new jaws

[hpe]

hi i have a cyclone and i need some external jaws for it ...i cannot see any manufacturer on the chuck just the numbers H13665 its 125mm with 35mm through hole 95mm recess

the jaws have 716 stamped on them

does anyone know what chuck i have and where to get jaws

cheers

[jamesgates1000]

Mine was fitted with a Pratt Burnerd 125mm chuck with the same dimensions that you have.

I need hard jaws also, I found these on ebay...

https://www.ebay.co.uk/i/362560172564?chn=ps

I bought a nice new two piece jaw chuck for mine from cutwel for just over £300

https://www.cutwel.co.uk/workholding/sc ... 275-series

[hpe]

thank you

do you or anyone know the taper on the spindle which locates the backplate for a chuck ?

[DavidB]

The data for the Cyclone here viewtopic.php?f=33&t=3823 says the spindle is A2 3" and some data here about the dimensions https://www.lathes.co.uk/spindlenose/spindlenoses.pdf . From memory the taper is 1 in 4 on diameter but worth a bit of simple trigonometry to check against the taper shown.

[Lone_Ranger]

Could possibly be a Bison/Toolmex chuck, if you measure one of your jaws up, length, width, slot and screw pitch and go to the Rotagrip site there is a fair chance you will find the right jaws for your chuck, I got all my stuff from them when I had my 2 Cyclones a few years ago. Link here :-

https://www.rotagriponline.com/index.php ... &Itemid=29

Regards
Rob