Collet chuck holder for a lathe

piscov

piscov

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Collet chuck holder for a lathe: what to choose and how to install?

Hello all,

I want to buy a collet chuck set and a collet chuck holder for a mini lathe I have.

I have started machining just 2 month ago and I have never seen a collet chuck mounted on a lathe, so I have doubts on what should I buy and how can the different choices be installed on the lathe.

I was looking for 2 types of holders, My lathe has a MT3 head stock :


  1. Collet chuck with a MT3 shank
MT3_ER_collet_drawbar_2.jpg

Is that rear part that treads on the MT3 shank mandatory or can I use the collet holder just fitted in the lathe without it and the centrifugal force will hold the holder in place??

Will this work well and allow me to produce more concentric and accurate pieces or solution 2 is far better?

2. Collet holder plate


Will this fit directly or I will need any kind of plate adapter?
Will this work better that solution 1?


I more inclined to buy the solution 1 because the holder is included in some sets at a better price.


  • About collet quality, what should I be aware off? Cast or aluminium? I dont want to buy bad chinese quality but I would like to spend as little as possible.
I am only working with plastics, acrylics and hard rubber.

Thank in advance for your help.
Best regards

Vasco
 
In the first picture the rod goes all the way through and sticks out the back of the spindle. Tightening the nut on that end is what pulls the collet in tightly to the chuck, securing the work. so if it doesn't fit through your spindle then it won't work for you.

What type of attachment is your spindle - threaded, L-00, D-?? You can buy 5C collet chucks and backplates to match just about anything in the regular sizes.

If you let us know your model of mini-lathe there are probably a few dozen other owners who are using collets and they can tell you what they got.
 
joe_m said:
In the first picture the rod goes all the way through and sticks out the back of the spindle. Tightening the nut on that end is what pulls the collet in tightly to the chuck, securing the work. so if it doesn't fit through your spindle then it won't work for you.

What type of attachment is your spindle - threaded, L-00, D-?? You can buy 5C collet chucks and backplates to match just about anything in the regular sizes.

If you let us know your model of mini-lathe there are probably a few dozen other owners who are using collets and they can tell you what they got.
Click to expand...


The sets I have seen selling on the internet are not sold with that rod. This is the only picture I have seen with it. I'm not sure that it is mandatory to use and maybe I can make and cut one with the correct size if really needed.

My lathe is an Optimum 180X300. I think its a chinese made lathe from a german manufacturer. I dont know what type of attachment it has.... How can I check that??

Thanks for you help!

3420301_12_250108.jpg
 
joe_m said:
What type of mount does your current chuck use? Is it listed in the manual? I looked online and found a page with a few specs and they mention they also sell a collet chuck and set that fits:

http://www.optimum-machines.com/products/lathes/d-180-x-300-vario/index.html
Click to expand...

Sorry, I am not a native english speaker... so I may be responding wrongly.

I know they have a collet plate that fits, but I was trying to find an after market cheapper solution... and understant if the taper holder will work as well as the plate....

I have a 3 jaw chuck mounted now. I also have a 4 jaw chuck that fits.

The manual does not say nothing about the spindle, only basic info:

[TABLE="class: gray"]
[TR="class: mark, bgcolor: #BBBBBB"]
[TH="colspan: 99"]Technical data[/TH]
[/TR]
[TR="bgcolor: #EEEEEE"]
[TD]Motor power[/TD]
[TD]600 W 230 V ~50 Hz[/TD]
[/TR]
[TR="bgcolor: #EEEEEE"]
[TD]Center height[/TD]
[TD]90 mm[/TD]
[/TR]
[TR="bgcolor: #EEEEEE"]
[TD]Center width[/TD]
[TD]300 mm[/TD]
[/TR]
[TR="bgcolor: #EEEEEE"]
[TD]Turning diameter (max.)[/TD]
[TD]180 mm[/TD]
[/TR]
[TR="bgcolor: #EEEEEE"]
[TD]Ø circulation via slide[/TD]
[TD]110 mm[/TD]
[/TR]
[TR="bgcolor: #EEEEEE"]
[TD]Spindle speed[/TD]
[TD]150 - 2,500 rpm[/TD]
[/TR]
[TR="bgcolor: #EEEEEE"]
[TD]Number of steps[/TD]
[TD]2 steps[/TD]
[/TR]
[TR="bgcolor: #EEEEEE"]
[TD]Spindle taper[/TD]
[TD]MT 3[/TD]
[/TR]
[TR="bgcolor: #EEEEEE"]
[TD]Spindle hole[/TD]
[TD]21 mm[/TD]
[/TR]
[TR="bgcolor: #EEEEEE"]
[TD]Passage 3-jaw chuck[/TD]
[TD]20 mm[/TD]
[/TR]
[TR="bgcolor: #EEEEEE"]
[TD]Bed width[/TD]
[TD]100 mm[/TD]
[/TR]
[TR="bgcolor: #EEEEEE"]
[TD]Top slide - travel[/TD]
[TD]55 mm[/TD]
[/TR]
[TR="bgcolor: #EEEEEE"]
[TD]Compound slide - travel[/TD]
[TD]75 mm[/TD]
[/TR]
[TR="bgcolor: #EEEEEE"]
[TD]Tailstock taper[/TD]
[TD]MT 2[/TD]
[/TR]
[TR="bgcolor: #EEEEEE"]
[TD]Tailstock sleeve travel[/TD]
[TD]65 mm[/TD]
[/TR]
[TR="bgcolor: #EEEEEE"]
[TD]Longitudinal feed[/TD]
[TD]0.1/0.2 mm/rev[/TD]
[/TR]
[TR="bgcolor: #EEEEEE"]
[TD]Pitch - Metric (11)[/TD]
[TD]0.5 - 3 mm/rev[/TD]
[/TR]
[TR="bgcolor: #EEEEEE"]
[TD]Pitch - Inch (8)[/TD]
[TD]44 - 10 threads/1“[/TD]
[/TR]
[TR="bgcolor: #EEEEEE"]
[TD]Quadruple tool holder Seat height .[/TD]
[TD]8 mm[/TD]
[/TR]
[TR="bgcolor: #EEEEEE"]
[TD]Dimensions (L x W x H)[/TD]
[TD]830 x 396 x 355 mm[/TD]
[/TR]
[TR="bgcolor: #EEEEEE"]
[TD]Net weight[/TD]
[TD]55 kg[/TD]
[/TR]
[/TABLE]

Optimum lathe.jpg

Optimum lathe.jpg
 
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