The Omega BT40 Hydraulic Expansion Chuck HC12S is a precision toolholding solution engineered for BT40 spindle systems. With a 58mm gauge length (Form AD) and a maximum speed rating of 25,000 RPM, it is well suited for high‑speed milling, drilling, and finishing tasks where consistent accuracy matters.

The hydraulic expansion mechanism enables quick tool changes and a secure, uniform grip, helping to minimize vibration and maintain precise cuts across a range of materials and applications.

• High‑Speed Performance: Engineered to run up to 25,000 RPM for fast, productive machining while maintaining stable toolholding and clean results.
• Precision Concentricity: G2.5 rating delivers minimal runout and tight concentricity, enabling repeatable tolerances and better part quality.
• Hydraulic Quick‑Change Clamping: Hydraulic expansion provides fast tool changes with a secure grip, reducing downtime and preserving cutting efficiency.

This BT40 hydraulic expansion chuck supports demanding operations with dependable clamping force and durable construction. It helps you streamline setups, sustain productive cycles, and achieve reliable results across diverse machining tasks—making it a trusted choice for shops aiming to improve throughput and consistency without compromise.