Omega BT40 ER Collet Chuck is a precision tool holder designed for BT40 spindle systems, built to deliver stable tool clamping and repeatable performance in milling and drilling tasks. It’s ideal for machinists and small-to-mid size shops that demand reliable accuracy at higher speeds.

• BT40 compatibility: Engineered for use with BT40 spindles to provide a secure, rigid interface for cutting tools.
• ER25 collet system: Securely clamps standard ER25 tooling, offering a versatile range of tool diameters with dependable grip.
• Speed range: Designed for 15,000–25,000 RPM, enabling efficient high-speed machining while maintaining stability.
• Gauge length: 150 mm gauge length for balanced rigidity and effective reach in typical machining setups.
• Precision ratings: G2.5 and G6.3 precision ratings indicate excellent concentricity and minimal runout for better cutting performance.
• Form AD: Form AD specification ensures compatibility with a wide ecosystem of BT40 tooling.

When you use the BT40 ER Collet Chuck, you benefit from tighter tool alignment, reduced runout, and more consistent hole positions and surface finishes across materials. The ER25 tooling compatibility supports a variety of cutters and drills, making tool changes practical on busy shop floors. With a robust BT40 interface and a 150 mm gauge length, this chuck maintains rigidity during demanding milling and finishing applications, helping you achieve precise results with each pass. Ideal for precision milling, pocketing, and finishing tasks in aluminum, steel, and plastics where repeatability and surface quality matter most.