ISO 20 ER Collet Toolholders (for Colombo spindle automatic tool changers, shipped with collet nuts and pull studs)
- Balanced to 40,000 RPM @ G2.5 (Inspection Report included for accuracy and balance)
- Internal (collet) Taper : 8°
- Surface Roughness Rz 2.5
- Degree of concentricity exceeds the DIN standard. 100% examined to 0.0002" TIR
ISO 20 x ER 16 - 52mm Ultra-precision Toolholder (incl. HS mini nut & stud)..
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