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Old 02-11-2020, 10:42 AM
threepiece threepiece is offline
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Default Indexing Fixture Seized Pin

Kalamazoo Industries calls this a RTBA Rotary Table. Because it has an indexing pin and slots instead of a crank and rotating feature I would rather call it an indexing fixture. It is nonetheless a very handy piece of equipment.

Mine has set on the cart unused for about ten years. I discovered the indexing pin seized in its bore when I tried to use it. For accuracy, the fit of these pins is very close, it doesn’t take much corrosion to bind them up. I tried in vain to loosen the pin with prying, tapping and oil, I needed to do something different.
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With the amount of energy that is being consumed I expect most people on earth should be living in Utopia. And now this?

It started hitting the fan in the 1950's https://m.youtube.com/watch?v=nRnNDkHb0MU

A technologically advanced society would teach their children how to start a fire by rubbing two sticks together before teaching them how to use a lighter.

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Old 02-11-2020, 11:25 AM
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Here is what the parts look like
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Old 02-11-2020, 12:48 PM
threepiece threepiece is offline
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I did free the pin so no need for anyone to consider it further. Thank you digr for the link I did get some insight on the cost of the indexing rings that I might need.

I made an adapter with which I was able to connect a slide hammer to the pin. A slot was ground in the hardened pin with a cut-off disk. The slot is to clear the split pin shown in the adapter block next to the pin.
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With the amount of energy that is being consumed I expect most people on earth should be living in Utopia. And now this?

It started hitting the fan in the 1950's https://m.youtube.com/watch?v=nRnNDkHb0MU

A technologically advanced society would teach their children how to start a fire by rubbing two sticks together before teaching them how to use a lighter.

If you are not having fun then you are doing it wrong.
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  #4  
Old 02-11-2020, 12:54 PM
threepiece threepiece is offline
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The other end of the adapter is threaded 1/4-20. I made a simple hammer with a piece of thread rod and a piece of 1” diameter steel round.
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With the amount of energy that is being consumed I expect most people on earth should be living in Utopia. And now this?

It started hitting the fan in the 1950's https://m.youtube.com/watch?v=nRnNDkHb0MU

A technologically advanced society would teach their children how to start a fire by rubbing two sticks together before teaching them how to use a lighter.

If you are not having fun then you are doing it wrong.
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  #5  
Old 02-11-2020, 01:04 PM
threepiece threepiece is offline
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The pin was stubborn. It took numerous blows to move it. At one point I considered the split pin that I installed was deforming and was to let go. I hammered in and out a surprising amount of times and I finally moved the pin enough to remove the chuck.
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With the amount of energy that is being consumed I expect most people on earth should be living in Utopia. And now this?

It started hitting the fan in the 1950's https://m.youtube.com/watch?v=nRnNDkHb0MU

A technologically advanced society would teach their children how to start a fire by rubbing two sticks together before teaching them how to use a lighter.

If you are not having fun then you are doing it wrong.
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  #6  
Old 02-11-2020, 01:30 PM
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....and now your going to drill & tap it for a grease fitting....
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Old 02-11-2020, 04:40 PM
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Quote:
Originally Posted by digger doug View Post
....and now your going to drill & tap it for a grease fitting....
Looks like a good candidate for electrolysis.
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Old 02-11-2020, 04:45 PM
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I welded a pair of vise grips to a slide hammer for just such occasions.

I have some cartridge heaters that like to become one with the die body from time to time and the little tool pops them out.

Scott
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Old 02-11-2020, 06:55 PM
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Nice removal tool. Will have to remember that one.


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  #10  
Old 02-11-2020, 08:39 PM
threepiece threepiece is offline
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Quote:
Originally Posted by digger doug View Post
....and now your going to drill & tap it for a grease fitting....
I question the seriousness of your comment however I will say that the duty of this pin is much too low to need such a fitting. I only used a bit of oil after cleaning the surfaces.
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With the amount of energy that is being consumed I expect most people on earth should be living in Utopia. And now this?

It started hitting the fan in the 1950's https://m.youtube.com/watch?v=nRnNDkHb0MU

A technologically advanced society would teach their children how to start a fire by rubbing two sticks together before teaching them how to use a lighter.

If you are not having fun then you are doing it wrong.
Reply With Quote
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