Mikron WF 31 CH horizontal spindle disassembly

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11 Nov 2021 12:49 #226099 by myval
I know when i disassemble it it will not be as good as it used to be but now is just a deadweight. Without replacing the seals and re-greasing it is not much useful anyway.
That is my thinking but i could be wrong.

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11 Nov 2021 13:26 #226101 by machinedude
the spanner holes are probably your preload. they are probably left handed threads taking a guess.

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11 Nov 2021 13:31 #226104 by myval
Ok and do i have to loosen that to remove the shaft?

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11 Nov 2021 13:43 #226106 by andypugh
I would say that the outer ring with the M4 holes must screw in. So perhaps the tapped holes are to attach a tool to allow it to be unscrewed.

It is possible that there might be left-hand threads.

Have you tried asking on cnczone?

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11 Nov 2021 13:44 #226107 by myval
The strange thing is that the nut has the drive spline on it so i guess it needs to be locked somehow. I still can not comprehend that they would design it to drive iso40 through the nut only without it being locked somewhat.
Left hand thread would make it even worse.

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17 Nov 2021 13:13 #226731 by myval
Bit of a Victory. I have it apart. If anyone else try just remember they hose everything down with Loctite and I mean drown everything in it.
So heat is your friend.
Had to make couple peg spanners with about 1.5m pipe on it and lot of heat to soften loctite all threads were right hand threads.
Thank you for help and advice guys.

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17 Nov 2021 13:41 #226733 by andypugh
I, for one, would be interested to see pictures.

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18 Nov 2021 06:36 #226839 by machinedude
yeah i will second the peek inside to see how they did everything :)  spindles can get pretty complex so seeing the inside of a high end spindle would be interesting :)

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18 Nov 2021 08:57 #226846 by myval
Well for all you spindel lovers here it is. Have not pulled the shaft all the way cause that would have to go under the press again and i have not cleaned it since I don't want it dry while i wait for grease and seals.
The thread you see was absolutely hosed with loctite and the actual bearing housing too. Without at least 20t press lot of heat and decent peg spanners it would be no go.
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18 Nov 2021 08:59 - 18 Nov 2021 09:00 #226847 by myval
Second lot of pics
Last edit: 18 Nov 2021 09:00 by myval.
The following user(s) said Thank You: arvidb

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