Solid V Wheel bearings

Scott A Tovey #99819 Hi, My name is Scott. I joined this group to ask a couple questions regarding bearings as I ran into an odd scenario over this past month. Bearings deforming while sitting around doing nothing. I have a laser burner with Solid V Wheels. I upgraded the z-axis to one with a manual adjusting knob making it easier to put the laser at the right spot. I let the thing set there for about a month and when I turned it on the other night, that axis was frozen in place. I had to manually force the axis to move, but when the wheels rotate 360 degrees, the bearings lock in place. So I swapped out the bearings for ones that didn't have this problem and the next morning the bearings had developed the same but not as severe condition. Has anyone heard of this happening before? Are there bearings out there with plastic or nylon ball bearings that will deform should they be holding up a bit more weight than what they were designed for?
Bill in OKC too Всі повідомлення цього користувача #99820 Scott, all materials do that. Though in steel, it takes much heavier loads. If you need non-metallic bearings you might want to try ceramic bearings. They'll be a little more resistant to plastic deformation than most common plastics. You might want to just replace the deformed plastic bearings with steel bearings. Bill in OKC <---- not an expert at anything, not an engineer, and definitely not an expert in machine design. I have been several kinds of mechanic. Parts that deform are either overloaded, or overheated, or both, usually. HTH! Bill in OKC William R. Meyers, MSgt, USAF(Ret.) A human being should be able to change a diaper, plan an invasion, butcher a hog, conn a ship, design a building, write a sonnet, balance accounts, build a wall, set a bone, comfort the dying, take orders, give orders, cooperate, act alone, solve equations, analyze a new problem, pitch manure, program a computer, cook a tasty meal, fight efficiently, die gallantly. Specialization is for insects. LAZARUS LONG (Robert A. Heinlein) On Thursday, June 24, 2021, 08:17:03 PM CDT, Scott A Tovey via groups.io <satovey@...> wrote: Hi, My name is Scott. I joined this group to ask a couple questions regarding bearings as I ran into an odd scenario over this past month. Bearings deforming while sitting around doing nothing. I have a laser burner with Solid V Wheels. I upgraded the z-axis to one with a manual adjusting knob making it easier to put the laser at the right spot. I let the thing set there for about a month and when I turned it on the other night, that axis was frozen in place. I had to manually force the axis to move, but when the wheels rotate 360 degrees, the bearings lock in place. So I swapped out the bearings for ones that didn't have this problem and the next morning the bearings had developed the same but not as severe condition. Has anyone heard of this happening before? Are there bearings out there with plastic or nylon ball bearings that will deform should they be holding up a bit more weight than what they were designed for?
Scott A Tovey #99821 "You might want to just replace the deformed plastic bearings with steel bearings." That's what I'm thinking of doing. I'm looking at open builds as a source, any sources you know of off hand? On Thursday, June 24, 2021, 10:06:30 PM EDT, Bill in OKC too via groups.io <wmrmeyers@...> wrote: Scott, all materials do that. Though in steel, it takes much heavier loads. If you need non-metallic bearings you might want to try ceramic bearings. They'll be a little more resistant to plastic deformation than most common plastics. You might want to just replace the deformed plastic bearings with steel bearings. Bill in OKC <---- not an expert at anything, not an engineer, and definitely not an expert in machine design. I have been several kinds of mechanic. Parts that deform are either overloaded, or overheated, or both, usually. HTH! Bill in OKC William R. Meyers, MSgt, USAF(Ret.) A human being should be able to change a diaper, plan an invasion, butcher a hog, conn a ship, design a building, write a sonnet, balance accounts, build a wall, set a bone, comfort the dying, take orders, give orders, cooperate, act alone, solve equations, analyze a new problem, pitch manure, program a computer, cook a tasty meal, fight efficiently, die gallantly. Specialization is for insects. LAZARUS LONG (Robert A. Heinlein) On Thursday, June 24, 2021, 08:17:03 PM CDT, Scott A Tovey via groups.io <satovey@...> wrote: Hi, My name is Scott. I joined this group to ask a couple questions regarding bearings as I ran into an odd scenario over this past month. Bearings deforming while sitting around doing nothing. I have a laser burner with Solid V Wheels. I upgraded the z-axis to one with a manual adjusting knob making it easier to put the laser at the right spot. I let the thing set there for about a month and when I turned it on the other night, that axis was frozen in place. I had to manually force the axis to move, but when the wheels rotate 360 degrees, the bearings lock in place. So I swapped out the bearings for ones that didn't have this problem and the next morning the bearings had developed the same but not as severe condition. Has anyone heard of this happening before? Are there bearings out there with plastic or nylon ball bearings that will deform should they be holding up a bit more weight than what they were designed for?
Tony Smith Всі повідомлення цього користувача #99822 Lasers aren't exactly heavy duty machines, maybe not use the breaker bar when torquing things up? Plenty of 3D printers use plastic bearings & v-grooves, they seem to work fine. Not sure why you'd be using bearings with plastic balls, they're usually only for food grade stuff. Most v-bearings are steel with the plastic outer. Tony переключити цитоване повідомлення Показати цитований текст -----Original Message----- From: CAD-CAM-EDM-DRO@groups.io <CAD-CAM-EDM-DRO@groups.io> On Behalf Of Scott A Tovey via groups.io Sent: Friday, 25 June 2021 10:09 AM To: CAD-CAM-EDM-DRO@groups.io Subject: [CAD-CAM-EDM-DRO] Solid V Wheel bearings Hi, My name is Scott. I joined this group to ask a couple questions regarding bearings as I ran into an odd scenario over this past month. Bearings deforming while sitting around doing nothing. I have a laser burner with Solid V Wheels. I upgraded the z-axis to one with a manual adjusting knob making it easier to put the laser at the right spot. I let the thing set there for about a month and when I turned it on the other night, that axis was frozen in place. I had to manually force the axis to move, but when the wheels rotate 360 degrees, the bearings lock in place. So I swapped out the bearings for ones that didn't have this problem and the next morning the bearings had developed the same but not as severe condition. Has anyone heard of this happening before? Are there bearings out there with plastic or nylon ball bearings that will deform should they be holding up a bit more weight than what they were designed for?
Dan Mauch Всі повідомлення цього користувача #99823 Could it possibly because of stray current running thru the bearings. Try measuring current between the frame and the bearings. Dan переключити цитоване повідомлення Показати цитований текст -----Original Message----- From: CAD-CAM-EDM-DRO@groups.io [mailto:CAD-CAM-EDM-DRO@groups.io] On Behalf Of Scott A Tovey via groups.io Sent: Thursday, June 24, 2021 5:09 PM To: CAD-CAM-EDM-DRO@groups.io Subject: [CAD-CAM-EDM-DRO] Solid V Wheel bearings Hi, My name is Scott. I joined this group to ask a couple questions regarding bearings as I ran into an odd scenario over this past month. Bearings deforming while sitting around doing nothing. I have a laser burner with Solid V Wheels. I upgraded the z-axis to one with a manual adjusting knob making it easier to put the laser at the right spot. I let the thing set there for about a month and when I turned it on the other night, that axis was frozen in place. I had to manually force the axis to move, but when the wheels rotate 360 degrees, the bearings lock in place. So I swapped out the bearings for ones that didn't have this problem and the next morning the bearings had developed the same but not as severe condition. Has anyone heard of this happening before? Are there bearings out there with plastic or nylon ball bearings that will deform should they be holding up a bit more weight than what they were designed for?
Tony Smith Всі повідомлення цього користувача #99824 If stray current is causing problems to plastic bearings, I'd be rather intrigued to see that setup. These bearing are similar to the roller guides used on doors, they shouldn't deform overnight unless they're made from jelly. Even then, there shouldn't be enough force in a laser cutter to damage a bearing. Very odd. Most lasers use linear bearings, this sounds like a 3D printer pretending to be one. Still, plastic bearings work on those, even the cheap K40 lasers use plastic rollers on the head. Tony переключити цитоване повідомлення Показати цитований текст -----Original Message----- From: CAD-CAM-EDM-DRO@groups.io <CAD-CAM-EDM-DRO@groups.io> On Behalf Of Dan Mauch Sent: Saturday, 26 June 2021 3:33 AM To: CAD-CAM-EDM-DRO@groups.io Subject: Re: [CAD-CAM-EDM-DRO] Solid V Wheel bearings Could it possibly because of stray current running thru the bearings. Try measuring current between the frame and the bearings. Dan -----Original Message----- From: CAD-CAM-EDM-DRO@groups.io [mailto:CAD-CAM-EDM- DRO@groups.io] On Behalf Of Scott A Tovey via groups.io Sent: Thursday, June 24, 2021 5:09 PM To: CAD-CAM-EDM-DRO@groups.io Subject: [CAD-CAM-EDM-DRO] Solid V Wheel bearings Hi, My name is Scott. I joined this group to ask a couple questions regarding bearings as I ran into an odd scenario over this past month. Bearings deforming while sitting around doing nothing. I have a laser burner with Solid V Wheels. I upgraded the z-axis to one with a manual adjusting knob making it easier to put the laser at the right spot. I let the thing set there for about a month and when I turned it on the other night, that axis was frozen in place. I had to manually force the axis to move, but when the wheels rotate 360 degrees, the bearings lock in place. So I swapped out the bearings for ones that didn't have this problem and the next morning the bearings had developed the same but not as severe condition. Has anyone heard of this happening before? Are there bearings out there with plastic or nylon ball bearings that will deform should they be holding up a bit more weight than what they were designed for?

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