A question for the chuckists

[8ob]

A question for the collective. I am struggling to find a tilting rotary turntable with a three jaw chuck that has bolt in jaws. What is the correct name for this type of chuck? Help on this or where I can find a tilting rotary table with this type of chuck would be much appreciated

Bob

 

[sako243]

If you search for Shars (the name on your picture) they don't seem to be called anything special.

Any reason why they have to be bolt in?

Most tilting tables I've seen just have a back plate so you can bolt what you want.

E.g. https://www.ebay.co.uk/i/362011676158

 

[Seadog]

Try searching for 2-piece jaws.

 

[Brad93]

Yeah they’re just two piece reversible jaws.

 

[8ob]

I need to make a set of bolt in jaws for a piston fixture a bit like the one below. Its for machining valve pockets into piston crowns .

 

[Brad93]

I need to make a set of bolt in jaws for a piston fixture a bit like the one below. Its for machining valve pockets into piston crowns .

I see.

 

[Brad93]

Bison is quality made in Poland stuff.

https://www.cutwel.co.uk/workholdin...roll-chuck-2-piece-jaw-front-mount-3275-bison

 

[northwest]

I would give Barry a call at Gloster Tooling EBAY STORE and see what he has in stock or what is coming into stock. I have bought some excellent quality chucks from him in the past and I strongly suspect the HDC chucks have something to do with Bison. Best deal I ever got was the three jaw on a 1-4 camlock. All steel two piece jaws, lovely thing and very accurate. <sigh> those were the days....

 

[Shox Dr]

Can you not make a fixture like I did for the sunbeam pistons

 

[Kram]

Bore out a split collet to hold the piston in a normal chuck?

Chinese chucks and the Shars rebrand are made by Sanou
www.ebay.co.uk/itm/SANOU-K11-160A-Lathe-Chuck-3-Jaw-160mm-Self-Centering-Reversible-Jaw-Lathe-Parts/373028719729
I want one but the jaws look weak.

 

[8ob]

I would give Barry a call at Gloster Tooling EBAY STORE and see what he has in stock or what is coming into stock. I have bought some excellent quality chucks from him in the past and I strongly suspect the HDC chucks have something to do with Bison. Best deal I ever got was the three jaw on a 1-4 camlock. All steel two piece jaws, lovely thing and very accurate. <sigh> those were the days....

Thats worth a try

Can you not make a fixture like I did for the sunbeam pistons

Just looked, nice work Mr Shox but I will be doing dozens of V8 pistons at a time and thought set up would be much quicker, accurate and repeatable with this set up.

Bore out a split collet to hold the piston in a normal chuck?

Chinese chucks and the Shars rebrand are made by Sanou
www.ebay.co.uk/itm/SANOU-K11-160A-Lathe-Chuck-3-Jaw-160mm-Self-Centering-Reversible-Jaw-Lathe-Parts/373028719729
I want one but the jaws look weak.

Thats the kind of chuck but a bit spendy, what do you mean by bore out a split collet?

Bob

 

[Brad93]

Just buy a bison and know you’ve got a quality chuck

 

[dobbslc]

What's @8ob up to now?

 

[8ob]

What's @8ob up to now?

Went shopping a while ago and need to start nailing things together as soon as the mancave extension is finished

This is only a fraction of it

 

[Kram]

Thats the kind of chuck but a bit spendy, what do you mean by bore out a split collet?

Bore a peice of aluminium to the piston OD and put a slit in it. It will hold the piston better than chuck jaws and can go in normal chuck.

 

[roblane65]

What V8 are you building ? I love V8's

 

[8ob]

Bore a peice of aluminium to the piston OD and put a slit in it. It will hold the piston better than chuck jaws and can go in normal chuck.

I see what you mean but it wont work because the pistons are not round, they are oval . Thats why they need to be gripped in the ring land, its the only place on the piston that is round.

Bob

 

[8ob]

What V8 are you building ? I love V8's

Small and big block fords.

 

[roblane65]

going in anything special !

 

[Parm]

A question for the collective. I am struggling to find a tilting rotary turntable with a three jaw chuck that has bolt in jaws. What is the correct name for this type of chuck? Help on this or where I can find a tilting rotary table with this type of chuck would be much appreciated

Bob

I’ve got a 3 jaw chuck at home with holes drilled like that. Chuck is between 16 and 20” diameter and the holes are about 20mm diameter. They had some sort of threaded conduit

yours if you want it