play in bearing to spindle

[Ian L2Participant @ianl2]

Posted by speelwerk on 04/01/2015 16:34:20:

Will give it a go wont cost much and its not permanent so now't to loose. But know idea where I can get it from! what's it used for might point me in direction of supply.

This is what I use but no doubt there is UK supplier.

http://shop.vogel-germany.de/product_info.php?language=en&info=p4826_thickness-gauge-foil-din-1544–brass–0-025-mm–2500-mm-x-150-mm.html&=

It is very thin and you will have to experiment with it what the best way is to use it, if you can use it at all. Niko.

They also have it in stainless with a thickness of 0.010 and 0.020 mm.

Edited By speelwerk on 04/01/2015 16:41:19

I'm thinking to start with putting this in in 3 strips about 10mm wide evenly spaced around then depending on results going up to 6 evenly spaced. if nothing else will eliminate the bad fit from smoothness

[Mike PooleParticipant @mikepoole82104]

Hard chrome plating is often used to reclaim worn shafts, I had the fork tubes of my motorcycle reclaimed by this process and it is cheaper than buying new parts link to Philpots of luton who did my forks. They grind the damage away then build up with hard chrome and then grind to size and concentricity.

Mike

[Ian L2Participant @ianl2]

Posted by speelwerk on 04/01/2015 16:34:20:

Will give it a go wont cost much and its not permanent so now't to loose. But know idea where I can get it from! what's it used for might point me in direction of supply.

This is what I use but no doubt there is UK supplier.

http://shop.vogel-germany.de/product_info.php?language=en&info=p4826_thickness-gauge-foil-din-1544–brass–0-025-mm–2500-mm-x-150-mm.html&=

It is very thin and you will have to experiment with it what the best way is to use it, if you can use it at all. Niko.

They also have it in stainless with a thickness of 0.010 and 0.020 mm.

Edited By speelwerk on 04/01/2015 16:41:19

Looking at how much I would need to purchase and a couple thickness I think I'm going to get some feeler gauges that I can cut into 3 spaces and see if I can determine just how much I need to increase by & by using them as packers will also help with determine if spindle is true. from that I can talk to platters with some knowledge as to how much I need to build up by.

[Russell EberhardtParticipant @russelleberhardt48058]

Posted by Ian L2 on 04/01/2015 18:14:14:

Vibrates and sounds clunky but that might be the belts as one is incorrect size and both very old (new one ordered) and appears to run eccentric to the eye.

Tried to get Dti on the register behind chick but Dti jumps like a good-den which is not surprising as having close look, the surface is bit damaged. I had drop M. T in spindle and Dti on that, M.T rusty. cleaned with wet n dry tried again, M.T still does not feel quite right. suspect inside spindle not clean so need to get something to clean inside Spindle And a New M.T. Will have another go then.

It sounds as if you are getting into a bit of a pickle. You need to separate the different possibilities for the DTI jumping around.

To check the spindle rotate it by hand not under power. That will eliminate any vibration from the motor or belts.

When I first got my Atlas I had a fair amount of vibration until I corrected the following:

• Replaced the old hardened belts with new ones
• Set the correct preload on the bearings
• Replaced the countershaft bearings
• and finally replaced the motor with a three phase motor and VFD

Russell.

[Ian L2Participant @ianl2]

Well just had another go with Dti. Tonight I put clean M.T in Spindle (also cleaned inside) the M.T sticks out about 20mm from spindle so I had Dti on M.T about 10mm from spindle. At this point I get Dti fluctuation of 0.02mm (not sure what would be good reading this close) but I did noticed the Dti is not steady as in it jumps between readings. Would poor bearing cause jumps on Dti.

[Russell EberhardtParticipant @russelleberhardt48058]

Posted by Ian L2 on 05/01/2015 21:25:15:

Would poor bearing cause jumps on Dti.

Could be grit in the bearings or the centre your'e using, even just lint from the cloth you cleaned it with. 0.02 mm is about 1/4 the size of a human hair.

It doesn't sound too bad to me.

Russell.

[Peter BondParticipant @peterbond14804]

FWIW – I've got a moderate amount of stainless HT foil (tool wrap) that is specced as 0.002"; it's what I shall be using to make up a few more shims for my ML7 headstock (4 on one side, 0 on the other…). I'll mike it later and check the thickness.

[Ian L2Participant @ianl2]

Posted by Russell Eberhardt on 05/01/2015 11:26:16:

Posted by Ian L2 on 04/01/2015 18:14:14:

Vibrates and sounds clunky but that might be the belts as one is incorrect size and both very old (new one ordered) and appears to run eccentric to the eye.

Tried to get Dti on the register behind chick but Dti jumps like a good-den which is not surprising as having close look, the surface is bit damaged. I had drop M. T in spindle and Dti on that, M.T rusty. cleaned with wet n dry tried again, M.T still does not feel quite right. suspect inside spindle not clean so need to get something to clean inside Spindle And a New M.T. Will have another go then.

It sounds as if you are getting into a bit of a pickle. You need to separate the different possibilities for the DTI jumping around.

To check the spindle rotate it by hand not under power. That will eliminate any vibration from the motor or belts.

When I first got my Atlas I had a fair amount of vibration until I corrected the following:

• Replaced the old hardened belts with new ones
• Set the correct preload on the bearings
• Replaced the countershaft bearings
• and finally replaced the motor with a three phase motor and VFD

Russell.

Hi Russell

You mentioned "replacing the countershaft bearings" I have the atlas part numbers as 9-108 and 9-109, Do you still have the old ones? just wondered if there is any ref numbers so I can try the bearing shop that we use at work to see if they are common easy to get bearings. I have new belts and without spindle belt fitted there is quite a lot of clunking from countershaft.

Thanks

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