Bambu Lab Part Cooling Fan for A2L

The Bambu Lab Part Cooling Fan for A2L is an original replacement fan designed specifically for cooling freshly extruded filament during printing on the Bambu Lab A2L.

The fan directs airflow toward newly deposited layers, helping the material cool and solidify quickly before subsequent layers are added. Effective part cooling is important for maintaining accurate model geometry and improving the quality of overhangs, bridges, small details, and sharp features.

The FAF026 fan is suitable for replacing a damaged, noisy, or non-functioning original A2L part cooling fan and restores the intended model-cooling performance of the toolhead.

Key Features

• Original Bambu Lab replacement part cooling fan

• Part number FAF026

• Designed specifically for Bambu Lab A2L

• Cools freshly extruded filament during printing

• Helps improve overhang and bridge quality

• Supports sharper details and cleaner model geometry

• Helps newly deposited layers solidify quickly

• Direct replacement for the original A2L part cooling fan

Rapid Cooling of Freshly Printed Layers

After filament leaves the nozzle, it remains soft for a short period before solidifying.

The part cooling fan directs controlled airflow toward the printed model, helping each newly deposited layer cool more quickly.

Effective cooling can improve:

• Overhang quality

• Bridge performance

• Sharp corners

• Fine details

• Small features

• Surface definition

• Dimensional stability

Improved Overhang Performance

Overhangs have limited support from the layers underneath them.

Rapid cooling helps the freshly deposited filament hold its intended position before gravity causes it to sag or deform.

A correctly operating part cooling fan therefore plays an important role when printing models with complex geometry.

Better Bridge Printing

During bridge printing, filament must span an unsupported gap between two supported areas.

Cooling the extruded material quickly helps the strand retain its shape while crossing the gap, reducing sagging and improving bridge consistency.

Bridge performance also depends on settings such as extrusion temperature, print speed, bridge flow, filament type, and bridge length.

Better Fine Details

Small features can remain hot because the nozzle returns to the same area very quickly.

The part cooling fan helps remove this excess heat so each layer has more time to solidify before additional material is deposited.

This is particularly useful when printing:

• Miniatures

• Fine lettering

• Thin walls

• Small towers

• Sharp tips

• Decorative details

• Detailed prototypes

Important for PLA Printing

PLA and many similar materials benefit significantly from strong part cooling.

Proper airflow helps the material solidify quickly after extrusion, supporting cleaner edges, better overhangs, and improved dimensional accuracy.

Cooling requirements vary between filament types. Some engineering materials require reduced cooling, so the correct filament profile should always be used.

Designed Specifically for A2L

The FAF026 fan is designed for the Bambu Lab A2L toolhead.

Its physical design, mounting arrangement, electrical connection, and airflow path are intended for the A2L.

Part cooling fans from the A1 Series, P Series, X Series, H2 Series, or other Bambu Lab printers should not be assumed to be interchangeable.

Part Cooling Fan vs Hotend Cooling Fan

The A2L uses separate cooling components for different purposes.

Part Cooling Fan – FAF026

• Cools the printed model

• Helps freshly extruded layers solidify

• Improves bridges and overhangs

• Supports detailed printing

Hotend Cooling Fan – FAF027

• Cools the upper hotend area

• Helps prevent heat creep

• Keeps filament from softening prematurely

• Supports reliable filament feeding

These two fans perform different functions and should not be confused when troubleshooting the printer.

Useful Replacement Part

Replacement may be appropriate if the original part cooling fan develops symptoms such as:

• Fan not spinning

• Reduced airflow

• Rattling or grinding noise

• Intermittent fan operation

• Damaged fan blades

• Damaged wiring or connector

• Fan damaged during a print failure

• Poor part cooling despite correct slicer settings

Installing the correct FAF026 replacement helps restore normal A2L model-cooling performance.

Technical Specifications

Applications

• Cooling freshly deposited layers

• Improving PLA print quality

• Overhang cooling

• Bridge printing

• Fine-detail printing

• Small-feature printing

• Toolhead maintenance

• Replacement of damaged part cooling fan

• A2L repair and servicing

• Print farm spare-part inventory

Compatibility

Compatible with:

• Bambu Lab A2L

This is the dedicated A2L version. Other Bambu Lab printer models may use different fan dimensions, connectors, mounting arrangements, or airflow designs.

Package Includes

• 1 × Bambu Lab Part Cooling Fan for A2L

• Mounting screws

Installation Note

Switch off the printer and disconnect it from power before replacing the fan.

During installation:

• Remove the required toolhead covers

• Disconnect the original fan connector carefully

• Avoid pulling directly on the wires

• Install the replacement fan in the correct orientation

• Secure the fan using the appropriate mounting screws

• Route the cable correctly

• Ensure the fan blades rotate freely

• Confirm normal fan operation after reassembly

Troubleshooting Note

Poor overhangs or weak layer cooling do not always indicate a failed part cooling fan.

Similar symptoms can also result from:

• Incorrect slicer fan settings

• Excessive nozzle temperature

• Printing too quickly

• Incorrect bridge settings

• Unsuitable filament profile

• Blocked airflow path

• Toolhead wiring problems

Check both fan operation and printing parameters before replacing components.

Usage Note

This product includes the A2L part cooling fan and its mounting hardware only. The hotend cooling fan, hotend, extruder, toolhead board, and other toolhead components are not included unless separately specified.