evansste
Electrical
- Jul 25, 2015
- 4
I'm working on a project that requires me to spin a 2-inch diameter shaft, with a length that is less than 14 inches long, at a rate of 16,000 RPM. When attempting to spin the shaft, at this speed, I've noticed extreme shaking and vibration. However, up until now, all of my shafts have been hollow. This may easily explain why the shafts, themselves, are unbalanced; hence the extreme vibration.
I've been able to confirm that my hollow shaft is unbalanced. It was designed to work inside of an air bushing. So, I've placed it inside of an air bushing, horizontally, gave it a little spin, and have noticed that it always settles in the same orientation. This clearly shows that the shaft has a heavy side.
So, here's my question. If I buy a solid shaft, will it not do this, by default? Will I be able to spin it, and notice that it won't have a heavy side?
I recognize that shafts, for air bushings, naturally have strict tolerances. So, if the material is completely homogeneous, it would make sense that all such solid shafts, would be naturally balanced. However, is this true in actuality? I'd hate to buy one, only to find that I still have the problem of the shaft being unbalanced.
It's important that the solid shaft be able to pass the horizontal, static balance test. This is because, if it does, I'd like to use it to static balance a disk, that I have.
Is anyone able to confirm that solid shafts, for air bushings, are balanced? If anyone is, then I'd love to hear from you.
If material type is a factor, I'll add that I'd like to buy a solid, aluminum, shaft for my air bushing. However, if it turns out that the shaft will be unbalanced, then I won't be able to use it, for this purpose, and that money will have been wasted. For this reason, it'd be great to hear from anyone who has tried something like this, or from those who have experience, in this area.
Thanks for your time. All input will be greatly appreciated.
I've been able to confirm that my hollow shaft is unbalanced. It was designed to work inside of an air bushing. So, I've placed it inside of an air bushing, horizontally, gave it a little spin, and have noticed that it always settles in the same orientation. This clearly shows that the shaft has a heavy side.
So, here's my question. If I buy a solid shaft, will it not do this, by default? Will I be able to spin it, and notice that it won't have a heavy side?
I recognize that shafts, for air bushings, naturally have strict tolerances. So, if the material is completely homogeneous, it would make sense that all such solid shafts, would be naturally balanced. However, is this true in actuality? I'd hate to buy one, only to find that I still have the problem of the shaft being unbalanced.
It's important that the solid shaft be able to pass the horizontal, static balance test. This is because, if it does, I'd like to use it to static balance a disk, that I have.
Is anyone able to confirm that solid shafts, for air bushings, are balanced? If anyone is, then I'd love to hear from you.
If material type is a factor, I'll add that I'd like to buy a solid, aluminum, shaft for my air bushing. However, if it turns out that the shaft will be unbalanced, then I won't be able to use it, for this purpose, and that money will have been wasted. For this reason, it'd be great to hear from anyone who has tried something like this, or from those who have experience, in this area.
Thanks for your time. All input will be greatly appreciated.