The Bambu Lab Auxiliary Extruder Gear Assembly is an original replacement gear set for the auxiliary extruder of the Bambu Lab X2D printer. The assembly ensures reliable filament feeding and retraction from the auxiliary extruder into the hotend and is essential for the accurate and trouble-free operation of the dual-nozzle printing system.

Original part for Bambu Lab X2D

This is an original service part directly from the manufacturer Bambu Lab, designed exclusively for the X2D model with a dual extruder. Precise dimensions, materials and tolerances guarantee trouble-free compatibility without the need for modifications or fine-tuning.

Precise filament feeding

The active gear is driven by the extruder motor and, together with the passive gear, pushes the filament into the hotend or pulls it back from the auxiliary extruder during retraction. The tooth geometry is optimized for reliable grip of common materials such as PLA, PETG or ABS.

Metal construction with long service life

The gears are made of metal that withstands long-term stress as well as abrasive filaments. That is why the gear assembly is a typical wear part, which we recommend inspecting and replacing after intensive use, especially when printing filled materials such as carbon or nylon.

Complete set including bearing and spring

The package contains everything needed for a complete replacement: active and passive gear, spring with plate for adjusting the pressure, 693ZZ ball bearing and M3x8 mounting screw. There is no need to purchase any additional components.

Designed for the X2D auxiliary extruder

The assembly is designed for mounting inside the auxiliary extruder, i.e. the second extruder of the X2D dual printing system. It enables trouble-free work with the second filament, whether it is soluble support or a second color.

Easy installation according to the official Wiki

The replacement is simple and can be handled by any experienced user. You will find the exact step-by-step procedure in the official Bambu Lab Wiki, which describes disassembling the extruder, replacing the gears and adjusting the spring pressure.

Material compatibility

The assembly handles standard materials as well as technical filaments such as ASA, polycarbonate or flexible materials without any problems. To maintain consistent print quality, we recommend checking the condition of the gears together with the nozzle - suitable nozzles can be found in our offer.

Package contents

1x Active gear, 1x Passive gear, 1x Spring, 1x Spring plate, 1x 693ZZ bearing, 1x M3x8 screw.