High Precision ER20 Collets

ER20 Collet

High-Precision Tool Holding for CNC Spindles & ATC Systems

Overview
This high-precision ER20 collet is designed for reliable, repeatable tool holding in CNC spindle and ATC applications. Proper tool holding is just as critical as the cutting tool itself, and a quality collet directly affects surface finish, tool life, and overall machine performance.

Each Cyclone Bits ER20 collet is precision-ground and hardened to ensure consistent clamping force and minimal runout, making it an excellent choice for hobby, prosumer, and light industrial CNC machines.

Why This Collet Matters

• Reduces tool runout for cleaner cuts and longer bit life

• Maintains consistent grip at high spindle RPMs

• Essential for accurate tool length and diameter repeatability

• Suitable for both manual tool changes and ATC systems

Performance Expectations

• Runout Accuracy: ±0.0002" (±0.005mm)

• Designed for high-speed spindle operation

• Balanced for stable performance at elevated RPM

Compatible Systems

• ER20 spindle motors

• ISO20 tool holders using ER20 collets

• Manual tool change (MTC) setups

• Automatic Tool Changer (ATC) systems

Best Practices

• Always match collet size exactly to the tool shank

• Clean collet and nut before installation

• Replace collets showing wear or inconsistent clamping

• Avoid overtightening, let the taper do the work

Specifications

• Collet Type: ER20

• Material: Hardened, precision-ground steel

• Application: CNC routing, carving, and machining

Notes

• Collets are consumable precision components

• Proper collet condition directly impacts cut quality and spindle health