Morse Taper 5 ER32 CNC Tool Holder, 40Cr Steel Milling Chuck with M20x2.5 Thread, Rigidity Lathe Accessory for Heavy Duty Drilling and Boring

Item Type: CNC Milling Tool HolderModel: MTB5-ER32(M20)Material: 40CrPurpose: Used for operations on CNC machine tools, etc.Hardness: HRC45-48Handle Length: Approx. 185mm / 7.3inDiameter of Big Head of Taper Handle: Approx. 35mm / 1.4inModular Taper Handle: MTB5Tail Thread: M20x2.5PApplicable Nut: ER32Package List：1 x CNC Milling Tool Holder

• Industrial-Alloy Durability: Forged from heat-treated 40Cr alloy steel with triple-stage induction hardening (HRC45-48) for chip-resist performance in 10,000 RPM operate; The nitrided surface treatment extends tool life 2X compared to standard 7316 chucks; Maintains size stability within 0.003mm during continuous heavy milling cycles
• Accurate Tool Retention System: ER32 collet interface achieves 0.005mm runout tolerance through CNC-ground MT5 taper surfaces; Accommodates shanks from 2-25mm with 360° uniform clamping force; The internal coolant channels (4mm diameter) enable through-tool lubrication for alloy machining
• Universal Spindle Compatibility: Features M20x2.5P threaded shank and 35mm taper base for seamless integration with tool changers; Direct replacement for obsolete B-ER chucks on CNC systems; Anti-vibration flutes reduce harmonic chatter in deep-cavity die casting mold
• Big-Torque Transmission Design: The extended 185mm shank provides 30% increased leverage for 250N·m tightening force applications; The embossed grip zones provide slip-no handling during collet changes; Pre-balanced to standard for 5-axis aerospace component machining
• Multi-Process Versatility: Supports simultaneous mounting of 32mm end mills, 20mm taps, and carbide boring bars via rapid collet swaps; The flat tail design prevents rotation in gang-tool lathe turrets; Complies with standards for workshop interoperability