Omega BT40 Shrink Fit Chuck with Front Face Coolant is a robust toolholding solution for BT40 spindles, engineered to deliver strong clamping and rigid tool control across high‑speed milling and drilling tasks. The integrated front-face coolant channels actively cool the cutting zone, helping maintain precision and extend tool life even under heavy loads.

Compliant with BT MAS403 (JIS 6339) standards and Form AD/B, this chuck features a precise 4.5-degree interface and is balanced to G2.5 @ 25,000 RPM for reliable, smooth performance. It is designed for an 18 mm tooling interface with an overall length of 160 mm, making it a ready‑to‑fit choice for BT40 setups that demand consistent results.

• Integrated Front Face Coolant: Front‑facing coolant channels direct cooling to the cutting edge, lowering temperatures, reducing thermal distortion, and helping extend tool life during high‑speed machining.
• Precise Shrink-Fit with 4.5° Interface: A tightly engineered 4.5‑degree contact interface balanced to G2.5 at 25,000 RPM delivers secure seating, minimal runout, and stable performance in demanding operations.
• BT40 MAS403/JIS 6339 Form AD/B Compliance: Built to standard BTMAS403 (JIS 6339) Form AD/B, ensuring reliable interchangeability with BT40 tooling and consistent, predictable results across setups.

This combination of secure shrink‑fit clamping, active cooling, and strict standard compliance translates into faster setup, lower downtime, and repeatable accuracy across production runs. It helps you maintain better surface finishes, reduce tool wear, and keep workflows running smoothly at up to 25,000 RPM.