Voron Extruder Comparison — CW1 vs CW2 vs Galileo 2 vs Orbiter vs Sherpa

Extruder 对比 工具头

为你的 Voron 选择合适的挤出机几乎与选择热端同样重要。挤出机直接控制施加在耗材上的力、回抽速度以及通过热端送料的可靠性。在 Voron 生态系统中广泛使用的五大挤出机系列 — Clockwork 1、Clockwork 2、Galileo 2、Orbiter v2.0 和 Sherpa Mini — 很容易让人感到不知所措。

最后更新：2025年5月 In this guide, we break down every Voron-compatible extruder in terms of gear ratio, weight, torque, reliability, Klipper configuration, filament compatibility, and price. All prices reflect China-direct sourcing via our mini-program where applicable.

概览 — 挤出机规格表

Clockwork 1 — 原始 Afterburner 挤出机

Clockwork 1 (CW1) 是原始 Voron V2.4 和 Trident 构建中 Afterburner 工具头的默认挤出机。它采用 7:1 齿轮减速，由标准 NEMA14 扁平步进电机驱动。设计为直接驱动 BMG 几何结构 — 双驱动齿轮（一个主动轮，一个从动轮）从两侧夹持耗材。

优点： Proven design with thousands of builds. Simple to assemble with printed parts. Good grip on PLA, ABS, and PETG. The BMG gear geometry is well-understood and reliable. Replacement gears are cheap and widely available (~$5-10 per set).

缺点： Heavy compared to modern alternatives. The 7:1 ratio delivers adequate torque for standard printing but struggles with high-speed retractions above 50 mm/s or flexible filaments below 85A shore hardness. The integrated design means you can't swap extruders without swapping the entire toolhead. The printed idler arm can wear over time, introducing backlash.

Klipper rotational_distance： 22.678 (standard BMG gearset with 7:1).

最佳适用： Legacy Voron builds (V2.4r1, Trident with Afterburner) and budget builds where the toolhead is already printed. The CW1 is still perfectly capable for standard-speed printing (80-150 mm/s).

Clockwork 2 — Stealthburner 标准挤出机

Clockwork 2 (CW2) 是 Stealthburner 工具头的标配挤出机。它是 CW1 设计的进化版，包含几项关键改进：集成从动臂（带嵌入式轴承）、更坚固的机身，以及通过不同齿轮组实现的 10:1 可选齿轮比。

优点： The integrated idler is a significant improvement over the CW1 — it eliminates the printed idler arm wear issue and provides more consistent filament tension. Available in two gear ratios (7:1 standard, 10:1 high-torque). The 10:1 option provides noticeably better torque for flexibles and high-speed retraction. Compatible with all Stealthburner hotend options. Widely documented in Klipper configs and Voron documentation.

缺点： At ~160g, the CW2 is the heaviest extruder in this comparison. The additional mass on the toolhead reduces maximum acceleration for input shaper tuning — expect to lose 2,000-5,000 mm/s² in acceleration compared to a Galileo 2 or Sherpa Mini setup. The molded gears can wear over extended use, especially with abrasive filaments like carbon fiber PLA. Replacement gear sets cost $10-15.

Klipper rotational_distance： 7:1 ratio = 22.678; 10:1 ratio = 31.900 (or 3.1900 depending on stepper model — verify with your gearset).

最佳适用： Standard Voron V2.4r2 and Trident builds with Stealthburner. The CW2 is the default for a reason — it's reliable, well-supported, and works out of the box with no toolhead mods required.

Galileo 2 — 轻量扭矩怪兽

Galileo 2 是一款设计巧妙的挤出机，它采用 Sherpa Mini 齿轮传动系统（由 Annex Engineering 团队开发），并将其重新封装成更小、更轻的封装，专为 Stealthburner 设计。它使用 10:1 行星齿轮组，由微型 NEMA14 扁平电机驱动，在极其紧凑的尺寸内提供卓越的扭矩。

优点： At ~90g, it's the lightest full-performance extruder on this list — nearly half the weight of a CW2. The 10:1 gear ratio provides excellent torque for flexibles and high-retraction-acceleration scenarios. The planetary gearbox design is remarkably backlash-free. Steps perfectly into the Stealthburner toolhead as a drop-in replacement for the CW2. The low mass allows higher input shaper accelerations (12,000+ mm/s² on a well-tuned V2.4).

缺点： More expensive than the CW2 at $35-50. The planetary gearbox requires careful assembly and lubrication — if you buy a pre-assembled unit, verify it's properly greased. Idler tension adjustment is more critical than on the CW2 — too loose causes skipping, too tight causes gear wear and excess motor current draw. Some users report the idler arm can flex under high extrusion force when printing with a 0.8mm+ nozzle at high flow rates.

Klipper rotational_distance： 31.900 (10:1 ratio with standard BMG gears).

最佳适用： Speed-oriented builds where every gram on the toolhead matters. The Galileo 2 is the clear choice for high-acceleration Voron builds (300+ mm/s, 15k+ acceleration) and for users who print flexible materials regularly.

Orbiter v2.0 — 轻量远程挤出机

Moons Industries（原LDO）的Orbiter v2.0是一个独特的产品——它是一个独立挤出机，与工具头分开安装。这使其非常适合CANBus工具头设置，您可以在保持直接驱动性能的同时最小化工具头质量。

优点： At ~130g, it's lighter than the CW2 and can be mounted on the gantry or frame, further reducing moving mass on the X-axis. The 7:1 gear ratio uses metal spur gears that are extremely durable and backlash-resistant. The extruder body includes an integrated motor mount and a clear filament path that makes loading filament simple. Excellent for CANBus builds — the extruder can be mounted near the electronics, keeping the toolhead clean. The gearset is enclosed, so it's less prone to dust and debris than open-gear designs.

缺点： Because it mounts remotely from the toolhead, you lose the "direct drive" integration that makes toolhead-changed extruders simple. You'll need a filament guide tube between the extruder and toolhead. The 7:1 ratio limits torque for flexibles compared to 10:1+ designs. Some users report jamming with soft TPU (85A or below) due to the filament path geometry. At $35-55, it's one of the more expensive options. Requires toolhead-specific mount adapters.

Klipper rotational_distance: 7.710 (standard Orbiter v2.0 gearset).

最佳适用： CANBus builds, toolhead mass minimization, and users who prefer a modular setup where the extruder and toolhead can be independently upgraded.

Sherpa Mini — V0.2 传奇

Annex Engineering开发的Sherpa Mini是一款双驱动齿轮挤出机，齿轮比为11:1。它最初为Voron V0.2设计，至今仍是该平台最受欢迎的挤出机，尽管也有适用于Stealthburner的安装座。

优点： The 11:1 gear ratio is the highest on this list, delivering exceptional torque — it can drive filament through even the most restrictive hotends without skipping. Extremely reliable with proper assembly — the gear train is simple and robust. The dual-drive BMG-style gears provide excellent grip. At ~105g, it's reasonably light. Kits are very affordable at $18-28 China-direct. Widely available and well-documented.

缺点： Not a drop-in for the Stealthburner without a printed mount adapter (the MiniSB mount exists but adds height to the toolhead). The 11:1 ratio means lower maximum extrusion speed — you can't feed filament as fast as a 7:1 extruder with the same stepper motor RPM. For high-flow hotends (Rapido UHF, Goliath), the Sherpa Mini can become the bottleneck. The printed gears (in the original design) can wear over time, though metal gear replacements are available.

Klipper rotational_distance: 30.152 (11:1 ratio with standard BMG gears).

最佳适用： Voron V0.2 builds, builds with high-torque requirements (flexibles, large nozzles), and budget-conscious builders who want maximum reliability.

重量、流量与挤出压力对比

重量是这些挤出机之间最直接可测量的差异，因为它直接限制加速度。在配备Stealthburner的Voron V2.4上，各挤出机重量如下：

• Galileo 2： ~90g — allows 12k-18k mm/s² acceleration with input shaper
• Sherpa Mini（搭配 MiniSB）： ~105g — allows 11k-15k mm/s²
• Orbiter v2.0（独立安装）： ~130g on gantry, ~40g on toolhead — allows 14k-20k mm/s²
• Clockwork 1： ~155g — allows 8k-12k mm/s²
• Clockwork 2： ~160g — allows 7k-11k mm/s²

最大流量 depends primarily on your hotend, not the extruder. A Galileo 2 paired with a Dragon SF will bottleneck at ~20 mm³/s because of the hotend, not the extruder. However, with a high-flow hotend like the Rapido UHF (50 mm³/s), the extruder becomes the limiting factor. The CW2 and Galileo 2 can both feed a Rapido UHF at its maximum flow rate. The Sherpa Mini's 11:1 ratio means its maximum feed rate is about 30% lower than a 7:1 extruder at the same motor RPM.

齿轮材料 matters for longevity. The Orbiter v2.0 uses all-metal spur gears that last essentially forever. The Sherpa Mini and CW2 use molded (sintered or cast) gears that wear gradually — expect 1-3 years of regular use before replacement is needed. The Galileo 2 uses a planetary gearbox with metal gears that are more wear-resistant than molded gears.

柔性耗材性能

对于TPU和其他柔性材料，齿轮比是挤出机最重要的规格。更高的齿轮比在驱动齿轮处提供更多扭矩，这意味着挤出机可以推拉柔性耗材而不会使其弯曲或打滑。

• 11:1（Sherpa Mini）： Best for soft TPU (75A-85A). Minimal slipping even at high retraction speeds.
• 10:1（Galileo 2、CW2 可选）： Excellent for TPU. Handles 85A and above without issue.
• 7:1（CW1、CW2 标准版、Orbiter）： Adequate for harder TPU (90A+) and TPE. Soft TPU may slip or buckle on retractions above 30 mm/s.

直接驱动 vs Bowden： All extruders in this comparison run in a direct-drive configuration (extruder mounted close to the hotend). This is essential for flexible materials — Bowden setups cause buckling because the filament has too much unsupported length between the extruder gears and the hotend. The Orbiter v2.0 is a borderline case: mounted on the gantry with a short (~30-50mm) PTFE tube to the toolhead, it can still handle 90A+ TPU, but softer materials are problematic.

可靠性与常见问题

Clockwork 2 齿轮磨损： The molded gears in the CW2 are the most common failure point. With regular use (500+ hours), the drive gear teeth can develop grooves from filament friction. This gradually reduces extrusion consistency. Replace the gearset every 500-1000 hours for optimal performance. Symptoms: intermittent underextrusion, clicking sounds during retraction.

Galileo 2 惰轮张力： The Galileo 2 uses a spring-loaded idler arm that requires careful adjustment. Set the tension too loose and the filament will skip during high-flow printing. Set it too tight and the motor draws excess current (can cause overheating on long prints). The sweet spot is just tight enough that you can't push the filament through the gears by hand when the extruder is disengaged. Check tension every 50-100 hours.

Orbiter v2.0 卡料： The Orbiter's filament path uses a curved PTFE guide tube that can cause jamming with soft or worn filament. This is most common when transitioning from filament to filament or when using filament with high diameter variance. The fix is to ensure the PTFE guide is clean and properly seated, and to use high-quality filament with consistent diameter.

Sherpa Mini 齿轮打滑： With the 11:1 ratio, the Sherpa Mini generates very high torque. If the idler tension is too loose, the gears will skip. If too tight, the motor will stall. The Sherpa Mini is very sensitive to proper assembly — follow the Annex Engineering documentation carefully.

Klipper 配置 — 校准步骤

每个挤出机都需要准确的Klipper配置才能正确挤出。以下是适用于所有五种挤出机的逐步校准程序：

步骤1：设置rotational_distance

使用上述各节中列出的值作为起点。将以下内容添加到printer.cfg：

[extruder]
step_pin: ...
dir_pin: ...
enable_pin: ...
microsteps: 16  ; or 32 if your driver supports it
rotation_distance: 22.678  ; adjust per extruder
gear_ratio: 7:1  ; or whatever your extruder uses
full_steps_per_rotation: 200  ; standard NEMA14

步骤 2：使用“extrude”命令验证

在距挤出机入口100mm处标记耗材。通过Klipper控制台发送EXTRUDE=100。测量实际送料量。如果标记移动了97mm，则需要调整rotational_distance：new_value = current_value * (100 / actual_extruded)。

步骤3：设置压力提前

使用TUNING_TOWER命令进行压力提前。对于直接驱动设置，从0.020的值开始，并运行Klipper文档中的测试模式。根据热端和耗材类型，这些挤出机的良好调谐压力提前值通常为0.020-0.060。

步骤4：回抽校准

针对直接驱动结构，从0.3mm增量开始运行回抽测试塔，直至2.0mm。理想回抽距离应在减少拉丝的同时避免耗材磨损或发出咔嗒声。典型数值：CW1/CW2/Orbiter：0.5-1.5mm；Galileo 2：0.8-1.5mm；Sherpa Mini：0.6-1.2mm。回抽速度：30-50 mm/s。

价格对比

你应该选择哪款挤出机？

针对速度优化的V2.4或Trident构建（300+ mm/s，15k+ accel）： Choose the Galileo 2. The weight savings alone are worth the price premium. You'll get higher accelerations, less ringing, and better print quality at speed.

针对标准Voron构建（100-200 mm/s，5k-10k accel）： Choose the Clockwork 2. It's the stock extruder for Stealthburner for a reason. It's reliable, well-documented, and works perfectly for standard-speed printing.

针对V0.2构建： Choose the Sherpa Mini. It's the most popular extruder for the V0.2 for good reason — the 11:1 ratio provides excellent torque in a very small package.

针对CANBus构建或最大模块化： Choose the Orbiter v2.0. The ability to mount the extruder separately from the toolhead opens up build possibilities that the integrated extruders can't match.

针对Afterburner的预算构建： The Clockwork 1 is cheap, proven, and still works perfectly for standard-speed printing. Don't feel pressured to upgrade if your CW1 is working fine.