LDO Galileo 2 Extruder Kit - 9:1 Planetary Gearbox, Voron Stealthburner CW2 Drop-In Replacement

A modular drive system built for better efficiency and precision

The LDO Galileo 2 (G2) is a next-generation drive system designed by key designers from the Voron community. It brings one unified gear platform to two major applications: extrusion and Z-axis motion.

Galileo 2 Extruder KIT (G2E)

Designed for print head extrusion upgrades, with direct compatibility for Stealthburner-style mounting.

Galileo 2 Z Drive KIT (G2Z)

Designed for Z-axis drive optimization, especially when a compact layout matters.

Galileo 2 Z XL KIT (G2Z-XL)

An enhanced version of the G2Z platform, better suited for multi-motor or expanded Z-drive setups.

Key Technical Highlights

1) 9:1 High-Ratio Planetary Gear System

Compared to traditional 5:1 designs, the 9:1 ratio delivers finer control, more consistent extrusion, and better Z‑axis resolution.

2) Custom 9T Drive Gear Design

The custom 9-tooth gear increases contact area by roughly 20%, reducing wear while improving power transfer efficiency.

3) 3-Planet Load-Sharing Structure

The planetary gears distribute load more evenly, helping reduce uneven wear and vibration during operation.

For Extrusion (G2E)

- Direct-fit replacement for Voron Stealthburner

- Compatible with most mainstream direct-drive conversion setups

For Z Drive (G2Z / G2Z-XL)

- Voron V2.4 series

- Micron 120 / 180

- Can also be adapted to other belt-driven Z-axis system, such as V0-style conversions

Recommended Use

- Small-format machines (≤250 mm): G2Z is strongly recommended

- Large-format machines (≥300 mm): Choose based on your specific build requirements

Installation features

- Modular design with a straightforward assembly process

- Full open-source files and guidance available

- Compatible with Voron ecosystem

Important setup notes

- Set gear_ratio = 9:1

- rotation_distance must be re-tuned

- On larger printers, the Z-axis may drop slightly when power is turned off

What’s included

- Custom 9T stepper motor

- Planetary gear components

- CNC / molded parts

- Full set of fasteners

- Assembly accessories

Note:  printed parts are not included.

The Galileo 2 was led by Voron core developer JaredC01 and underwent long‑term community testing throughout roughly one year of development. LDO is also an officially authorized kit supplier for the platform.

FAQ

Q1: Can I use G2E and G2Z interchangeably?
A1:No. The G2E is an extruder, while G2Z is a Z-axis drive module. They serve completely different functions.

Q2: Why choose the 9:1 ratio over  a traditional design?
A2: A higher gear ratio  typically gives you finer control, more consistent output, and smoother print performance.

Q3: What ‘s the difference between G2Z and G2Z-XL?
A3: G2Z is the standard compact version, while G2Z-XL is the expanded version designed for larger or more complex Z-drive setups.

Q4: Is this series suitable for beginners?
A4: Users with some DIY experience will find it easier to set up, but the LDO kit significantly lowers the overall assembly difficulty.

Q5: Do I have to use it with a Voron printer?
A5: No, it's an open design. However, compatibility is best within the Voron ecosystem.