with our ACME leadscrew kits may work as a drop-in replacement for the
stock one and still use the stock leadscrews if that's of any use...
hope this helps!
david
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On Wed, 07 Sep 2011 23:36:22 -0700, gerry waclawiak
<gerrywac@hotmail.co.uk> wrote:
>
> There are no thrust bearings in the stock Y axis of the X2 mill, only
> the X and those perform quite well.
>
> The insertion of teflon/delrin or similar plastic thrust washers in the
> Y has been shown to be a considerable improvement without making a
> modified mount to take aball thrust bearing
>
> Gerry
> Leeds UK
>
> ________________________________
>> To: GrizHFMinimill@yahoogroups.com
>> From: superdave257@yahoo.com
>> Date: Thu, 8 Sep 2011 03:22:34 +0000
>> Subject: [GrizHFMinimill] Re: Y Axis Thrust Washers and Locknut
>>
>>
>>
>> I believe for that for about Seven Dollars you can get good top quality
>> thrust bearings that are a drop in replacement for the cheap Chinese
>> bearings that are in the X an Y axis of the mini mill. I bought mine at
>> KAMAN used to be Allied Bearings in OKC but they can be had a lot
>> cheaper from that online place (don't remember the name) maybe someone
>> else can fill in that blank.
>>
>> --- In
>> GrizHFMinimill@yahoogroups.com<mailto:GrizHFMinimill%40yahoogroups.com>,
>> SirJohnOfYork <steelchipper@...> wrote:
>> >
>> > On 9/6/2011 6:33 PM, Andrew wrote:
>> > >
>> > > John Z,
>> > >
>> > > Thanks for the well written article. Now I have ANOTHER mod to do.
>> > >
>> > > My Y table squeaks like crazy when turning the handle. This should
>> solve
>> > > the problem.
>> > >
>> > Just a couple of thoughts:
>> >
>> > David Clark of Maryland is still offering *FREE thrust washers*, so
>> be
>> > sure see his post in this thread about getting his snail mail
>> address to
>> > send a SASE to...!
>> >
>> > The Y-axis leadscrew has left hand threads. The black thrust washer
>> as
>> > shown in my last post, only really comes into play when cranking the
>> > Y-axis hand wheel /clockwise/ in order to move the table towards the
>> > back of the machine. (Equal and opposite reactions, the leadscrew
>> pushes
>> > the table back and so itself is pushed forward in return. That is
>> when
>> > the leadscrew shoulder wears on the retainer if there is no
>> lubricated
>> > thrust washer in there.)
>> >
>> > I did not elect to use the second washer for when cranking the hand
>> > wheel counter-clockwise, which is when the table moves forward
>> towards
>> > the operator and the leadscrew is thus drawn /in/. IIRC, David put a
>> > second thrust washer in between the graduated dial and the "Y-axis
>> > Leadscrew Retainer".
>> >
>> > At least on my particular machine, there is a slightly raised metal
>> lip
>> > at the center of the leadscrew retainer and graduated dial that acts
>> > like a thrust washer already. Again, at least on mine with it's
>> goofy 62
>> > and one half markings for the 16 TPI leadscrew, this already provides
>> > for nice smooth going when cranking counterclockwise (moving the
>> table
>> > forward towards the operator). Adding a thrust washer between the
>> > graduated dial:
>> >
>> > Dial, 62.5 Divisions <http://lmscnc.com/1483>
>> >
>> > and the leadscrew retainer that the dial goes up against:
>> > Retainer, Y-Axis Screw <http://lmscnc.com/1476>
>> >
>> > just opened up a gap in between them which I did not care for, since
>> I
>> > tend to get all messy with my little machines, and didn't want any
>> nasty
>> > swarf making its way down in between them. So I ultimately removed
>> that
>> > 2nd washer after testing both with and without it, and only ended up
>> > using the inner thrust washer (for when cranking clockwise, as shown
>> in
>> > the last post). Works for me without the 2nd washer just fine. YMMV.
>> > Widely, even. So try both ways and see what suits you best.. :-)
>> >
>> > Cheers,
>> > John Z. of York, Pennsylvania
>> >
>>
>>
>>
>
>
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