General description High-quality BT30-ER32-70 Milling Collet Chuck made from durable 20CrMnTi material, offering high hardness and wear resistance. This tool holder is widely used for clamping various cutting tools such as cutters, drills, and reamers. It features a speed capability of up to 25,000 RPM and is designed to withstand significant impact and load, ensuring strong toughness and superior clamping force without looseness or deformation. Technical specifications Model: BT30-ER32-70 Use: CNC machining Working length of tool post: approximately 70mm Nut diameter: approximately 50mm Spindle taper: 7/24 Speed: 25,000 U/min Main body accuracy: 0.002-0.005mm Coaxiality: less than 0.005mm Overall clamping accuracy: 0.002-0.005mm Hardness: 52-58 HRC Color: Silver Material: 20CrMnTi Package Contents 1 x BT30-ER32-70 Milling Tool Holder Other information