Pro Grade Balanced CAT40 End Mill Tool Holder One Eighth Inch Bore 2.5 Inch Length 0.75 Inch Nose 5/8-11 Drawbar G2.5 20,000 RPM CNC Milling Ready Built Tough For Precision Jobs

Balanced CAT40 1/8 Bore End Mill Holder, single piece, 2.5in
✔️ CAT40 holder, 1/8 bore, 2.5 inch length, balanced at 20k RPM

This balanced CAT40 end mill tool holder is built for CNC milling, designed to secure 1/8" diameter end mills with precision. It's ideal for high-speed milling centers and automated production setups where consistent tool alignment and surface finish matter.

✅ Bore diameter: 1/8"
✅ Overall length: 2.5"
✅ Nose diameter: 0.75"
✅ Drawbar thread: 5/8-11
✅ Max RPM: balanced to G2.5 at 20000 RPM
✅ TIR: 0.0001"
✅ Material: 40CR
✅ Coolant through spindle capability

💡 What is a CNC end mill holder used for in high-speed milling? It secures cutting tools in a spindle, maintaining concentricity and reducing chatter for better surface finish.
- Tool retention and alignment
- High-speed stability and reduced spindle wear
- CAT40 taper with 5/8-11 drawbar compatibility