Product Description

Bambu Lab Toolhead Filament Hub for A2L is an original filament hub located directly in the toolhead of the Bambu Lab A2L printer. It serves as a junction point between multiple input PTFE tubes from AMS/AMS Lite/AMS 2 Pro/AMS HT and the filament entry into the extruder. Thanks to precise guidance and internal filament routing, it significantly increases material switching reliability and reduces the risk of jamming or damaging the PTFE guidance.

Just like the AMS lite Filament Hub solution for the A1 series, this hub is a key component for multi‑color and multi‑material printing, but in the case of the A2L, it is part of a more advanced toolhead with an active filament hub, optimized for fast and frequent material changes.

Main Advantages

• Reliable filament switching during multi-color and multi-material printing
• Smooth guidance for up to four PTFE tubes (depending on AMS system configuration)
• Minimization of friction and jamming of the filament due to precise guidance geometry
• Original Bambu Lab part – guaranteed compatibility with A2L and downstream modules
• Compact design in the toolhead – no need for additional mounting on the printer frame
• Suitable for common and technical materials (PLA, PETG, ASA, etc. – according to printer capabilities)

Technical Parameters

Note: The A2L is a new platform and exact values for some detailed parameters of the Toolhead Filament Hub (e.g., exact number of supported inputs according to specific AMS configuration) may vary by revision and kit supplied. The parameters below are based on the design of similar Bambu Lab hubs (AMS lite Filament Hub) and A-series documentation.

General Information

• Manufacturer: Bambu Lab
• Part Name: Toolhead Filament Hub for A2L
• Location: integrated in the toolhead of the Bambu Lab A2L printer
• Purpose: distribution and guidance of filament from PTFE tubes (from AMS/AMS Lite/AMS 2 Pro/AMS HT) into the extruder
• Compatibility:
  • Bambu Lab A2L (toolhead of this printer)

Material and Design

• Body materials: plastic + metal inserts/reinforcements
• Color: Gray / Black (depending on production series)
• Number of PTFE tube inputs: up to 4 (typically 4 when used with AMS Lite / AMS unit)
• Interface towards the extruder: 1 output channel to the toolhead extruder inlet

Dimensions and Weight

• Approximate hub assembly size: approx. 60 × 60 × 30 mm (analogous to AMS lite Filament Hub)
• Approximate assembly weight: ~0.03 kg (30 g) including small metal parts

Use and Installation

• The hub is part of the A2L toolhead and is factory installed.
• In case of replacement or service, proceed similarly to replacing the hub in the A-series – it requires dismantling the toolhead cover and disconnecting the PTFE tubes.
• When reassembling, it is important to:
  • insert the PTFE tubes all the way to the stop, without damaging the ends,
  • check their straight path without sharp bends,
  • verify that all safety clips and mountings are firmly clicked in.

Suitable for Customers

• Users of Bambu Lab A2L, who:
  • need a spare part after mechanical damage or hub wear,
  • want to restore maximum multicolor printing reliability after filament feeding problems,
  • service technicians and advanced users performing toolhead maintenance or upgrades.

Key Benefits for the E-shop Customer

• Original Bambu Lab component – no need for modifications or printing your own brackets
• Improves feeding stability and accuracy especially with longer PTFE paths from the AMS
• Reduces the number of errors like “filament stuck in toolhead”, delays during switching, and failed color changes
• Ideal as a preventative spare part for intensively used A2L printers

Key Features:

• Original Bambu Lab Toolhead Filament Hub designed specifically for the Bambu Lab A2L printer
• Key component for reliable filament switching during multi-color and multi-material printing
• Up to four inputs for PTFE tubes from AMS / AMS Lite / AMS 2 Pro / AMS HT (depending on system configuration)
• Precise and smooth filament guidance into the extruder minimizes friction and risk of jamming
• Integrated design in the A2L toolhead – compact, without need for external brackets
• Fully compatible with the Bambu Lab ecosystem and automatic material feeding systems
• Suitable as a spare part for repairs or preventive maintenance of frequently used A2L printers