Top Shelf Cat40 Er20 Collet Chuck Tool Holder With Rock Solid G2.5 Balance Rating And Slick Precision Tolerances Crafted For Heavy Duty Milling And Smoother High Speed Machining Runs Up To Twenty Five Thousand RPM

CAT40 ER20 Collet Chuck Tool Holder Spindle Mount
✔️ G2.5 balance at 25kRPM, sub.005mm runout limit

This CAT40 spindle interface clamp secures end mills and drills through an ER20 sleeve system. Machine shops rely on this handy single piece setup for heavy duty routing, deep slotting, and rapid feed cutting where steady power transfer matters most.

✅ Fits standard CAT40 pull stud stations for direct spindle mounting
✅ Accepts tool shanks from 1mm (.039in) to 13mm (.512in) using the ER20 range
✅ Measures 2.5 inch (63.5mm) overall length with a flat 2.5 inch gage line
✅ Rotates smoothly up to 25000RPM while holding a G2.5 balance grade
✅ Keeps radial run out tighter than 0.005mm (.0002in) accuracy
✅ Ready to tighten down with a standard UM retaining locking nut

💡 What helps a high speed spindle taper holder maintain accuracy during roughing passes?

The right mounting design grabs your cutters solidly while keeping heat and vibration managed.

- tough steel bodies hold onto shanks tight so you never lose your grip mid pass - smooth balance keeps wobble out of the mix so finishes stay crisp every time - knurled thumb nuts slap off quick so you can swap bits faster without chasing clearance - snug matching tapers lock deep so the setup wont bounce back during heavy bites ✝️