Anycubic SP Kobra S1 Max/S1 Max Combo Quick-swap Hardened Steel Nozzle 0.25mm

Order Code: 31348

Order Code: 31348

Stock Level: Available in 8 weeks

Price €17.99

Tool-Free Quick-Swap Architecture: Designed with Anycubic's toolless latch/clip mechanism, allowing hotends to be swapped out in seconds without requiring hex keys or disassembling the printhead shroud.
Hardened Steel Nozzle Construction: Offers up to 6x the lifespan of standard brass nozzles. Resists severe abrasion caused by carbon-fiber, glass-fiber, wood-filled, glow-in-the-dark, and composite materials.
Titanium Alloy Throat Tube: Incorporates a titanium alloy heat break that serves as an ultra-low thermal conductor, suppressing heat creep into the cold end and preventing clogs during continuous high-temperature runs.
Ultra-High Temperature Threshold (Up to 350°C): Engineered for the S1 Max high-temp ecosystem, supporting demanding engineering plastics such as PA, PA-CF, PC, ABS, ASA, and PET-CF.
Micro-Precision Output (0.25mm Aperture): Delivers thin layer lines and narrow extrusion widths for printing detailed miniatures, fine wall geometries, tight mechanical tolerances, and crisp small text.
Insulating Silicone Sock: Includes a tailor-fitted silicone insulator that stabilizes nozzle temperature, shields against chamber airflow fluctuations, and keeps molten filament from sticking to the block.

Technical Specifications

Printer Compatibility: Anycubic Kobra S1 Max / S1 Max Combo
Nozzle Aperture: 0.25 mm
Nozzle Material: Hardened Steel
Throat Tube Material: Titanium Alloy
Max Hotend Temperature: Up to 350°C
Supported Filaments: PLA, PETG, ABS, ASA, PA, PC, PLA-CF, PETG-CF, PA-CF, PC-CF/GF, PET-CF, TPU
Mounting System: Tool-Free Clip Quick-Release Latch. Important Note on TPU: Flexible filaments like TPU 95A are supported by the hotend, but high backpressure through a 0.25mm nozzle requires slower extrusion speeds. Note that flexible materials should be fed directly rather than through automatic multi-material systems like the ACE 2 Pro.

Maintenance & Care Tips

Quick Swap Installation Steps

Unload & Cool Down: Retract filament completely and ensure the hotend is cooled down to room temperature before turning off the power.
Remove Cover & Sock: Take off the printhead front cover and peel off the insulating silicone sock.
Release Clamp: Pry open the quick-release clips that secure the nozzle assembly to the heatsink base and pull out the old nozzle module.
Insert & Secure: Insert the 0.25mm module into the heatsink base, ensuring there is no gap between the hotend and the heat dissipation plate, then lock the retention clips firmly down. Put the silicone sock and front cover back in place.

Slicer Calibration & Flow Tuning

Lower Volumetric Flow Limit: A 0.25mm hole significantly restricts volumetric extrusion capacity compared to a standard 0.4mm nozzle. In Anycubic Slicer / OrcaSlicer, drop maximum volumetric speed to prevent extruder gear grinding or motor skipping.
Layer Height Boundaries: Recommended layer heights for a 0.25mm nozzle range between 0.05 mm and 0.16 mm (never exceed 80% of nozzle diameter).
Thermal Compensation: Hardened steel conducts heat slightly slower than brass. If extruding rapidly, you may need to increase print temperature by 5°C to 10°C relative to standard brass settings.

Clog Prevention & Cleaning

Thorough Filament Purging: When switching from high-temp engineering filaments (e.g., PA-CF or PC at ~300°C) down to standard filaments like PLA (~200°C), flush out residual filament at the higher material's temperature first to avoid trapping unmelted high-temp resin in the 0.25mm nozzle bore.
Cleaning Needles: Only use cleaning wire/needles sized 0.20 mm or smaller. Never force a 0.3mm or 0.4mm needle into a 0.25mm hole.
Cold Pull (Atomic Cleaning): Perform a cold pull using Nylon or dedicated cleaning filament if experiencing flow inconsistency. Heat to ~240°C, let cool to ~90°C, then pull firmly out to grab residual debris from inside the nozzle chamber.

Weight