Achieve exceptional machining stability and high-rigidity clamping with the KATSU Tools MT2 ER25 Collet Chuck Holder (SKU: 11024826). Specifically engineered for CNC milling machines, manual lathes, and drilling setups, this 2MT Morse taper tool holder features an imperial 3/8"-16 UNC rear drawbar thread, making it ideal for securing ER25 collets during precision milling, boring, and drilling operations.
Forged from high-grade 40Cr alloy steel and hardened to 45–48 HRC, this chuck holder undergoes precision grinding to deliver reliable concentricity and smooth rotation. The entire body is finished with a protective anti-rust zinc coating for enhanced wear resistance and extended service life under heavy industrial use.
High Precision & Rigidity: Fine-ground taper and internal bore maintain precise concentricity for smooth, low-vibration milling performance.
Premium 40Cr Steel Construction: Heat-treated and hardened to 45–48 HRC for maximum durability, high torque resistance, and long-term dimensional stability.
Corrosion-Resistant Zinc Plating: Electro-plated zinc coating over a fine-ground finish protects the tool holder from rust, coolant corrosion, and job-site wear.
Imperial Drawbar Thread: Features a standard 3/8"-16 UNC rear thread (1.59mm pitch, 9.53mm thread size) for positive drawbar locking on imperial milling spindles.
Versatile ER25 Clamping Capacity: Fits all standard ER25 collets and clamping nuts for holding end mills, drills, reamers, and boring tools on MT2 spindles.
| Specification Parameter | Performance Value |
|---|---|
| Brand | KATSU Tools |
| SKU | 11024826 |
| Tool Holder Taper | MT2 / 2MT (Morse Taper 2) |
| Collet Series Compatibility | ER25 |
| Drawbar Tail Thread | 3/8"-16 UNC (Imperial Drawbar) |
| Thread Pitch / Dimension | 1.59 mm Pitch / 9.53 mm Outer Diameter |
| Body Material | 40Cr Alloy Steel |
| Hardness Grade | 45 – 48 HRC |
| Machining Precision | High-Precision Fine Ground |
| Surface Finish | Precision Ground with Anti-Rust Zinc Plating |
| Clamping Nut Outer Diameter | 42 mm |
| Overall Length | Approx. 105 mm |
Milling & Turning Machinery: Fits MT2 spindle milling machines, CNC machining centers, and lathe tailstocks requiring ER25 collet clamping.
Toolholding Versatility: Securely clamps straight-shank end mills, drills, taps, reamers, and engraving cutters.
Collet Installation: Always snap the ER25 collet into the clamping nut at an angle before screwing the nut onto the holder.
Drawbar Engagement: Ensure the 3/8"-16 UNC drawbar is cleanly threaded and torqued into the rear thread before powering up the spindle.
Maintenance: Clean taper surfaces and internal collet cavity before mounting to preserve optimum clamping accuracy.