R8 ER32 Collet Chuck Holder For Precision CNC Machining, Pro-Grade Heavy-Duty 42CrMo Alloy Steel, Heat-Treated To HRC 48-52, Ultra Low Runout TIR 0.0002 Inch, Superior Wear Resistance, Stable, Long-Lasting Tool Holder
✔️ Single Pack: heavy-duty 42CrMo steel, HRC 48-52, 0.0002 in TIR
R8 ER32 collet chuck holder is a heavy-duty tool holder designed for milling machines, ideal for precision milling, drilling, and cutting tasks in workshops and production floors. It uses high-density 42CrMo alloy steel and is heat-treated to HRC 48-52, delivering strong wear resistance and stable performance.
✅ Material: 42CrMo alloy steel with hardening to HRC 48-52
✅ Ultra-low TIR: runout within 0.0002 in to reduce tool vibration
✅ Clamping range: ER32 2mm-20mm (0.08"-0.787")
✅ Connection: R8 taper shank with 7/16"-20 UNC drawbar thread
✅ Max speed: up to 8000 RPM for milling and drilling tasks
💡 What is a R8 ER32 collet chuck holder used for in CNC milling, and how does it help performance?
This tool holder provides precise tool holding and reduces vibration during high-speed milling.
- low runout and stable clamping for ER32 tools
- R8 taper shank with 7/16-20 UNC drawbar for easy mounting
- supports up to 8000 RPM for high-speed milling
- helps achieve better surface finish by reducing tool vibration