The Anycubic Kobra 3 Series / Kobra 3 Max Quick Release Hotend with 0.4mm Nozzle is the official OEM quick-swap thermal melting unit engineered for the Kobra 3, Kobra 3 Combo, and Kobra 3 Max 3D printers. Designed to support fast printing speeds (up to 600 mm/s) and multi-color tool changes with the ACE Pro system, this unit combines an all-metal thermal break, ceramic heating core, and a quick-release locking mechanism into a lightweight assembly.
Lever-Lock Quick-Release System: Utilizes a dual-spring lever locking mechanism that allows users to swap hotends or nozzle sizes in seconds without tools, heat-tightening, or disassembling the toolhead.
300°C High-Temperature Rating: Equipped with an aerospace-grade ceramic composite throat tube and all-metal hotend block rated up to 300°C, accommodating PLA, PETG, TPU, and engineering-grade filaments like ABS and ASA.
High-Flow Thermal Response: Incorporates a high-power wrap-around ceramic heating block for rapid thermal recovery during high-speed printing (up to 600 mm/s) and fast preheating routines.
Standard 0.4 mm Brass Nozzle: Integrated factory 0.4 mm nozzle size optimized for standard layer heights (0.12mm - 0.28 mm) and default Anycubic Slicer profiles.
Pre-Assembled Assembly: Comes complete with pre-installed thermistor, heater wiring harness, quick-connect terminal plug, and a silicone insulating boot.
Wait for Cool-Down: Always allow the nozzle temperature to drop below 40°C before engaging the lever lock to replace the unit to avoid burns.
Keep the Silicone Sock Attached: Always keep the custom black silicone insulator installed over the heating block. Operating without the boot lets cooling airflow from the part fans destabilize temperature readings, causing thermal runaway errors.
Run PID Auto-Tuning: After swapping to a new module, perform an Auto PID Calibration from the touchscreen menu to calibrate temperature response for tight temperature control.