Description
Robust BT40 Hydraulic Expansion Holder (Dia 20 x 72.5 mm)
Engineered for versatile CNC production milling and finishing. Combines high holding torque with fluid-dampened vibration reduction to prevent tool wear and chatter marks on finished parts.
- Taper Standard: BT40 (MAS 403 / JIS B 6339)
- Clamping Bore Diameter: 20 mm
- Projection Length (A-dimension): 72.5 mm
- Runout Precision: < 0.003 mm at 3xD
- Balancing Quality: G2.5 / 25,000 RPM
- Actuation: Hex key clamping without external power units
- Application: End milling, drilling, reaming, and finish profiling