Another "out of round" problem

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RonSchmitt

RonSchmitt

Member
Joined
Jan 9, 2006
Messages
544
Location
Milwaukee, Wi, USA.
Just replaced the headstock bearings in my TCLPRO, cleaned all the parts and re-assembled. Now I am getting a wobble on the headstock side. I used good bearings, not the ones from Penn State. The centers line up, and the wobble is the same with or without a mandrell.

I'm going to try and return the bearings for anoher set and replace them again, but anyone have anything else I should check?
 
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Did you have the problem before you changed the bearings? If so, I would find a way to put the headstock shaft between centers of some sort and check it to see how true it was manufactured. When between centers, only rotate the shaft.
 
Hey Ron- Where did you pick up your bearings? I am having a similar problem and when I take it apart, I would like to change the bearings. -Thanks!
 
RonSchmitt said:
The centers line up, and the wobble is the same with or without a mandrell.
Click to expand...

What is wobbling?
Is the dead center in the headstock wobbling?
Have you tried a different dead center?
With the dead center removed can you see wobble inside of the spindle?

If you think the spindle has wobble, you can check it by placing a sharpie marker on your tool rest and slowly bring it to the inside edge of the spindle, while it is running,until it touches. It will leave a mark on the high spot.
You can also check it with a dial indicator if you have one.
Just my two cents!
 
Check to make sure that the bearings are fully seated. If not this will create a wobble or vibration at high speed. Use a mallet and soft piece of wood to make sure they're all the way in. You also might want to check that the belt pulleys are lined up as this will also cause vibration if the are not aligned properly. Check to make sure the spindle moves freely before the belt is installed. If the bearings are seated properly there should be no resistance when you turn it by hand.
 
If you think the spindle has wobble said:
Did the sharpie on the outside of the spindle, it touches on half of it. The bearings were seated all the way, gonna take the bearings back and try replacing them again.

Thanks for the advice.:biggrin:
Click to expand...
 
Depending on how you seated the bearings, you could have change the rotation of the center. I have better luck seating bearing by using a socket that ONLY touches the outside of the bearing body and not the inside center portion. Gently tap the bearing into the seat AFTER you have completely cleaned the opening first.

Be sure to keep us updated on your progress as I am sure someone else will learn from your experiences in this matter. Good luck!
 
Round again!!!

Thanks Ed,
I THINK I got it. Got replacement bearings today ( will NEVER deal with Bearings Inc. in Oak Creek again ) and used a bar clamp, block of wood, and a reducing bushing to PRESS the new bearings in. ( 2 inch to 1/2 inch reducing bushing. 2 in side fits on the outside of the bearing, 1/2 in side fit the clamp.) Seems to be turning the way it should, now I gotta figure out what I didn't tighten right. Got a vibration that "just aint right"

Thanks to everyone for all the advice. I used several of the suggestions and am now a professional bearing installer.:biggrin:

For those of you that have to chage the bearings, CHANGE THE BELT at the same time.
 
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