The Omega BT40 ER Collet Chuck (Mini Type) is a compact, high-precision toolholder designed for BT40 spindle systems. It delivers reliable tool clamping, rapid ER collet changes, and consistent performance at high speeds up to 20,000 RPM.

• BT40 Mini Type design: Lightweight, balanced toolholder with a compact footprint to fit tight spindle envelopes.
• ER16 collet system: Quick, secure tool changes with a versatile range of cutting tools for diverse jobs.
• 20,000 RPM maximum: Suited for high-speed milling, drilling, and finishing applications.
• G2.5 precision: Tight concentricity and minimal runout for accurate machining and superior surface finish.
• 70mm gauge length: Stable support and rigidity for short tooling, enhancing accuracy and tool life.
• Form AD mounting: Standardized BT40 interface for reliable integration with compatible spindles and tooling systems.

This mini ER collet chuck is ideal for shops needing strong toolholding in a compact package. Its lightweight build reduces overhang, improving balance and reducing vibration in high-speed operations. The ER16 system enables efficient tool changes, helping to keep production cycles tight while delivering consistent runout control for precise cuts across steel, aluminum, and nonferrous materials. Whether you’re performing pocketing, contour milling, or precision drilling, this BT40 Form AD chuck offers dependable performance in a compact form factor that fits your BT40 spindle workflow.