This question is of great interest to me. If, say, I has a 1500 lb
rated caster with a urethane wheel, would it deform under 800 lb
load, enough to make it troublesome to move. Thanks

i

Yes. Sitting for several months will definitely flat spot.

On 3/9/2010 3:47 PM, Ignoramus17831 wrote:
This question is of great interest to me. If, say, I has a 1500 lb
rated caster with a urethane wheel, would it deform under 800 lb
load, enough to make it troublesome to move. Thanks

i

Not in my experience. They are quite good at remaining round.
Steve

"Ignoramus17831" wrote in message ...
This question is of great interest to me. If, say, I has a 1500 lb
rated caster with a urethane wheel, would it deform under 800 lb
load, enough to make it troublesome to move. Thanks

i

On Mar 9, 2:47�pm, Ignoramus17831 ignoramus17...@NOSPAM.
17831.invalid wrote:
This question is of great interest to me. If, say, I has a 1500 lb
rated caster with a urethane wheel, would it deform under 800 lb
load, enough to make it troublesome to move. Thanks

i

How about using whatever casters, but, after placing the mill use the
"step on feet" that will take the weight off the casters until you
need to move the mill again? I do this with a nice heavy duty
castered table that I have.

Bob AZ

"Bob AZ" wrote in message
...
On Mar 9, 2:47�pm, Ignoramus17831 ignoramus17...@NOSPAM.
17831.invalid wrote:
This question is of great interest to me. If, say, I has a 1500 lb
rated caster with a urethane wheel, would it deform under 800 lb
load, enough to make it troublesome to move. Thanks

i

How about using whatever casters, but, after placing the mill use the
"step on feet" that will take the weight off the casters until you
need to move the mill again? I do this with a nice heavy duty
castered table that I have.

My table saw is like that. I've got a similar base form my radial arm saw.
Never thought about one for a mill.

If they are made for wheels, they are tough. Prober tables in semi-conductor
houses and other equipment are mounted on them - cleaner.

I have a heavy tube table with my large bench vice on concrete and they roll
for the past 9 years. Before that the table was in a Fab line.

Martin

Ignoramus17831 wrote:
This question is of great interest to me. If, say, I has a 1500 lb
rated caster with a urethane wheel, would it deform under 800 lb
load, enough to make it troublesome to move. Thanks

i

Ignoramus17831 wrote:
This question is of great interest to me. If, say, I has a 1500 lb
rated caster with a urethane wheel, would it deform under 800 lb
load, enough to make it troublesome to move. Thanks

i

Probably. The easy solution is to use them. Then put some blocks under
the base. That would be better than using just the casters because the
mill would also be more stable than on wheels.

--
Steve W.

On Tue, 09 Mar 2010 15:47:24 -0600, Ignoramus17831
wrote:

This question is of great interest to me. If, say, I has a 1500 lb
rated caster with a urethane wheel, would it deform under 800 lb
load, enough to make it troublesome to move. Thanks

They all flat spot to a degree. How much all depends on the
durometer of the caster, the load, the temperature, and time... I've
seen the tires deform so badly they crack and fall off, and now you
have a cast iron caster.

Several solutions out there, pick one. The easiest would be to use
the urethane casters on a sub-frame, and put crank-down landing jacks
or levelling screw jacks or floor locks or leveling mount "Bun Feet"
(pick one) at the four corners to take most of the load off the
casters when parked.

The casters might flat-spot a bit if they have a little weight left
on them, but it won't be a huge divot.

I'd research air bearings if you've got a big chunk of plate steel -
leave it under the tool permanently and have screw-down leveling feet,
when you need to move it just hook up the air chuck. I know it will
work, but there must be finer points to it.

-- Bruce --