Vince Pitelka on mon 15 mar 04
Ordinary pillow lock or flange bearings will work just fine for a banding
wheel, even a very large one. They are designed to take a great deal of
thrust. Just make sure that the bearing collar is locked securely onto the
shaft. There are several different systems for this, and it would be best
to ask the bearing supplier to tell you which system can absorb the most
thrust.
There was a suggestion to use tapered roller bearings, but that would be
gross overkill for such a project. They are used on much larger machinery,
and would be unnecessary for this project.
In the plans I used to build my pugmill, Harry Davis recommended using a
tapered thrust bearing to absorb the thrust load of the auger shaft. I was
working as a mechanic at the time, and I had a lot of experience with all
sorts of bearings in different applications, and it did not seem like a
thrust bearing would be necessary. At the local industrial supplier I
checked the thrust load for the 1 15/16" flange bearings I was using, and
they had a maximum thrust load of a couple of tons. No need at all for a
thrust bearing there, and far less in your application.
Best wishes -
- Vince
Vince Pitelka
Appalachian Center for Craft
Tennessee Technological University
1560 Craft Center Drive, Smithville TN 37166
Home - vpitelka@dtccom.net
615/597-5376
Office - wpitelka@tntech.edu
615/597-6801 x111, FAX 615/597-6803
http://iweb.tntech.edu/wpitelka/
http://www.tntech.edu/craftcenter/
Ditmar on mon 15 mar 04
Most of your weight will be in the downward direction. Lateral forces =
will be from your good ol' hands.
Look into using tapered shaft bearings and also thrust bearings.
Depending on the weight of the clay .... one or the other will suffice.
Tapered shaft are great, since they are used in brakes, etc. for =
vehicles ...that means cheaper and more available. BTW......since =
they're tapered they are self centering and won't ruin your hairdo. =20
XXX D
Runyan,Jacob on tue 16 mar 04
I am going to agree with Vince here. Tapered Roller
bearings are overkill, and more difficult to work with.
The nice thing about pillow block and flange bearings are
simply the ease of mounting. You can bolt them into any
surface. In order to use a tapered roller bearing, you
will have to have a machined bore to accept the bearing
race. It will also be important to keep slip from dripping
into the race...it will ruin your bearings very quickly.
My first wheel had a pillowblock that was not really
sealed all that well, after about an hour, it would be
entirely loaded with slip...after a year, the bearing was
fine.
I guess it really depends on what you want to do with your
wheel. If you are looking for something that is
functional, you can scrap together a wheel really cheap.
If you want something that is going to last hundreds of
years and still look beautiful, go for the hardwood frame
with custom machined parts. I guess it all depends on how
quickly you wish to start throwing :)
-Jacob
Ordinary pillow lock or flange bearings will work just
fine for a banding
wheel, even a very large one. They are designed to take a
great deal of
thrust. Just make sure that the bearing collar is locked
securely onto the
shaft. There are several different systems for this, and
it would be best
to ask the bearing supplier to tell you which system can
absorb the most
thrust.
There was a suggestion to use tapered roller bearings, but
that would be
gross overkill for such a project. They are used on much
larger machinery,
and would be unnecessary for this project.
In the plans I used to build my pugmill, Harry Davis
recommended using a
tapered thrust bearing to absorb the thrust load of the
auger shaft. I was
working as a mechanic at the time, and I had a lot of
experience with all
sorts of bearings in different applications, and it did not
seem like a
thrust bearing would be necessary. At the local industrial
supplier I
checked the thrust load for the 1 15/16" flange bearings I
was using, and
they had a maximum thrust load of a couple of tons. No
need at all for a
thrust bearing there, and far less in your application.
Best wishes -
- Vince
Vince Pitelka
Appalachian Center for Craft
Tennessee Technological University
1560 Craft Center Drive, Smithville TN 37166
Home - vpitelka@dtccom.net
615/597-5376
Office - wpitelka@tntech.edu
615/597-6801 x111, FAX 615/597-6803
http://iweb.tntech.edu/wpitelka/
http://www.tntech.edu/craftcenter/
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