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Old 06-15-2013, 08:12 PM
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Default Old Style Grinder

Picked up an old style babbit bearing grinder base to day at auction for $10. Disassembled it and the babbit bearings look real good. The base has 2 1/2 cast in but no name. The paper shims to adjust the babbit bearings were marked Pittsburg. It has the old style brass grease cups where you fill them with grease, turn down periodically to pressure grease into the bearings.

The base is in the derusting tank for a couple of days, then the small parts. It has a flat belt drive pulley and even came with the old leather belt. Belt is pretty shot. Plan to use a 2hp motor to drive it and install some 2" wide X 8" coarse stones. Thinking I can use 2-3 V belts and let them run on the flat pulley?? Let me know if this sounds feasible to you.

It has a 1/2" tapped hole to mount a tool rest which is missing. I'll have to fab one. May have to tap another hole to get the tool rest to stay stable.

Ought to make a great grinder for hogging off metal. The trick to reassembly is to find some layered brass shim stock to get the bearings adjusted just right. From memory, I seem to believe the bearing caps should be tightened snugly and the shaft should easily rotate by hand. Too tight, and it needs another couple of thousands more shim stock???

More pics in a few days of the reassembly and motor setup.
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Old 06-15-2013, 08:16 PM
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Last pics.
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Old 06-15-2013, 08:43 PM
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Nice ol grinder!!
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Old 06-16-2013, 12:49 AM
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Chris, that is a beautiful hunk of iron. You should be able to swing a 12" stone with that and babbit will outlast most any bearing.
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Old 06-16-2013, 01:18 AM
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Maybe it's just me but I do have some reservations about that 3450 rpm motor.
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Old 06-16-2013, 07:24 AM
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i'm not sure how the V belts will run on the crowned flat pulley.
they may work just fine,but they will run to the side i bet.

I have a big flat belt drill press,needs a 2'' belt,those belts can be found,but damn they cost big bucks.
I'm using a 2'' wide ratchet strap,its working fine and cheap too!
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Old 06-16-2013, 07:34 AM
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Ohh,forgot to say thats a nice grinder base.
Could you put a flat plate on one end and use sandpaper sticky discs on it?
I love my 12'' disc sander...
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Old 06-16-2013, 07:46 AM
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Great looking old grinder....

Try Tandy Leather for those 2" leather belts--72" long https://www.tandyleatherfactory.com/.../4752-197.aspx

Still pricey though...
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Old 06-16-2013, 08:44 AM
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Very nice, that has to qualify for some minor suckage...
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Old 06-16-2013, 08:59 AM
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Some people use serpentine belts. A couple of sources for belting:

Baltimore Belting http://www.baltimorebelting.com/

http://www.leatherdrivebelts.com/
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