Achieve sub-micron runout accuracy and superior surface finishes during high-precision machining with industrial-grade Hydraulic Arbors (VDI hydraulic expansion chucks). Built to strict DIN 69880 standards, these heavy-duty toolholders feature a serrated VDI shank paired with an internal hydraulic expansion sleeve. Activated by a simple side pressure screw, the hydraulic fluid chamber compresses uniformly around the inserted tool shank. This delivers massive, multi-bar clamping pressure and exceptional vibration-dampening characteristics, protecting delicate cutting edges and extending tool life during heavy cutting sequences.