn't be rocket science, right?

Draw with E7018 and iterate with 9" rotary eraser as they say

Maybe you can copy some ideas out of these:

https://www.youtube.com/watch?v=Qa8NL9d3ApQ

https://www.youtube.com/watch?v=LNKhVJpKNK8

[QSIMDO]

Making your own "plans" shouldn't be rocket science, right?

Draw with E7018 and iterate with 9" rotary eraser as they say

Maybe you can copy some ideas out of these:

https://www.youtube.com/watch?v=Qa8NL9d3ApQ

https://www.youtube.com/watch?v=LNKhVJpKNK8

I figure why engineer what has to be perfected by now?
I'll be victim of the mistakes of someone way too far away to yell at.
If I design it I'll just waste time standing there cursing myself out.

[Captain K]

In Randolph' Book

There's a pretty good plan for an upright belt grinder in on of Randolph Bulgin's books, maybe the green one. It looks pretty straight forward and should scale up good too. I think his is only 2"

[Glug]

It is interesting that 6" builds are so uncommon. I appreciate not wanting to re-invent the wheel. There are plenty of industrial examples. Studying photos of those builds would probably be very worthwhile. Request the operator manuals to see how the belt adjustment mechanisms work.

How about narrowing the requirements?

This will be a 2 wheel grinder
I assume you want to grind on one or both the wheel faces?
And grind on a platten?
Will the long axis be vertical or horizontal?
Will the face of the belt be vertical or horizontal?
Will it pivot between horiz and vert?

How you adjust belt alignment on a heavy duty machine seems like one of the big questions.

Are you thinking of something like this?

https://feintools-online.com/fein-grinders/fein-belt-grinders.html

[Paul Alciatore]

Yes, it is amazing how much HP a belt sander needs. It seems that sandpaper has a lot of friction. Fancy that!

I disagree with this. I have a 1.5 horse on a 6" belt and can stall it. 3 hp sounds about right.

lg
no neat sig line

[QSIMDO]

It is interesting that 6" builds are so uncommon. I appreciate not wanting to re-invent the wheel. There are plenty of industrial examples. Studying photos of those builds would probably be very worthwhile. Request the operator manuals to see how the belt adjustment mechanisms work.

How about narrowing the requirements?

This will be a 2 wheel grinder
I assume you want to grind on one or both the wheel faces?
And grind on a platten?
Will the long axis be vertical or horizontal?
Will the face of the belt be vertical or horizontal?
Will it pivot between horiz and vert?

How you adjust belt alignment on a heavy duty machine seems like one of the big questions.

Are you thinking of something like this?

https://feintools-online.com/fein-gr...-grinders.html

Oh...Malwarebytes doesn't like that site!
But, yes, along those lines, vertical axis, etc.
What's hindering my creativity is that it's a C face motor with no provision for a foot.
That's my excuse anyway.

[MillNut]

I'm currently building this grinder. Was originally supposed to go on my Craftsman 1/3hp grinder. That didn't work out![emoji33] I have a 1 hp Leeson that came with my lathe that I never had a use for until now. I modified my Inventor model for the mast to fit on the Leeson. Also had to turn up a new lower driver. Od is just under 6". Went on vacation and haven't got back on it yet. Will shortly though.

I did have to make a new front cover for the motor so the mast would bolt on. Also in the pics, the belt tensioner needs to have a 1/4" deep slot milled for it to nest in.I realize this is for a2" x 48" belt, however I think the design can be adjusted to accommodate a wider belt. I do have a Inventor 2014 model of what I did.


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[MillNut]

Couple pics of the front cover:


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[mattthemuppet]

dang, that's some lovely work, especially the new end bell for the motor. I'm particularly interested in the belt tensioner - is the doodad with the knurled brass wheel for adjusting belt tension or tracking? Those 2 things are what I've been thinking about the most, the rest is pretty similar to your set up, just not direct mount.

[QSIMDO]

H. Crap, MillNut, you're not screwin' around there!
That bell end is worth 5 times more than the motor.
If you wanted to bum me out you scored heavy...well, no, not too bad because my motor has no foot.

Draw it up for a face mount and I'll build it!

[Tundra Twin Track]

Very nice work ,is the vertical 3/4" plate?

[velocette]

Hi
Plenty of grunt fort he job in hand to drive a 6"pulley = 5654 feet per minute or 8" pulley = 7500 feet per minute.
Crown the drive pulley to keep the band running on centre and a parallel Idler with a tracking mechanism.

Eric

[MattiJ]

The stock is in my lathe, ready for turning.

Reason I asked is that solid aluminium/steel contact wheel sucks with many of the belts. Rubber contact wheel is the way to go but making one is not trivial task and store bought contact wheels are crazy expensive at least around here.

[lakeside53]

A quality 2x10 inch wheel with balanced hub was less than $200 IIRC

One of the cheaper solutions for a contact wheel is to buy one as a spare part from Grizzly.

I hate to think what a 6x10 inch would cost