Description
Precision SK40 Hydraulic Expansion Holder (Dia 20 x 90 mm)
Engineered for high-performance CNC milling and machining centers. The hydraulic pressure system ensures uniform concentric grip around cutting tool shanks, reducing chatter and increasing tool life.
- Taper Standard: SK40 (DIN 69871 / ISO 7388-1)
- Clamping Bore Diameter: 20 mm
- Projection Length (A-dimension): 90 mm
- Runout Precision: < 0.003 mm at 3xD
- Balancing Quality: G2.5 / 25,000 RPM
- Actuation: Simple T-handle hex wrench operation
- Application: Heavy finishing, reaming, drilling, and milling