On Thu, 13 Nov 2008 22:35:48 -0800, "Bill Noble"
wrote:
"Wayne Cook" wrote in message
.. .
On Sun, 2 Nov 2008 20:14:23 -0800, "Bill Noble"
wrote:
I just pulled the gearbox that drives the table on my Abene VF-3 mill - I
got tired of the belt slipping off every time I went to raise the table -
figured it was oil leaking past the old hardened seals that was causing
the
problem - once I change the seals we shall see if that is the issue. But,
the question now is:
should I change the flat belt to a ribbed belt - it wouldn't be hard to
put
the pulleys on my lathe and turn grooves in them to match a grooved
pulley,
but if I did that there would be no going back to the old flat belt - and
I
would loose a safety factor
Second Q - would a new flat belt make any difference?
for those who don't know what an Abene mill looks like, there is a photo
on
my web page (below) under hobbies/tools - the drive motor for the table is
in the base behind the box holding the electrics
What we put on mine is a ribbed belt. However we left the pulleys
alone and run the belt inside out (the flat side to the pulley). It's
worked great for many years now.
so, now, after some correspondence with the factory, some measuring, and
some flailing around including repainting the gearbox cover casting 3 times
(there was oil under the filler putty that made the casting smooth - took a
while to figure that one out), I'm now close to having time to reassemble
it.
1. the oil seals (which I destroyed getting them out) are 17mmX35mmX10mm -
it seems to me there ought to be a matching standard seal - but I am not
finding one - of course I can do some additional machining but does this
size seem familiar to anyone?
2. belt - Abene says they used both V and flat belts on this machine - mine
has triple V belts to drive the spindle and a single flat belt to drive the
table gearbox - the flat belt sheaves, measured at the crown are 88 mm
(about 3.5 inches) and 51 mm (about 2 inches) - I'm thinking of changing to
a J series micro-V belt - any thoughts on this idea? I guess I could change
to a V belt - it only needs to hold 2 HP after all.
3 the original flat belt is 40 inches X 1 inch - does that size seem
standard? The belt in there now is a Gates SpeedFlex, which is long
obsolete. Any thoughts other than using a microV belt?
** Posted from http://www.teranews.com **
From SKF's site, the seal is a CR 17X35X10 CRSA1 R, US stock no.6712.
For the belt, I'd download Gates' belt sizing app. The micro v sounds
more likely to fit in the same space as the flat belt than a standard
V.
Regards,
Pete Keillor