Mini collet chuck ER
• Alloyed case-hardened steel, tensile strength 950 N/mm²
• Hardened 58 ± 2 HRC, hardness depth min. 0.5 mm
• Taper angle tolerance AT3
• Concentricity < 0.01 mm
• Weighted G6.3 15,000 min-1
• DIN 69893
• Form A
• Internal cooling