Cat40 To Er32 Collet Chuck, Milling Workhorse, 2.76 Inch Projection, Balanced To 20,000 RPM At G2.5, Premium Alloy Steel HRC 52 To 56, 0.0002 Inch TIR, CNC Tool Holder

High-precision CAT40 to ER32 collet chuck for CNC milling
✔️ Balanced to 20k RPM at G2.5; 2.76 in (70.1 mm) projection; 1 pc

The CNC tool holder features a CAT40 shank with ER32 collet capacity, ideal for secure use with medium to large cutting tools in CNC milling centers. Crafted from premium alloy steel hardened to HRC 52-56 and ground to tight AT3 taper accuracy, it delivers reliable performance under demanding shop conditions. With factory balance up to 20,000 RPM, it maintains stable spindle operation and longer tool life. Projection is 2.76 inches (70.1 mm).

✅ CAT40 shank with ER32 capacity; tool range 3/32 to 25/32 in (2.38-19.84 mm)
✅ TIR ≤ 0.0002 in (0.0051 mm) from taper to face
✅ Balance: factory balanced to 20,000 RPM (G2.5)
✅ Projection: 2.76 in (70.1 mm); drawbar thread 5/8-11
✅ Hardness: premium alloy steel, HRC 52-56

💡 What is a collet chuck used for in CNC milling?

Collet chucks grip cutting tools tightly in the spindle, enabling precise milling.

• They allow quick tool changes while keeping alignment
• ER32 compatibility covers a broad range of cutter sizes
• They help minimize runout for accurate cuts in various materials