Is your spindle bore large enough?

Head stock bore on my ML7 accourding to he manual is 0.625". It's not, is is 0.586", frustratingly small. The gap bed is small too so cannot swing the arms of Hemmingway's staking tool. Dealing with the lathe limitations takes much time and anguish.

Bob

Robert,

Have a look at this thread from May 2019 **LINK**

https://www.model-engineer.co.uk/forums/postings.asp?th=142280

... It won't take you long: Swarf Mostly!'s request was sadly met with apathy.

MichaelG.

I would agree, I have 38mm and sometimes wish it was bigger, in fact I just wish I had a bigger lathe

Just looking at your photo made me realise I have never used the steady

Edited By petro1head on 10/08/2019 09:47:04

In the oil industry they have pipe lathes with spindle bores up to 18"!

The bore in my little 8 x 14” Lathe is 20mm which is large enough for nearly everything I’ve wanted to do on it. Bigger is always better in this respect though so I’d ideally like it to be at least 25mm if not more!

Is Your Spindle bore large enough ?

Of course not, they never are

I do a lot of work with the fixed steady on my 20mm spindle hole Boxford.

No biggie working at the tailstock end.

The affordable chineese Weiss Machinery 180/210 lathes can maybe be improved at no great cost.

Lower part of picture shows situation as bougth.

That is

Morsecone 3 , 20mm bore, two 30 times 62 times 17mm conical roller bearings.

Upper part is a new spindle that

Can work with ER40 collets,  has 30 / 20mm bore and needs a new single 32908 conical bearing.

This can be changed by everyone with lathes and only nessecary modification is the front bearing inner grease seal that shall be opened to 40.05mm.

All drive and feed drive geartrain is not changed.

Just put on the new spindle.

Are we enough to make a demand at the chineese embassy and how much would we pay per new spindle without tears?

Edited By Niels Abildgaard on 10/08/2019 17:56:47

Edited By Niels Abildgaard on 10/08/2019 18:05:38

I've used the full 52mm cpacity of my steady a few times. I even had to 3D print a 3 1/2" steady for one job, obviously light cuts...

Neil

Posted by Neil Wyatt on 10/08/2019 21:20:11:

I've used the full 52mm cpacity of my steady a few times. I even had to 3D print a 3 1/2" steady for one job, obviously light cuts...

Neil

Yep 2" brass in the pic.

knurled and screwcut, and parted off all at the tailstock end.