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Do urethane caster wheels deform over time under load
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 |
Do urethane caster wheels deform over time under load
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 |
Do urethane caster wheels deform over time under load
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 |
Do urethane caster wheels deform over time under load
On 2010-03-10, Buerste wrote:
"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 What color are they? The softer Urethane will deform but the harder ones will not. In die work, Urethane is color coded to hardness but I'm not sure if is an adhered to standard and may even vary per mfgr. At the risk of causing a serious consternation, I want to confess that I am going to make a base for this mill on casters. I will need to move it about quite a bit. We are likely doing a house addition this year and the mill will move into the new shop. I can always put 2x4s under the base for stable placement. Anyhow, I have these Colson 1500 lbs casters with dark red urethane wheels, and I want to know if they would become unusable if I let the mill sit on them for a week or two. i |
Do urethane caster wheels deform over time under load
On Mar 9, 6:28*pm, Ignoramus17831 ignoramus17...@NOSPAM.
17831.invalid wrote: On 2010-03-10, Buerste wrote: "Ignoramus17831" wrote in message m... 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 What color are they? *The softer Urethane will deform but the harder ones will not. *In die work, Urethane is color coded to hardness but I'm not sure if is an adhered to standard and may even vary per mfgr. At the risk of causing a serious consternation, I want to confess that I am going to make a base for this mill on casters. I will need to move it about quite a bit. We are likely doing a house addition this year and the mill will move into the new shop. I can always put 2x4s under the base for stable placement. Anyhow, I have these Colson 1500 lbs casters with dark red urethane wheels, and I want to know if they would become unusable if I let the mill sit on them for a week or two. i Try pressing your thumb nail into the urethane. My guess is: If you can see an indentation, they will get a flat spot. If you can't, they won't. Paul |
Do urethane caster wheels deform over time under load
In article ,
Ignoramus17831 wrote: On 2010-03-10, Buerste wrote: "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 What color are they? The softer Urethane will deform but the harder ones will not. In die work, Urethane is color coded to hardness but I'm not sure if is an adhered to standard and may even vary per mfgr. At the risk of causing a serious consternation, I want to confess that I am going to make a base for this mill on casters. I will need to move it about quite a bit. We are likely doing a house addition this year and the mill will move into the new shop. I can always put 2x4s under the base for stable placement. Why can't you use casters with cast iron wheels? These will *not* deform. Anyhow, I have these Colson 1500 lbs casters with dark red urethane wheels, and I want to know if they would become unusable if I let the mill sit on them for a week or two. I would ask Colson, but I would be suspicious of anything non-metallic. Joe Gwinn |
Do urethane caster wheels deform over time under load
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 |
Do urethane caster wheels deform over time under load
Joseph Gwinn wrote: In article , Ignoramus17831 wrote: On 2010-03-10, Buerste wrote: "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 What color are they? The softer Urethane will deform but the harder ones will not. In die work, Urethane is color coded to hardness but I'm not sure if is an adhered to standard and may even vary per mfgr. At the risk of causing a serious consternation, I want to confess that I am going to make a base for this mill on casters. I will need to move it about quite a bit. We are likely doing a house addition this year and the mill will move into the new shop. I can always put 2x4s under the base for stable placement. Why can't you use casters with cast iron wheels? These will *not* deform. Anyhow, I have these Colson 1500 lbs casters with dark red urethane wheels, and I want to know if they would become unusable if I let the mill sit on them for a week or two. I would ask Colson, but I would be suspicious of anything non-metallic. Joe Gwinn Beyond using solid metal wheels, also look to heavy duty screw down leveling feet. I think Surplus Center has/had some levelers, and if not, the usual sources should. If you take the weight off the wheels when the mill is parked, caster flat spotting won't be an issue. |
Do urethane caster wheels deform over time under load
On 2010-03-10, Joseph Gwinn wrote:
In article , Ignoramus17831 wrote: On 2010-03-10, Buerste wrote: "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 What color are they? The softer Urethane will deform but the harder ones will not. In die work, Urethane is color coded to hardness but I'm not sure if is an adhered to standard and may even vary per mfgr. At the risk of causing a serious consternation, I want to confess that I am going to make a base for this mill on casters. I will need to move it about quite a bit. We are likely doing a house addition this year and the mill will move into the new shop. I can always put 2x4s under the base for stable placement. Why can't you use casters with cast iron wheels? These will *not* deform. I can, and I have them in my mcmaster cart. But I already have the colson casters. Anyhow, I have these Colson 1500 lbs casters with dark red urethane wheels, and I want to know if they would become unusable if I let the mill sit on them for a week or two. I would ask Colson, but I would be suspicious of anything non-metallic. As am I. I also think that metal wheels would be easier to move with a load this heavy. i |
Do urethane caster wheels deform over time under load
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 |
Do urethane caster wheels deform over time under load
"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. |
Do urethane caster wheels deform over time under load
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. |
Do urethane caster wheels deform over time under load
"Ignoramus17831" wrote in message ... On 2010-03-10, Joseph Gwinn wrote: In article , Ignoramus17831 wrote: On 2010-03-10, Buerste wrote: "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 What color are they? The softer Urethane will deform but the harder ones will not. In die work, Urethane is color coded to hardness but I'm not sure if is an adhered to standard and may even vary per mfgr. At the risk of causing a serious consternation, I want to confess that I am going to make a base for this mill on casters. I will need to move it about quite a bit. We are likely doing a house addition this year and the mill will move into the new shop. I can always put 2x4s under the base for stable placement. Why can't you use casters with cast iron wheels? These will *not* deform. I can, and I have them in my mcmaster cart. But I already have the colson casters. Anyhow, I have these Colson 1500 lbs casters with dark red urethane wheels, and I want to know if they would become unusable if I let the mill sit on them for a week or two. I would ask Colson, but I would be suspicious of anything non-metallic. As am I. I also think that metal wheels would be easier to move with a load this heavy. i Please don't say you aren't going to level it! |
Do urethane caster wheels deform over time under load
In article ,
Ignoramus17831 wrote: On 2010-03-10, Joseph Gwinn wrote: In article , Ignoramus17831 wrote: On 2010-03-10, Buerste wrote: "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 What color are they? The softer Urethane will deform but the harder ones will not. In die work, Urethane is color coded to hardness but I'm not sure if is an adhered to standard and may even vary per mfgr. At the risk of causing a serious consternation, I want to confess that I am going to make a base for this mill on casters. I will need to move it about quite a bit. We are likely doing a house addition this year and the mill will move into the new shop. I can always put 2x4s under the base for stable placement. Why can't you use casters with cast iron wheels? These will *not* deform. I can, and I have them in my mcmaster cart. But I already have the colson casters. Anyhow, I have these Colson 1500 lbs casters with dark red urethane wheels, and I want to know if they would become unusable if I let the mill sit on them for a week or two. I would ask Colson, but I would be suspicious of anything non-metallic. As am I. I also think that metal wheels would be easier to move with a load this heavy. The other problem with wheels (especially if made of cast iron) is that the mill may move around in response to machining motions. I like the suggestions of having a caster plus a retractable solid foot of some kind at each corner. Mills are not as sensitive to leveling as lathes, but adjustability is nonetheless needed in at least one of the solid feet to handle floors that are not perfectly flat, or the mill may rock back and forth as machining proceeds, which would be really annoying. Joe Gwinn |
Do urethane caster wheels deform over time under load
On 2010-03-10, Joseph Gwinn wrote:
In article , Ignoramus17831 wrote: On 2010-03-10, Joseph Gwinn wrote: In article , Ignoramus17831 wrote: On 2010-03-10, Buerste wrote: "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 What color are they? The softer Urethane will deform but the harder ones will not. In die work, Urethane is color coded to hardness but I'm not sure if is an adhered to standard and may even vary per mfgr. At the risk of causing a serious consternation, I want to confess that I am going to make a base for this mill on casters. I will need to move it about quite a bit. We are likely doing a house addition this year and the mill will move into the new shop. I can always put 2x4s under the base for stable placement. Why can't you use casters with cast iron wheels? These will *not* deform. I can, and I have them in my mcmaster cart. But I already have the colson casters. Anyhow, I have these Colson 1500 lbs casters with dark red urethane wheels, and I want to know if they would become unusable if I let the mill sit on them for a week or two. I would ask Colson, but I would be suspicious of anything non-metallic. As am I. I also think that metal wheels would be easier to move with a load this heavy. The other problem with wheels (especially if made of cast iron) is that the mill may move around in response to machining motions. I like the suggestions of having a caster plus a retractable solid foot of some kind at each corner. Mills are not as sensitive to leveling as lathes, but adjustability is nonetheless needed in at least one of the solid feet to handle floors that are not perfectly flat, or the mill may rock back and forth as machining proceeds, which would be really annoying. Once I get the mill in place, I will put 2x4s under the base. i |
Do urethane caster wheels deform over time under load
Ignoramus5886 fired this volley in
: Once I get the mill in place, I will put 2x4s under the base. That's not the best base, unless the mill is heavy enough to partially crush the wood. In the most exact sense, you'll never get it to sit tight on the floor without a three-point or four-point-and-one-adjustable stance. LLoyd |
Do urethane caster wheels deform over time under load
Ignoramus5886 fired this volley in
: Once I get the mill in place, I will put 2x4s under the base. I should have added... I have a #2 Cincy horizontal mill with a BP "M" head. It's on roller bars, just because I've never really decided where it should be. It doesn't "rock" because the floor is quite level where it sits, but when I'm using a big out-of-balance tool at a fairly low spindle speed, the 3200lb machine actually rolls fore-and-back about 1/16". It's not a problem, but a little disconcerting. You don't so much see it as feel it when you're on the dials. LLoyd |
Do urethane caster wheels deform over time under load
On 2010-03-10, Lloyd E. Sponenburgh lloydspinsidemindspring.com wrote:
Ignoramus5886 fired this volley in : Once I get the mill in place, I will put 2x4s under the base. That's not the best base, unless the mill is heavy enough to partially crush the wood. In the most exact sense, you'll never get it to sit tight on the floor without a three-point or four-point-and-one-adjustable stance. Oh, it will crush the wood in 2x4s, for sure. i |
Do urethane caster wheels deform over time under load
On Tue, 09 Mar 2010 20:28:39 -0600, the infamous Ignoramus17831
scrawled the following: On 2010-03-10, Buerste wrote: "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 What color are they? The softer Urethane will deform but the harder ones will not. In die work, Urethane is color coded to hardness but I'm not sure if is an adhered to standard and may even vary per mfgr. At the risk of causing a serious consternation, I want to confess that I am going to make a base for this mill on casters. I will need to move it about quite a bit. We are likely doing a house addition this year and the mill will move into the new shop. I can always put 2x4s under the base for stable placement. Anyhow, I have these Colson 1500 lbs casters with dark red urethane wheels, and I want to know if they would become unusable if I let the mill sit on them for a week or two. I doubt it, but you can ask them easily enough: http://www.colsoncaster.com/ I installed pinkish-red bushings for the leaf springs on my F-150 which didn't deform at all. Good schtuff, Maynard. -- There is no such thing as limits to growth, because there are no limits to the human capacity for intelligence, imagination, and wonder. -- Ronald Reagan |
Do urethane caster wheels deform over time under load
On Wed, 10 Mar 2010 07:59:51 -0600, the infamous Ignoramus5886
scrawled the following: On 2010-03-10, Lloyd E. Sponenburgh lloydspinsidemindspring.com wrote: Ignoramus5886 fired this volley in : Once I get the mill in place, I will put 2x4s under the base. That's not the best base, unless the mill is heavy enough to partially crush the wood. In the most exact sense, you'll never get it to sit tight on the floor without a three-point or four-point-and-one-adjustable stance. Oh, it will crush the wood in 2x4s, for sure. And ensure a level of within 1/4". -- There is no such thing as limits to growth, because there are no limits to the human capacity for intelligence, imagination, and wonder. -- Ronald Reagan |
Do urethane caster wheels deform over time under load
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 -- |
Do urethane caster wheels deform over time under load
On 2010-03-10, Ignoramus17831 wrote:
On 2010-03-10, Buerste wrote: "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 What color are they? The softer Urethane will deform but the harder ones will not. In die work, Urethane is color coded to hardness but I'm not sure if is an adhered to standard and may even vary per mfgr. At the risk of causing a serious consternation, I want to confess that I am going to make a base for this mill on casters. Unless you provide an alternate support for it when it is in use, you are in for some excitement. With servo motors, you will find that a rapid move in the X or Y axis will cause a corresponding move of the base of the mill -- related to the mass of the main body of the mill, vs that of the table, vise, and workpiece on it. At first, the speed of a rapid move can scare you. If you were using the older stepper motor version, it can't go fast enough to do much of this, but servos are *fast*. I will need to move it about quite a bit. We are likely doing a house addition this year and the mill will move into the new shop. I can always put 2x4s under the base for stable placement. If you put them there (I would suggest 4x4s, since 2x4s on edge would be likely to topple if the motion of the tables was perpedicular to the 2" dimension. Anyhow, I have these Colson 1500 lbs casters with dark red urethane wheels, and I want to know if they would become unusable if I let the mill sit on them for a week or two. I really don't know about that. Hopefully, someone else will know about the dark red compound. Good Luck, DoN. -- Email: | Voice (all times): (703) 938-4564 (too) near Washington D.C. | http://www.d-and-d.com/dnichols/DoN.html --- Black Holes are where God is dividing by zero --- |
Do urethane caster wheels deform over time under load
On 2010-03-10, Joseph Gwinn wrote:
In article , Ignoramus17831 wrote: On 2010-03-10, Joseph Gwinn wrote: [ ... ] Why can't you use casters with cast iron wheels? These will *not* deform. I can, and I have them in my mcmaster cart. But I already have the colson casters. Anyhow, I have these Colson 1500 lbs casters with dark red urethane wheels, and I want to know if they would become unusable if I let the mill sit on them for a week or two. I would ask Colson, but I would be suspicious of anything non-metallic. As am I. I also think that metal wheels would be easier to move with a load this heavy. The other problem with wheels (especially if made of cast iron) is that the mill may move around in response to machining motions. I like the suggestions of having a caster plus a retractable solid foot of some kind at each corner. Amen! Mills are not as sensitive to leveling as lathes, but adjustability is nonetheless needed in at least one of the solid feet to handle floors that are not perfectly flat, or the mill may rock back and forth as machining proceeds, which would be really annoying. There is one reason for leveling the mill. The flow of coolant back to the reservoir can be quite sensitive to leveling. Enjoy, DoN. -- Email: | Voice (all times): (703) 938-4564 (too) near Washington D.C. | http://www.d-and-d.com/dnichols/DoN.html --- Black Holes are where God is dividing by zero --- |
Do urethane caster wheels deform over time under load
On 13 Mar 2010 05:47:53 GMT, "DoN. Nichols"
wrote: On 2010-03-10, Joseph Gwinn wrote: In article , Ignoramus17831 wrote: On 2010-03-10, Joseph Gwinn wrote: [ ... ] Why can't you use casters with cast iron wheels? These will *not* deform. I can, and I have them in my mcmaster cart. But I already have the colson casters. Anyhow, I have these Colson 1500 lbs casters with dark red urethane wheels, and I want to know if they would become unusable if I let the mill sit on them for a week or two. I would ask Colson, but I would be suspicious of anything non-metallic. As am I. I also think that metal wheels would be easier to move with a load this heavy. The other problem with wheels (especially if made of cast iron) is that the mill may move around in response to machining motions. I like the suggestions of having a caster plus a retractable solid foot of some kind at each corner. Amen! Mills are not as sensitive to leveling as lathes, but adjustability is nonetheless needed in at least one of the solid feet to handle floors that are not perfectly flat, or the mill may rock back and forth as machining proceeds, which would be really annoying. There is one reason for leveling the mill. The flow of coolant back to the reservoir can be quite sensitive to leveling. Enjoy, DoN. Makes me wonder what life as a machinist was like on the big WWII ships. I worked on one that was converted to a crab processing plant in Dutch Harbor, AK. It had a complete machine shop and I was told they could make damn near any part they'd need as long as they had the stock. This ship was permanently docked but it'd still list depending on how the loads were stowed down below. I have to assume it wouldn't be level underway. Well, perhaps akin to a broken clock being right twice a day anyway. Newb |
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