Kennametal Carboloy BOS40-EM2.31-0375 Tool Holder

Kennametal Carboloy BOS40-EM2.31-0375 Tool Holder is a precision end-mill holding solution designed for rigid milling applications. Part of the Carboloy BOS40 family, this holder secures an end mill through the BOS40/RS4E interface and carries the Command RS4E-0216 End Mill designation, signaling its compatibility with Kennametal’s tooling ecosystem. The BOS40-EM2.31-0375 model conveys a specific bore and clamping configuration intended to deliver stable tool seating and controlled runout, supporting accurate toolpaths and repeatable performance across multiple passes. It is suited for production environments where dependable retention and straightforward tool changes are essential, helping maintain dimensional stability and consistent chip evacuation. When selecting tooling, verify that the end mill shank size and length match the BOS40-EM2.31-0375 interface and your machine spindle specifications to ensure proper fit and optimal performance.