Written by 
Upgrade your machining precision with the ER25 ER32 ER40 Extension Straight Shank – a versatile collet chuck holder designed for seamless integration with C‑series collets (C16, C20, C25, C32). Available in 100 mm, 150 mm, and 200 mm lengths, this extension delivers the rigidity and accuracy you need for high‑performance CNC milling, drilling, and grinding applications.
Product Overview
The ER25/ER32/ER40 Extension Straight Shank provides a robust, straight‑shank connection between your spindle and collet system. Engineered from high‑grade steel, it ensures stable torque transmission and minimal run‑out, making it the ideal choice for both prototype development and production‑level machining.
Key Highlights
- Three standard lengths: 100 mm, 150 mm, 200 mm for flexible setup options.
- Compatible with ER25, ER32, ER40 collet series and the matching ER25UM, ER32UM, ER40UM nuts.
- Supports C‑series collets: C16, C20, C25, C32 for a wide range of tool diameters.
- Precision‑ground straight shank for reduced vibration and improved surface finish.
- Heat‑treated for enhanced durability and long‑life performance.
- Easy to install with a simple push‑in or screw‑in method.
Compatibility
This extension is fully compatible with:
- ER25, ER32, and ER40 collet chucks.
- Standard CNC spindles that accept a straight‑shank collet holder.
- All major CNC brands and machine tools that use the ER collet system.
Benefits of Using This Extension
- Increased Reach: Extend your tool length without sacrificing rigidity.
- Improved Accuracy: Straight‑shank design minimizes deflection for tighter tolerances.
- Versatile Tooling: Switch between C16‑C32 collets quickly for diverse machining tasks.
- Cost‑Effective: One extension covers multiple collet sizes, reducing inventory needs.
Installation & Use
Installing the extension is straightforward:
- Insert the straight‑shank extension into the spindle taper.
- Secure with the matching ER25UM / ER32UM / ER40UM nut using a torque wrench (recommended 10‑12 Nm).
- Mount your chosen C‑series collet and tool, then tighten to the specified torque.
Why Choose Our ER Extension?
- Precision engineering meets rigorous quality control.
- Backed by a 12‑month warranty for peace of mind.
- Fast shipping and responsive technical support.
Technical Specifications
- Material: High‑strength alloy steel (heat‑treated)
- Lengths: 100 mm, 150 mm, 200 mm
- Thread: Standard ER25/ER32/ER40 nut thread
- Collet Compatibility: C16, C20, C25, C32
- Finish: Black oxide coating for corrosion resistance
- Weight: Approx. 0.45 kg (100 mm), 0.65 kg (150 mm), 0.85 kg (200 mm)
Enhance your machining capabilities today with the reliable and precise ER25 ER32 ER40 Extension Straight Shank. Order now and experience the difference in performance and flexibility.
Price: Original price was: $ 26.90.$ 19.10Current price is: $ 19.10.