C8 C10 C12 C16 C20 C25 C32 ER8 ER11 ER16 ER20 ER25 ER32 100 150L Collet Chuck Holder CNC Milling Lengthen Tool ER Extension Rod

C8 C10 C12 C16 C20 C25 C32 ER8 ER11 ER16 ER20 ER25 ER32 100 150L Collet Chuck Holder CNC Milling Lengthen Tool ER Extension Rod

Introducing the C8 C10 C12 C16 C20 C25 C32 ER8 ER11 ER16 ER20 ER25 ER32 100 150L Collet Chuck Holder CNC Milling Lengthen Tool with ER Extension Rod – the ultimate solution for precision machining, tool extension, and secure collet retention in demanding CNC environments.

Key Highlights

  • Universal compatibility with C‑size (C8‑C32) and ER‑size (ER8‑ER32) collet chucks.
  • Available in 100 mm and 150 mm length options for flexible tool reach.
  • High‑strength, heat‑treated steel construction ensures long‑lasting durability.
  • Precision‑machined ER extension rod delivers zero‑runout and stable torque transmission.
  • Easy installation – slide‑in design fits standard CNC spindle noses without additional adapters.
  • Optimized for high‑speed milling, drilling, and turning applications.

Product Benefits

Maximize your machining efficiency with a tool holder that provides a rigid, vibration‑free connection between the spindle and your collet. The extended length reduces the need for frequent tool changes, while the robust ER extension rod maintains concentricity, ensuring superior surface finish and dimensional accuracy.

Compatibility & Applications

This holder is engineered for a wide range of CNC machines, including vertical and horizontal milling centers, routers, and precision lathes. It seamlessly supports:

  • Standard C‑collets (C8‑C32) for small‑diameter workpieces.
  • ER‑collets (ER8‑ER32) for larger, high‑torque operations.
  • Tooling such as end mills, drills, reamers, and engraving bits.
  • Industrial sectors: aerospace, automotive, die‑and‑mold, and general manufacturing.

Technical Specifications

  • Material: High‑grade alloy steel (S45C) with CNC‑precision grinding.
  • Length Options: 100 mm / 150 mm.
  • Thread Type: M6 (standard CNC spindle interface).
  • Collet Size Range: C8‑C32, ER8‑ER32.
  • Maximum Torque: 120 Nm (150 mm version).
  • Operating Temperature: -20 °C to +200 °C.

Why Choose This Extension Rod?

When precision matters, trust a holder that delivers consistent performance day after day. Our ER extension rod’s tight tolerances eliminate wobble, reduce tool wear, and help you achieve tighter tolerances on every part.

Installation & Maintenance

Simply insert the holder into the spindle nose, tighten the retaining screw, and slide the appropriate collet into the ER extension rod. Routine cleaning with a soft brush and occasional lubrication of the thread will keep the system running smoothly for years.

Upgrade your CNC toolkit with the C8 C10 C12 C16 C20 C25 C32 ER8 ER11 ER16 ER20 ER25 ER32 100 150L Collet Chuck Holder and experience the difference that precision engineering makes.


Price: Original price was: $ 24.00.Current price is: $ 8.44.

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