Author Topic: 920 lathe cross slide bearing mod  (Read 6389 times)

Offline matnewsholme

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920 lathe cross slide bearing mod
« on: September 24, 2009, 02:34:42 PM »
just a minor mod. my lathe is a variant on the common 920 lathe. The handwheels all run withouit any bearings and are a pain to adjust.
So I knocked up a new mount for the cross slide an incorporated a couple of ball bearings. makes a major difference to the smoothness of the action :D I realise that I should really have used thrust bearings but there was no room to get any in and I think the standard ones will be ok.

Matt


this shows the  old mount on the left and the new one on the right.





a couple more views



and finally the part fitted :D


Offline sbwhart

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Re: 920 lathe cross slide bearing mod
« Reply #1 on: September 24, 2009, 02:48:35 PM »
Nice one  :thumbup: :thumbup: :thumbup: :thumbup:

I wouldn't have thought having thrust bearings would have made much difference, very nice mod.

Thanks for showing

Stew
A little bit of clearance never got in the road
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Location:- Crewe Cheshire

Offline Gerhard Olivier

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Re: 920 lathe cross slide bearing mod
« Reply #2 on: September 24, 2009, 02:57:37 PM »
That is very nicely done Mat

Do let us know how much differance it makes please as this is on my list (near the top actually).

Gerhard
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Offline matnewsholme

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Re: 920 lathe cross slide bearing mod
« Reply #3 on: September 24, 2009, 03:08:45 PM »
hi geroli

Its made a very noticeable difference. Slide is very smooth now, whereas it always used to bind at certain points in travel before, plus Ive been able to tighten gib screws up quite a bit which improves rigidity, Parting is a lot better. Im so impressed im in process of doing a similar mod to the compound on this lathe and the xslide and compound on my 7x10 lathe too.

Matt

Offline Gerhard Olivier

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Re: 920 lathe cross slide bearing mod
« Reply #4 on: October 05, 2009, 11:19:14 AM »
That is nice to know - I have a lot of stuff that I want to do -nice to know the ones that make a diff.

What size is the bearing??

Nice looking mod aswell.

Gerhard
Guernsey
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Offline matnewsholme

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Re: 920 lathe cross slide bearing mod
« Reply #5 on: October 05, 2009, 01:36:11 PM »
there are two bearings. a 16x8x5 at the crossslide end and a 22x8x7 at the handle end. I can do a sketch if your interested with some dimensions on.

matt

Offline Gerhard Olivier

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Re: 920 lathe cross slide bearing mod
« Reply #6 on: October 05, 2009, 03:16:31 PM »
That would be very handy

No rush as there is a lot to do stil before this one is at top of list - and a lot would depend on the scrap box.

Gerhard
Guernsey
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Offline Brass_Machine

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Re: 920 lathe cross slide bearing mod
« Reply #7 on: October 06, 2009, 11:16:23 AM »
Hey Matt,

That is a very cool mod. Nice professional results.

Eric
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