Sedgwick morticer - replacing collet with a chuck

[starcott]

I have an old Sedgwick morticer with a collet for holding the auger. Can anyone tell me if it is possible to replace this collet with a chuck, as fitted to the current Sedgwick model?

If so, is there anyone who has done this change who can tell me how to do it?

Thank you.

John

 

[ProShop]

I assume you mean the 571 model. I looked into this when I bought a s/h one some time ago now, and the problem was the
design of the chisel/motor mounting housing prevents the fitting of a standard 12mm 1/2" chuck. The later versions which have a chuck fitted had a redesigned housing.

If you have the engineering skills or prepared to have one made then it's doable .

 

[Bradshaw Joinery]

we had one made, iirc, was a tube that sleeved over the motor spindle and grub screwed on, then had a thread on the end for a chuck.

i might be able to find it simewhere as it was for a old machine.

 

[starcott]

Thank you, Olly, for that promising news.
How did you get the old collet off the motor spindle?
I suppose until I find out the motor spindle diameter I can't make any real progress.
When you say you may be able to find the old sleeve, does that mean it is no longer in use?

John

 

[Carlow52]

this looks like the multico mortiser I have and at the time of purchase I bought a chuck for it that was fitted onto a length of steel that had the same diameter as what the 1/4, 3/8, 1/2 " collets fitted into, tightened with the same grub screw as held the auger piece of the bit. if of interest I'll post a picture

 

[starcott]

Thank you for your offer to post a picture of your arrangement. However, if it means keeping the original collet and connecting the chuck into it, I don't have the room.
Distance between bottom of motor, and the housing for the bottom collet, is 4 inches. The existing top collet extends 2 and 1/2 inches.
As I see it, the only chance I have is to remove the existing collet and somehow fit a chuck directly onto the motor shaft, which is 19 mm diam.

John

 

[drawbore]

Hey John, realise this is an old thread but I have exactly the same situation / desire to upgrade to a chuck on my old 571 .... did you make any progress on this?