What's new
What's new

Calling Locknut: Rear chuck for Doosan 400lc

LockNut

Stainless
Joined
Jan 6, 2007
Location
Bergen County
Alphonso,
Unfortunately, the only way to put a rear chuck on that machine is to have a chuck vendor do it. I asked and it sounds rather involved. If you are buying it used, old model, then you would have to have someone do it. Doosan does not have any options or drawings to do this from within.

Sorry,
Paul
 

LockNut

Stainless
Joined
Jan 6, 2007
Location
Bergen County
Slightly newer. You would need an outside vendor like Kitagawa or Samchully.

Douglas is correct. It can be done and at least one of those guys will do it. But........at what cost? If it's worth it to you, go for it. Actually, any chuck vendor will do it. And more than one may very well have done it already. Wouldn't hurt to call and ask.

Paul
 

alphonso

Titanium
Joined
Feb 15, 2006
Location
Republic of Texas
I have not laid eyes on either of these machines. What does the end of the spindle look like that makes it difficult to mount a chuck? Or is there some component(s) in the way?

Seems odd to me that a 7+ inch spindle hole wouldn't be at least "chuck ready." 'Course that's coming from oil field where everything has two chucks.
 

LockNut

Stainless
Joined
Jan 6, 2007
Location
Bergen County
I have not laid eyes on either of these machines. What does the end of the spindle look like that makes it difficult to mount a chuck? Or is there some component(s) in the way?

Seems odd to me that a 7+ inch spindle hole wouldn't be at least "chuck ready." 'Course that's coming from oil field where everything has two chucks.

Most likely the tailstock is set up for a live center.In either case, parts would need to be customized. If not shipped as a sub-spindle then this becomes a custom job. I would need to see pictures. You're not giving a lot of info here. What's on the back end now, matters.

Paul
 

DouglasJRizzo

Titanium
Joined
Jun 7, 2011
Location
Ramsey, NJ.
I have not laid eyes on either of these machines. What does the end of the spindle look like that makes it difficult to mount a chuck? Or is there some component(s) in the way?

Seems odd to me that a 7+ inch spindle hole wouldn't be at least "chuck ready." 'Course that's coming from oil field where everything has two chucks.

The chuck actuator assembly is different and many times, the rear chuck is manual instead of power, so accommodations would have to be made.
 

alphonso

Titanium
Joined
Feb 15, 2006
Location
Republic of Texas
Sorry about the confusion. I used the term "rear chuck" to mean a chuck on the outboard end of the main spindle, not a tail stock or sub spindle chuck..

Like this:
DSCF0832.jpg
 

DouglasJRizzo

Titanium
Joined
Jun 7, 2011
Location
Ramsey, NJ.
Sorry about the confusion. I used the term "rear chuck" to mean a chuck on the outboard end of the main spindle, not a tail stock or sub spindle chuck..

Like this:
View attachment 342881

Yes, I know. :)

The rear chuck is frequently manually operated, although some are power.
The actuator, brake and other things that reside in the motor compartment would have to be adequately addressed for a rear chuck installation.
Certainly could be done, but if not done at the factory, then someone like Kitagawa or another company would have to do it.
 

alphonso

Titanium
Joined
Feb 15, 2006
Location
Republic of Texas
Laid eyes on one of the machines yesterday. Flange on end of spindle. Shouldn't be to hard to make an adapter for a manual 3 jaw.

Perusing the Doosan site and have a question. 5100B and 5100LB have the same capacities but the B weight listed is 3300 lbs heavier, longer and wider. Doesn't seem to follow usual nomenclature of "L" having more Z. Misprint?
 








 
Top