Brand: ATORN
Art.-no. 23333605
Manufacturer article no. 21044644
EAN 4050293407341
Individual prices for customers after login






Application
Produced using an innovative process, the ultra-slim hydro expansion chuck combines the advantages of an expansion chuck and a shrink-fit chuck in a single product.
Execution
- Extremely high clamping forces
- Extremely high temperature resistance (up to 120 °C) ensures that the chuck retains its accuracy
- Slim shrink-fit chuck-style design makes it suitable for narrow interference contours
- Excellent damping properties
- Max. concentricity < 0.003 mm
- Standard tool changes as with expansion chucks without requiring additional devices
- Reducer bushings enable various applications
- Balanced to G2.5/25,000 rpm
- With Balluff chip hole
Notes
The previous standard DIN 69871-1 was replaced by ISO 7388-1.
Delivery
1x ultra-slim SK30 or SK40 hydraulic expansion chuck (ISO 7388-1)
![]() | |
Brand | ATORN |
Tool holding device | SK 40 |
Clamping diameter (d) | 5 mm |
Projecting length (A) | 120 mm |
Form | AD/AF |
Outer diameter (D) | 49.5 mm |
Tapered diameter (d2) | 11 mm |
Diameter (d3) | 19.4 mm |
Clearance length to collar (l1) | 80 mm |
Clamp in depth (l2) | 28 mm |
Max. adjustment travel (max. V) | 8 mm |
Coolant supply | Internal |
Suitable for thread (G) | M2.5 |
Width across flats | 1.3 mm |
Balancing quality | G 2.5 at 25,000 rpm |
Concentricity tolerance | 0.003 mm |