NMTB40 End Mill Holder 3/8" x 2.31", Hardened Precision Tool Holder for CNC Milling Machines, Balanced for High-Speed Applications

The GS Tooling NMTB40 3/8" x 2.31" End Mill Holder is engineered for secure and accurate tool holding in high-performance CNC machining. Designed to hold 3/8"-inch shank end mills, this holder features a 2.31"-inch gage length and a precision-machined bore for optimal concentricity and reduced vibration.Manufactured from high-grade alloy steel, the holder is hardened and ground to ensure long-lasting durability and stable performance under demanding conditions. Perfect for CNC milling, this NMTB40 tool holder is balanced to reduce runout at high spindle speeds and is compatible with all standard NMTB40 spindles.Key Features:Accepts 3/8" shank end mills with a 2.31" projection lengthPrecision-ground bore for maximum clamping force and accuracyConstructed from hardened alloy steel for extended wear resistanceIdeal for high-speed CNC milling and general machining tasksCompatible with standard NMTB40 spindles and tool changers

• Precision Tool Holding: Designed to securely hold 3/8"-inch shank end mills with a 2.31"-inch projection, ensuring minimal runout and maximum accuracy.
• Hardened Alloy Steel Construction: Made from heat-treated alloy steel for high strength, wear resistance, and long service life.
• Balanced for High-Speed Use: Engineered for reduced vibration and improved spindle performance in high-RPM CNC milling operations.
• Standard NMTB40 Taper: Compatible with all NMTB40 spindle machines and automatic tool changers used in milling centers.
• Ideal for CNC and Manual Mills: Suitable for high-performance machining in steel, aluminum, and other industrial materials.