Self-centring, independent, big-bore and power chucks that grip true and hold under cut.
Manual and power workholding for lathes and machining centres, from Seco Gold scroll chucks to the Unnat and Shasons range built since 1959. Sized 80 to 630 mm, in cast iron, SG iron or steel bodies.
3, 4 and 6-jaw, 80 to 630 mm, reverse and forward jaw sets. Runout under 0.04 mm from 160 mm up.
ISI-marked scroll chucks with hardened, ground jaw ways and interchangeable parts.
Each jaw set separately for off-centre and irregular work.
Larger through-bore for bar and pipe work.
For CNC lathes, with open and closed-centre cylinders and safety-valve options.
Fast, concentric bar work.
| Chuck type | Jaws | Sizes | Best for |
|---|---|---|---|
| Self-centring scroll | 3 / 4 / 6-jaw | 80 to 630 mm | Round and hex stock, mass production |
| Independent | 4-jaw | Mid to large | Off-centre, square, irregular parts |
| Power / hydraulic | 2 / 3-jaw | CNC sizes | High-speed CNC production |
| Soft-jaw (base hard, top soft) | 3-jaw | Mid | Repeatable precision location |
Hardened, ground jaw ways and precision scrolls hold concentricity cut after cut.
Unnat is ISI-marked and building chucks since 1959, with fully interchangeable spares.
We spec the mount (spindle nose, back plate, cylinder) to your machine.
Hard, soft, big-bore and independent, so the chuck fits the part.
