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27-02-2018 #1
Hi
I've posted this up on the Denford site but thought I'd put it here too :)
I've recently bought a project Triac. I knew the Z ball screw would probably need replacing but after some advice from Colin on here I have searched and found somewhere that may be able to re-ball it.
Clearly I have to take it out and that's where the challenge comes...
I've done some googling and I haven't found any info or procedure on doing this.
There doesn't look to be enough room for the screw to be removed without removing the lower bearing.
How I see it:
1 - remove pulley.
2 - remove locknut and tab from top of screw.
3 - not sure...
I don't want to hammer the lower bearing out with the screw as it may damage it.
I can't get to the rear to remove it with my blind bearing puller as there is no access.
I could maybe drive the bearing out with a long punch being careful?
I could unbolt the column of the base and get to it that way but I'd rather not disturb everything - saying that if I got the lower bearing out I would have to fit a new bearing from the bottom anyway.
It's a bit like one of those puzzles you get at Christmas.
Any thoughts would be appreciated - particularly if I am missing something obvious.
Thinking about taking the head ball nut bracket of too to go with the screw for the refurb so the pre-load is correct.
My Triac doesn't have the bearing cap as per the drawing below.
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