adjusting spindle bearings

adjusting spindle bearings

Post by Ian McKinl » Thu, 04 Feb 1999 04:00:00



    I have an older woodlathe that I am fixing up and I need some
information. I found both play and noise in the old ball bearings and
ordered new ones. On the left end  of the spindle are two nuts that I
thought were to adjust the bearings but was told not so by an older
machinest. He said that the manufacture had built in the amount of
play that the bearing should have and not to try to adjust it for
less. Said that if there was to much play I needed to go to a more
precision bearing. He explained that the two nuts are not the same
thing as the adjusting nuts on a tapered roller bearing spindle. So
what are the two nuts for? The spindle fits tightly enough in the
bearings that it is not going to go eneywhere in use.  And what is the
preload adjustment that is on many machine tool spindles?

     My understanding of how to install the bearings is as follows.
Press the first bearing on the spindle untill it seats against the
sholder then place the spindle into the headstock and install the step
pully then press the outboard bearing onto the spindle untill it is
seated in the headstock. This last detail is one of the grey areas I
am seeking clarification on.

    Thank you for any help you can give.

 
 
 

adjusting spindle bearings

Post by Mark McDad » Thu, 04 Feb 1999 04:00:00


If it's a typical Delta wood lathe, there are
supposed to be some flat washer-like springs
between the nuts and bearings to provide the
pre-load.  The say you should replace the springs
any time you remove the nuts.

Mark


------------------

Quote:

>     I have an older woodlathe that I am fixing up and I need some
> information. I found both play and noise in the old ball bearings and
> ordered new ones. On the left end  of the spindle are two nuts that I
> thought were to adjust the bearings but was told not so by an older
> machinest. He said that the manufacture had built in the amount of
> play that the bearing should have and not to try to adjust it for
> less. Said that if there was to much play I needed to go to a more
> precision bearing. He explained that the two nuts are not the same
> thing as the adjusting nuts on a tapered roller bearing spindle. So
> what are the two nuts for? The spindle fits tightly enough in the
> bearings that it is not going to go eneywhere in use.  And what is the
> preload adjustment that is on many machine tool spindles?

>      My understanding of how to install the bearings is as follows.
> Press the first bearing on the spindle untill it seats against the
> sholder then place the spindle into the headstock and install the step
> pully then press the outboard bearing onto the spindle untill it is
> seated in the headstock. This last detail is one of the grey areas I
> am seeking clarification on.

>     Thank you for any help you can give.


 
 
 

adjusting spindle bearings

Post by roger r degne » Fri, 05 Feb 1999 04:00:00


I have purchased a Gorton Pantograph mill p2-3 and am looking for an
instruction book and a source for collets.
Any suggestions
Thanks
Roger R Degner
Franklin, MN, USA

 
 
 

adjusting spindle bearings

Post by James Quic » Fri, 05 Feb 1999 04:00:00


Roger,
Can't help you with the instruction manual or collets, But just curious.
Did you get the Gorton at the Minneapolis Tech auction a couple of weeks
ago?  Cool looking machine, good price as I recall.
Jim
Quote:

> I have purchased a Gorton Pantograph mill p2-3 and am looking for an
> instruction book and a source for collets.
> Any suggestions
> Thanks
> Roger R Degner
> Franklin, MN, USA