Many thanks for the help on this so far...
Well, I managed to get both gearboxes stripped down, as anticipated I'll need a couple of new bearings when I reassemble the V10p box but I've either got these (6201) or they're on order (6301).
I now have another issue that can't be solved by impact. The outpur gear that connects to the leadscrew - apparently there's a Metric and an Imperial variant. Obviously I have the Metric one, however I need an Imperial one (or at least the number of teeth so I can get one made up. The Metric one has 32 teeth but this feels just a fraction too big to fit and get the bolts in the 'bearing block'* I have. (the gearbox output gear might also be different - they have subtly different part numbers).
Basically what I need to know is what the numbers of teeth the little gear on the end of the Norton Gearbox output shaft and the 'Leadscrew Drive Gear (English)* have, once I know what these are I can either buy or make replacements.
Tim
(Hereford, UK)
* that's the description in the parts list
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On 22/05/2025 01:47, Vedran via groups.io wrote:
You need to press the shaft out about 20mm as a unit more or less, and then take the gears off one by one. On my metric machine, the bearing on the right side (by the big gear) is a slip fit on the shaft, while the other one is a press fit. It's therefore best to push from right to left, and apply pressure on the shaft only (not the whole bearing). Left hand side bearing gets pushed out of the casting in the process, the right one stays in the casting. There's no way IMHO to do this in a bearing friendly way without a press, so best to replace (at least the left one) on reassembly if you tap the thing out with a hammer.
I've uploaded two relevant reassembly videos. They are not edited - sorry - but should give you an idea :)
Just don't go banging on the stuff as I did, I was young(er) and stupid when I did this... made me cringe when I watched it now :)
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Regards
Vedran
On Thu, May 22, 2025 at 2:23?AM roman fox via groups.io < groups.io> <romanfox68@... <mailto:[email protected]>> wrote:
Hi Tim could you send some photo ? Hmm i was look in spare part list
and is nothing what should hold this shaft in ,similar problem on
bought side when you try take off ? Ok the shaft can go out only on
leadscrew side at least on left side smallest one can pass bearing
hole in body ,it is interesting- bearings has not lock rings , check
up all gears are freely move during you try take off shaft also i
would try move out bearing on quadrand side from inside out if you
have acces ,time to time also can have shaft on ends smole mashrum
when you try nock in ,let us know if and what help to take out it
regards Roman
---------- P?vodn¨ª e-mail ----------
Od: Tim D Schomer <rototype@...
<mailto:rototype@...>>
Komu: [email protected] <mailto:[email protected]>
Datum: 21. 5. 2025 19:49:16
P?edm¨§t: [emcoV10lathe] Norton box Strip/Rebuild
Ahoj v?ichni,
Je ?as za?¨ªt pracovat na Blue V10, abych ji mohl p?ipravit k
prodeji (pot?ebuji m¨ªsto) a pot?ebuji vym¨§nit vnit?ky
Nortonov?ch box?.
Pokud si pamatujete, p?ed p¨¢r lety jsem si po?¨ªdil V10P ve velmi
p¨§kn¨¦m stavu, to byl Imperial. Zat¨ªmco jsem ho ?istil a
p?elakoval, vym¨§nil jsem ho za metrick? s pou?it¨ªm n¨§kter?ch
d¨ªl? z modr¨¦ V10. Poda?ilo se mi sehnat metrickou Nortonovou
p?evodovku V10p, co? mi to usnadnilo, ale te? mus¨ªm p?estav¨§t
V10 na Imperial (proto?e ostatn¨ª d¨ªly v metrick?ch soustav¨¢ch
nem¨¢m) a bez pomoci n¨¢hradn¨ª Nortonov¨¦ p?evodovky Imperial V10
mus¨ªm vyndat ozuben¨¢ kola z Imperial V10p Norton a vym¨§nit je za
metrickou V10 Norton. (Doufejme, ?e to nakonec p?inese i
n¨¢hradn¨ª metrickou p?evodovku V10p, je tu n¨§kdo, kdo by o ni
st¨¢l za slu?nou cenu?)
Zat¨ªm m¨¢m p?evodovku V10 pr¨¢zdnou a u V10p zbyla jen
sedmistup¨¾ov¨¢ osa, ale tu prost¨§ nem??u vyndat.
M¨¢m oba v¨¢lcov¨¦ ?epy vyta?en¨¦ z h?¨ªdele a kdy? na ni poklepu z
obou konc?, h?¨ªdel se trochu pohybuje, ale po asi 2 mm se to
prost¨§ zastav¨ª. Boj¨ªm se, ?e kdy? to ut¨¢hnu p?¨ªli? siln¨§, zlom¨ªm
odlitek.
M¨¢te n¨§jak¨¦ n¨¢vrhy, co bych mohl p?ehl¨¦dnout, nebo je to jen
p?¨ªpad tlaku/n¨¢razu a p?¨ªpadn¨§ tepla, aby se to dostalo ven?
Mnohokr¨¢t d¨§kuji
Tim
(Hereford, Spojen¨¦ kr¨¢lovstv¨ª)
Tim D Schomer