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Gallery, Projects and General => Gallery => Topic started by: matnewsholme on September 24, 2009, 02:34:42 PM

Title: 920 lathe cross slide bearing mod
Post by: matnewsholme 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

(http://i363.photobucket.com/albums/oo74/mnewsholme/P1323_20-09-09640x480.jpg)
this shows the  old mount on the left and the new one on the right.

(http://i363.photobucket.com/albums/oo74/mnewsholme/P132401_20-09-09640x480.jpg)

(http://i363.photobucket.com/albums/oo74/mnewsholme/P1324_20-09-09640x480.jpg)

a couple more views

(http://i363.photobucket.com/albums/oo74/mnewsholme/P1839_23-09-09640x480.jpg)

and finally the part fitted :D

Title: Re: 920 lathe cross slide bearing mod
Post by: sbwhart 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

Title: Re: 920 lathe cross slide bearing mod
Post by: Gerhard Olivier 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

Title: Re: 920 lathe cross slide bearing mod
Post by: matnewsholme 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

Title: Re: 920 lathe cross slide bearing mod
Post by: Gerhard Olivier 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

Title: Re: 920 lathe cross slide bearing mod
Post by: matnewsholme 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

Title: Re: 920 lathe cross slide bearing mod
Post by: Gerhard Olivier 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

Title: Re: 920 lathe cross slide bearing mod
Post by: Brass_Machine on October 06, 2009, 11:16:23 AM

Hey Matt,

That is a very cool mod. Nice professional results.

Eric