Unimat3 vs. Sherline lathes

[duncan webster 1Participant @duncanwebster1]

And what stops the spindle moving towards the tailstock if you are plain turning with a left hand tool.

[david bennett 8Participant @davidbennett8]

These are all the things on which sherline would have made the decision of the amount of preload. Experience and trial and error, I suppose.

dave8

[david bennett 8Participant @davidbennett8]

Duncan, the spindle nose stops it.

P.S. I would like to add for all that I am not happy defending Sherline. I am here to find out why they perform so well.

dave8

[duncan webster 1Participant @duncanwebster1]

I give up.

[david bennett 8Participant @davidbennett8]

Duncan Webster. Feel free to ignore this.

Somewhat surprised by your earlier reaction, I have just re-read our earlier exchange. Yes, I got it wrong. I can only plead brain fart and apologise. If ,however, you are giving me a series of tests, then stop it now.

( I beleive the interference fits between spindle and bearings are all that hold it together)

dave8

[Michael GilliganParticipant @michaelgilligan61133]

Posted for information only:

.

.

 

MichaelG.

Ref: http://sherline.com/wp-content/uploads/2015/01/5326_instructions_v8_web2021.pdf

 

[Michael GilliganParticipant @michaelgilligan61133]

See also:

https://www.sherline.com/wp-content/uploads/2016/03/4000plan.jpg

for an export from a nice AutoCAD drawing by John Costello.

MichaelG.

[JasonBModerator @jasonb]

David, if after the photos I posted of the head and it’s shoulders and the parts diagrams Michael has posted you believe it is all held together by interference fits then I suggest you are still farting.

Worth doing some more research on how spindles are put together and adjusted be they deep groove, angular contact or taper roller. The different interference fits are there so there is no play between bearing outers and the head or bearing inners and the spindle, you need something to retain them against cutting loads over time (as per Duncan’s comment) if there were no shoulder , no flange on the spindle and no nut then the whole assembly could creep over time particularly with a heavy intermittent cut.

 

[duncan webster 1]

On duncan webster 1 Said:

I give up.

On david bennett 8 Said:

…

( I beleive the interference fits between spindle and bearings are all that hold it together)

 

dave8

Oh, good grief! And the world’s flat. I’ll follow Duncan, and give up.

[david bennett 8Participant @davidbennett8]

I told you I am not happy defending the sherline. As I’ve said, I haven’t even seen one. What you describe as a bearing washer, I thought was a dust cover. Now I have learned something. So why were you asking me?

dave8

[Kiwi Bloke]

On Kiwi Bloke Said:

On duncan webster 1 Said:

I give up.

On david bennett 8 Said:

…

( I beleive the interference fits between spindle and bearings are all that hold it together)

 

dave8

Oh, good grief! And the world’s flat. I’ll follow Duncan, and give up.

I am with you and Duncan, and yes the world is flat I walked around the perimeter to prove it.

There are none so blind as those who will not see, seems appropriate.

Regards

Gray,

[david bennett 8Participant @davidbennett8]

…So why are you asking me?

I have now become much more interested in your motives for posting here.

dave8

[Grindstone CowboyParticipant @grindstonecowboy]

<facepalm>

[david bennett 8Participant @davidbennett8]

….So why are you asking me?

No answers?

Could it be to allow you to demonstrate your superior knowledge?

Let’s have your motives.

dave8

 

‘

 

 

 

 

 

 

 

 

 

 

 

 

 

 

[JasonBModerator @jasonb]

I think this thread has gone far enough and we don’t need any trolling.

[Author]

Posts