ER Collet Chuck
Material: alloyed steel
Hardness: HRC58-62
Taper Tolerance: At3
Usage: Boring, milling, drilling, tapping, grinding and engraving operation etc.
Features:
1.Tensile strength in the core at least 950 N/mm2.
2.Taper in tolerance quality AT3.
3.Angle of cone: 8° 17'50'' +5''.
4.Form ADB: interior coolant supply through centre (form AD) and through the collar (form B).