SK40 25mm Hydraulic Chuck x 80.5mm Gage Length, TSC
Part # 04-0921SK40-HC-25-80.5MM
* All prices and specifications subject to change without notice. Actual product appearance & included accessories may differ.
Description
This SK40 \ DIN 69871 hydraulic milling chuck has a 25mm bore diameter and a 80.5mm gage length. The chuck accepts precision straight-shank collets (optional) to reduce the bore and hold smaller diameter tools. The hydraulic fluid within the chuck compresses to provide equal pressure around the cutting tool shank, providing high grip strength, low runout, and excellent damping properties. It is through-tool coolant (TSC) capable, with a M16x2.0 pull stud/retention knob thread.Download documents
Technical specifications
System of Measurement | Metric - ISO |
Item | Hydraulic Chuck |
Taper | SK40 \ DIN 69871 |
[ØD] Bore Diameter | 25.0 mm |
[ØBD] Body Diameter | 72.0 mm |
[GL] Gage Length | 80.5 mm |
[BL] Body Length | 25.5 mm |
[LSCX] Maximum Clamping Length | 48.5 mm |
[OAL] Overall Length | 148.9 mm |
Concentricity | 0.003 mm |
Balanced to RPM | 25000 |
Retention Knob Thread Size | M16-2.0 |
Through Tool Coolant | Yes |
Screw | TS6 |
Spindle Drive Slots | Yes |
Weight | 4.2 lbs \ 1.9 kg |
Country of Origin | China |
Technical Images

Enlarge Line Drawing & Specs
Note:
Hydraulic holders that exceed 2.5" (63mm) [ØBD] Body Diameter need to be defined as a "Large Tool" in the Haas Control depending on your tool changer.




