The Omega BT40 Combi Shell Mill Arbor (COMBI27) is a versatile mounting solution for shell milling cutters on BT40 spindles. Designed for high-speed machining, it maintains stability and accuracy up to 15,000 RPM, helping you achieve consistent finishes across a range of materials.

With a 100 mm gauge length and a precision balance grade of G6.3, this arbor delivers predictable cutting behavior and reduced runout, so you can trust it for pocketing, profiles, and finishing passes on busy shop floors.

• High-Speed Stability up to 15,000 RPM: Engineered for shell milling on BT40 spindles, this arbor maintains tight runout and rigidity at top speeds to deliver consistent finishes and reliable tool life.
• Precision Balancing G6.3 for Smooth Operation: Balancing class G6.3 minimizes vibration and chatter, reducing wear on cutters and spindles for longer tool life and accurate results.
• 100 mm Gauge Length for Enhanced Reach and Rigidity: The 100 mm gauge length improves cutter engagement stability and resists deflection, enabling cleaner pockets and more predictable performance in demanding cuts.

With the COMBI27 BT40 Combi Shell Mill Arbor, you gain a dependable, easy-to-use solution that supports fast setups, consistent results, and improved workflow in shell milling applications. The secure BT40 interface, high-speed capability, and balanced design help reduce downtime and deliver reliable performance across a wide range of materials and programs.