---
title: "Hollow shaft actuators: compact, precise, and backlash-free"
url: "https://www.wittenstein-group.com/en-us/products/servo-actuators/hollow-shaft-actuators"
description: "Hollow shaft actuators: zero backlash ✓ Galaxie actuators ✓ Hollow shaft motor with gearbox ✓ Compact and efficient ► Get advice now!"
date: 2026-02-12
modified: 2026-02-24
lastUpdated: 2026-04-13
---
# Hollow shaft actuators: compact, precise, and backlash-free
Hollow shaft actuators
======================
The central hollow shaft of the drive facilitates easy integration into your application, as it is ideal for conducting a wide variety of media.
Field Of Application - [Convection cooling](https://www.wittenstein-group.com/en-us/products/servo-actuators/hollow-shaft-actuators?tx_solr%5Bfilter%5D%5B0%5D=appField%3AConvection+cooling)
- [Integrated system solution](https://www.wittenstein-group.com/en-us/products/servo-actuators/hollow-shaft-actuators?tx_solr%5Bfilter%5D%5B0%5D=appField%3AIntegrated+system+solution)
- [Liquid cooling](https://www.wittenstein-group.com/en-us/products/servo-actuators/hollow-shaft-actuators?tx_solr%5Bfilter%5D%5B0%5D=appField%3ALiquid+cooling)
Field Of Application
Output Shape - [Hollow shaft](https://www.wittenstein-group.com/en-us/products/servo-actuators/hollow-shaft-actuators?tx_solr%5Bfilter%5D%5B0%5D=outputShape%3AHollow+shaft)
Output Shape
Max. Torque (Nm)
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Max. Torque (Nm)
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[ Galaxie® D ](https://www.wittenstein-group.com/en-us/product/galaxie-d)
Ratio24 – 31Max. torque450 – 4050 NmBacklash0 arcmin Galaxie® D – compact, powerful and backlash-free for maximum precision with minimum installation…
[ Miniaturized Galaxie® actuator ](https://www.wittenstein-group.com/en-us/product/miniaturized-galaxie-actuator)
Ratio60 – 61Max. torque150 – 250 NmBacklash0 arcmin Miniaturized Galaxie® actuator – maximum performance for compact robotics and automation
### cymex® 5
### SERVOsoft®
Discover our powerful sizing tools:
cymex® 5 enables the fast, precise, and reliable design of complete drive systems—proven in use worldwide.
[Learn More](https://stage.wittenstein-group.com/int-en/product/cymex-5 "Learn More")
Quickly and easily size complete multi-axis servo systems including all electrical and mechanical components with SERVOsoft®.
[Falscher Link](https://stage.wittenstein-group.com/int-en/product/cymexr-select "Falscher Link")
##### Flexibility
Cables, media, or shafts can be routed through the actuator. Additional components such as encoders can be integrated.
##### Compactness
No additional interfaces are required, enabling space-saving designs.
##### Efficiency
The usable hollow shaft enables cost reduction in the axle design.
> With WITTENSTEIN actuators and their exceptionally large hollow shafts, axis concepts can be completely reimagined—more precise, compact, and efficient than ever before.
Our Galaxie® actuators enable superior drive shafts thanks to their unique characteristics.
### More space
The hollow shaft provides space for cables, media, and additional shafts, creating valuable installation space.
### Maximum precision
Absolute zero backlash in the gear kinematics of Galaxie® actuators enables maximum precision.
### Fewer interfaces
The direct integration of the hollow shaft gearbox into the performance motor eliminates additional assembly work, saving time, space, and costs.
### Greater productivity
Achieve maximum torque density for higher machine performance and increased efficiency.
WITTENSTEIN hollow shaft actuators combine high precision with maximum integration. The exceptionally large hollow shaft allows cables, media or shafts to be fed through directly – ideal for modern machine designs where installation space, efficiency and flexibility are crucial.
Thanks to the unique zero-backlash kinematics of the integrated Galaxie® gearbox, positioning accuracy remains constant over the entire service life – without any readjustment. As a hollow shaft motor with gearbox, they reduce interfaces and save installation time. In addition, downsizing of peripherals such as cable and converters, as well as a reduction in the required cooling capacity, lower both TCI (Total Cost of Investment) and TCO (Total Cost of Ownership).
Your advantages at a glance:
- More space: Room for cables, media, and additional shafts.
- High precision: Lifetime zero backlash for maximum accuracy.
- Fewer interfaces: Compact integration saves time and costs.
- More productivity: Highest torque density for maximum performance.
Rethink drive solutions now – with WITTENSTEIN hollow shaft actuators
Contact us
------------
Would you like to learn more about our solutions?
We would be happy to advise you—personally, competently, and tailored to your requirements.
[info@wittenstein-us.com](#)
[ 1 630 540-5300 ](tel:16305405300)
[ To the contact form ](https://www.wittenstein-group.com/en-us/contact-locations/contact)