AMS Internal Hub Unit – Reinforced Replacement

This model is a replacement shell for the AMS Internal Hub Unit (Bambu Lab AMS).

The original part is known to break over time. Unfortunately, this component is not available as a standalone spare part — it is only sold as part of the full hub assembly:
https://eu.store.bambulab.com/it/products/ams-internal-hub-unit?id=47612007186780

When this piece fails, it typically causes continuous filament loading issues, often making the AMS partially or completely unusable.

This design provides a reinforced alternative, while maintaining full compatibility with the original hub assembly.
It installs without any modification and preserves the original geometry, with added strength in the most critical areas.

⚙️ Compatibility

• ✅ Bambu Lab AMS
• ❌ Not compatible with AMS Lite / AMS Pro

🖨️ Print Settings

Two 3MF profiles are included:

• Profile optimized for 0.2 mm nozzle
• Profile optimized for 0.4 mm nozzle

👉 Recommended: use the 0.2 mm nozzle profile for best accuracy and detail.

Details:

• Supports: required (already included in the profiles)
• Print time:
  • ~28 min (0.4 mm nozzle)
  • ~38 min (0.2 mm nozzle)
• Weight: ~1.2 g

🧵 Recommended Materials

• ✅ PLA
• ✅ PETG

Not recommended:

• ❌ Filled materials (not necessary)
• ❌ High-temperature materials (ASA, ABS, etc.)

💡 Notes

• Reinforced design targeting common failure points of the original part
• No modification required for installation
• Tolerances tested for proper fit with the original hub

📖 Disassembly / access guide (official Bambu Lab):
https://wiki.bambulab.com/en/x1/maintenance/replace-first-stage-feeder
(This guide shows how to access the internal components of the AMS, including the hub area)

⚠️ Disclaimer

This is a non-official replacement part. Use at your own risk.