Denford ORAC lathe spindle nose upgrade

[rnr107]

Old post warning !!!

What is the max size diameter that can be turned on an Orac? I have the chance to buy one, just not sure looking at some specs what I could realistically fit into a suitable chuck. This will be either Alu or Brass, nothing too hard. But size matters here ;p

Hi Chaz,
No idea what the maximum is... I never reached it.... But I did turn 2" bars without any problem.
In brass I'd say as long the stock clears the bed and the carriage you should be fine (using the internal jaws).

What kind of diameter are you thinking of ?

The spindle bore is 20mm this limit the diameter if you have a long bar that need to go throu the spindle.
But apart from that, the Orac is a very capable lathe. I mostly use it on stainless and a bit of ali. Brass would be a piece of cake.

RNR

[Chaz]

Hi Chaz,
No idea what the maximum is... I never reached it.... But I did turn 2" bars without any problem.
In brass I'd say as long the stock clears the bed and the carriage you should be fine (using the internal jaws).

What kind of diameter are you thinking of ?

The spindle bore is 20mm this limit the diameter if you have a long bar that need to go throu the spindle.
But apart from that, the Orac is a very capable lathe. I mostly use it on stainless and a bit of ali. Brass would be a piece of cake.

RNR

For brass, around 60mm. For Alu - 140mm (which I think will be too big).

[rnr107]

For brass, around 60mm. For Alu - 140mm (which I think will be too big).

60mm Brass no problem...
140mm Alu, it depend... Is it a long piece or more like a disk ?
If you don't need the carriage to get under then you good for up to 200mm. otherwise, you are limited to 110mm roughly.

RNR

[Chaz]

60mm Brass no problem...
140mm Alu, it depend... Is it a long piece or more like a disk ?
If you don't need the carriage to get under then you good for up to 200mm. otherwise, you are limited to 110mm roughly.

RNR

Disk, think of something like a wheel rim (scale RC).

[rnr107]

Disk, think of something like a wheel rim (scale RC).

In that case, no problem... I believe the ORAC would be fine for you...

Where are you based? Any close to Leeds / Bradford West Yorkshire?
If you want you can come to my place and see by yourself...

RNR

[Chaz]

In that case, no problem... I believe the ORAC would be fine for you...

Where are you based? Any close to Leeds / Bradford West Yorkshire?
If you want you can come to my place and see by yourself...

RNR

Thanks. Used to live in Whitworth, just North of Rochdale but now in West London area. Thanks for the offer.

[uli12us]

IIRC, in a recent Issue of MEW was the changing of the orac control to a newer one described. I hope, I can find the right one.