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I was fortunate to purchase this homemade ring roller from a local gentleman a few months back, and have really enjoyed using it. The rollers are for 1/2" square tubing, and I have also rolled EMT conduit, copper pipe and round steel tubing with no problems - until this weekend.
While rolling some 1/2" square steel tubing I managed to gall/strip the 5/8-11NC jack screw. If not clear in the pics, the tip of the screw is machined with a groove, that two roll pins capture and allow the screw to rotate within the steel draw bar that raises and lowers the center roller. Their is a steel threaded "cap" bar of steel that is threaded for the screw - which is now damaged along with the screw threads.The failure is all operator induced - no anti-seize on threads (would have helped?), trying to roll a 12" diameter ring (too tight?), etc.
The screw seems to have taken the majority of the damage, but I cannot screw a new 5/8-11NC into the cap, so there is some damage in it as well.The available repair options I can think of include:Run a 5/8-16NC tap through the cap and clean up the threads, machine a new screw with the correct end, and re-assemble and use.Ream/drill out the cap with a 21/32" bit and tap it to 3/4-10NC, then machine a new screw end to fit in the draw bar and use.Am I correct that anti-seize is a good idea in this application - or no?Any other thoughts on how to successfully repair this treasure?Thank you.Last edited by Shootr; 11-16-2020 at 02:56 PM.Yeswelder MIG-205DS(3) Angle Grinders at the ReadyJust a hobbyist trying to improve
Reply:Maybe part of the problem is that it should be Acme thread?Sent from my iPhone using Tapatalk:
Reply:Agree, acme thread for that application. I would get a close fitting acne bolt or/threaded rod ream those thread and weld appropriate nut on top or bottom. Added a spring for the return if you cannot machine the end. Though a grinder would be enough for that job.Been a sacrificial c-clamp would work and have a machine end.Probably no welding involved if you put the nut underneath.
Reply:Well, what you could do as a temp "fix" is to weld a coupling nut on top so you have all new threads and more threads to distribute the load over. That way you don't have to worry about cutting a larger size thread with taps you don't have on hand. Then, weld the broken off stub onto the end of the new threaded rod so you don't have to worry about turning the groove or anything. Wouldn't be hard to drill/file the threaded hole out to something bigger just so you have clearance for the bigger threaded shaft to pass through. As long as your weld is solid, it should be more than enough for a small roller like that.While you're at it, might I also suggest you increase the diameter of the roller axles to 3/4". Even when you're rolling small stuff, there's a lot of deflection in thin axles, making for lots of binding and rubbing in the wrong places. It'd be a pain to drill out all the rollers, but I think you'll like the performance better.
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Originally Posted by VaughnT
Well, what you could do as a temp "fix" is to weld a coupling nut on top so you have all new threads and more threads to distribute the load over. That way you don't have to worry about cutting a larger size thread with taps you don't have on hand. Then, weld the broken off stub onto the end of the new threaded rod so you don't have to worry about turning the groove or anything. Wouldn't be hard to drill/file the threaded hole out to something bigger just so you have clearance for the bigger threaded shaft to pass through. As long as your weld is solid, it should be more than enough for a small roller like that.While you're at it, might I also suggest you increase the diameter of the roller axles to 3/4". Even when you're rolling small stuff, there's a lot of deflection in thin axles, making for lots of binding and rubbing in the wrong places. It'd be a pain to drill out all the rollers, but I think you'll like the performance better.
Reply:Well if you don’t have any acme thread I would use a larger size fine thread and make sure it is good material not all thread. Look at a large puller they don’t use coarse thread never seize on the end too not just the threads
Reply:Just clean up what you have and keep it greased. No need to reinvent the wheel here. Yes acme threads would probably have served better, but my commercial ring roller has tapered threads. Clean the female threads out with a tap. You could probably make a new screw with a drill press and a grinder and some files. Or,you could do what I did years ago and buy a lathe.
Reply:Hmmm. My roller has 1 inch dia bolt with tapered threads also. Black, no plating on the screw. No visible wear after and turns smoothly. Will do 2 inch square. So perhaps a just a hardened screw with no finish.
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Originally Posted by tapwelder
Hmmm. My roller has 1 inch dia bolt with tapered threads also. Black, no plating on the screw. No visible wear after and turns smoothly. Will do 2 inch square. So perhaps a just a hardened screw with no finish.
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Uh..........one more thingNEVER, and I mean NEVER, store a respirator with chemical cartridges installed (out of the bag they came in) in an open environment. You need to remove the cartridges, and put them in sealed plastic baggies between uses.
Reply:Well if you don’t have any acme thread I would use a larger size fine thread and make sure it is good material not all thread
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Originally Posted by farmersammm
Uh..........one more thingNEVER, and I mean NEVER, store a respirator with chemical cartridges installed (out of the bag they came in) in an open environment. You need to remove the cartridges, and put them in sealed plastic baggies between uses.
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Got the 5/8" acme screw, nuts, and used this grease on it. (Snap-On, Komatsu - seems like wherever I'm working there's a "red" grease that's the bomb lol) Rolled a 1-1/2" x 1/8" flat bar into a perfect little circle with practically no effort. I'm so happy to have my roller back!Yeswelder MIG-205DS(3) Angle Grinders at the ReadyJust a hobbyist trying to improve
Reply:
Originally Posted by farmersammm
Uh..........one more thingNEVER, and I mean NEVER, store a respirator with chemical cartridges installed (out of the bag they came in) in an open environment. You need to remove the cartridges, and put them in sealed plastic baggies between uses.
Reply:
Originally Posted by farmersammm
Uh..........one more thingNEVER, and I mean NEVER, store a respirator with chemical cartridges installed (out of the bag they came in) in an open environment. You need to remove the cartridges, and put them in sealed plastic baggies between uses.
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Originally Posted by walker
You might want to let North and 3M know this tidbit of information, as this is what is in their cobo cartridge (THE PURPLE ONES) MSDS.“ 7.2. Conditions for safe storage including any incompatibilitiesNo special storage requirements.”Not saying it is not true for some special use cartridge, just not for the cartridges we generally use for painting or particulate use.
Reply:That quote is right off the paperwork, “No special storage requirements” somebody is reading something into them that isnt there, most likely half remembered from some other thing. Hanging them on the wall is fine according to the manufacturer, no need in making life harder than it has to be.
Reply:What it doesn't say is if this is for new cartridges or cartridges that have been in use. Most respirators come with a plastic bag to store them in anyway. Any shop I worked in they kept them in bags mostly to keep them clean for when they had to use them again. In a typical shop there can be all kinds of contaminates floating around.
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Originally Posted by Welder Dave
What it doesn't say is if this is for new cartridges or cartridges that have been in use. Most respirators come with a plastic bag to store them in anyway. Any shop I worked in they kept them in bags mostly to keep them clean for when they had to use them again. In a typical shop there can be all kinds of contaminates floating around.
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Originally Posted by walker
That quote is right off the paperwork, “No special storage requirements” somebody is reading something into them that isnt there, most likely half remembered from some other thing. Hanging them on the wall is fine according to the manufacturer, no need in making life harder than it has to be.
Reply:Oh, I keep mine in a bag, but the fear mongering from the safety nazi about it hanging on the wall is just wrong, and I dislike things that are wrong.
Reply:It's just wrong disliking things that are wrong.
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Reply:Did I mention how happy I am to have my ring roller back in action
Yeswelder MIG-205DS(3) Angle Grinders at the ReadyJust a hobbyist trying to improve
Reply:
Originally Posted by Shootr
Did I mention how happy I am to have my ring roller back in action
Reply:Ok, I've never used one of these machines obviously, but when you are rolling square stock, does it sit flat on the rollers? Or does it sit up on edge in the grooves? Is it possible to use it either way?250 amp Miller DialArc AC/DC StickF-225 amp Forney AC Stick230 amp Sears AC StickLincoln 180C MIGVictor Medalist 350 O/ACut 50 PlasmaLes
Originally Posted by whtbaron
Ok, I've never used one of these machines obviously, but when you are rolling square stock, does it sit flat on the rollers? Or does it sit up on edge in the grooves? Is it possible to use it either way?
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Last edited by Shootr; 11-23-2020 at 09:49 AM.Yeswelder MIG-205DS(3) Angle Grinders at the ReadyJust a hobbyist trying to improve
Reply:I have an original manual Y2k roller. It uses vee roller and will roll heavier wall round stock (greater than 11g) reasonable round. Noticeably greater distortion on 14g and thinner.On your bender, I would be hesitant to go too thick on round tubing, since you might distort the edges of the die?Last edited by tapwelder; 11-23-2020 at 10:54 AM.
Reply:Even the minimal distortion is noticeable when butting rolled parts together or combining straight to rolled parts.
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Originally Posted by tapwelder
I have an original manual Y2k roller. It uses vee roller and will roll heavier wall round stock (greater than 11g) reasonable round. Noticeably greater distortion on 14g and thinner.On your bender, I would be hesitant to go too thick on round tubing, since you might distort the edges of the die?
Reply:Interesting... thanks for the response.250 amp Miller DialArc AC/DC StickF-225 amp Forney AC Stick230 amp Sears AC StickLincoln 180C MIGVictor Medalist 350 O/ACut 50 PlasmaLes
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Originally Posted by Shootr
Appreciate the heads up on the possible roller damage. The EMT was for the ships wheel I made to replace the original crank handle. The copper was a test for an idea I saw on the internet. I'll lay off conduit but I think the copper will probably be OK once in a while.
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Originally Posted by psacustomcreations
Copper work hardens so as you pass it through the roller, it will get progressively harder. Use a propane torch to heat the copper up and it will return to a softer and malleable form.
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Originally Posted by psacustomcreations
Copper work hardens so as you pass it through the roller, it will get progressively harder. Use a propane torch to heat the copper up and it will return to a softer and malleable form.
Reply:I am pretty sure the square tube is just A36 mild steel. That does not work harden as far as I know. Sent from my SM-G930V using TapatalkMillermatic 252 MIGMiller Dynasty 200DX TIGMiller Spectrum 625 PlasmaAltas 12x36 Metal LatheBridgeport Milling Machinewww.psacustomcreations.com
Reply:Sometimes the cheapest mods can be the handiest - put a brodie knob on my ring roller - man does that speed things up!
Yeswelder MIG-205DS(3) Angle Grinders at the ReadyJust a hobbyist trying to improve
Reply:Get the Harbor Freight pipe threader and then make an adapter for the ring roller. Now it is power driven. I bought the roller adapter from Swag Off Road for the Harbor Freight tubing roller. Then I made a adapter so the pipe threader fit my sheet metal slip roller.Millermatic 252 MIGMiller Dynasty 200DX TIGMiller Spectrum 625 PlasmaAltas 12x36 Metal LatheBridgeport Milling Machinewww.psacustomcreations.com
Reply:
Originally Posted by Shootr
Sometimes the cheapest mods can be the handiest - put a brodie knob on my ring roller - man does that speed things up!
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发表于 2021-9-1 23:15:52