---
title: Coaxial gearboxes for precision and efficiency
url: "https://www.wittenstein-group.com/int-en/products/servo-gearboxes/coaxial-gearboxes"
description: "Coaxial gearboxes from WITTENSTEIN: Low-backlash gearboxes ✓ High torque density ✓ alpha gearboxes ✓ Flexible coaxial drives ► Get advice now!"
date: 2025-06-03
modified: 2026-02-02
lastUpdated: 2026-04-13
---
# Coaxial gearboxes for precision and efficiency
Coaxial gearboxes
=================
Planetary gearboxes and Galaxie® – solutions for precise and powerful power transmission and efficiency.
Field Of Application - [Convection cooling](https://www.wittenstein-group.com/int-en/products/servo-gearboxes/coaxial-gearboxes?tx_solr%5Bfilter%5D%5B0%5D=appField%3AConvection+cooling)
- [Corrosion-resistant](https://www.wittenstein-group.com/int-en/products/servo-gearboxes/coaxial-gearboxes?tx_solr%5Bfilter%5D%5B0%5D=appField%3ACorrosion-resistant)
- [Food-grade lubrication](https://www.wittenstein-group.com/int-en/products/servo-gearboxes/coaxial-gearboxes?tx_solr%5Bfilter%5D%5B0%5D=appField%3AFood-grade+lubrication)
- [Hygienic Design](https://www.wittenstein-group.com/int-en/products/servo-gearboxes/coaxial-gearboxes?tx_solr%5Bfilter%5D%5B0%5D=appField%3AHygienic+Design)
- [Liquid cooling](https://www.wittenstein-group.com/int-en/products/servo-gearboxes/coaxial-gearboxes?tx_solr%5Bfilter%5D%5B0%5D=appField%3ALiquid+cooling)
Field Of Application
Output Shape - [Blind hollow shaft](https://www.wittenstein-group.com/int-en/products/servo-gearboxes/coaxial-gearboxes?tx_solr%5Bfilter%5D%5B0%5D=outputShape%3ABlind+hollow+shaft)
- [Flange](https://www.wittenstein-group.com/int-en/products/servo-gearboxes/coaxial-gearboxes?tx_solr%5Bfilter%5D%5B0%5D=outputShape%3AFlange)
- [Hollow shaft](https://www.wittenstein-group.com/int-en/products/servo-gearboxes/coaxial-gearboxes?tx_solr%5Bfilter%5D%5B0%5D=outputShape%3AHollow+shaft)
- [Shaft with key](https://www.wittenstein-group.com/int-en/products/servo-gearboxes/coaxial-gearboxes?tx_solr%5Bfilter%5D%5B0%5D=outputShape%3AShaft+with+key)
- [Smooth shaft](https://www.wittenstein-group.com/int-en/products/servo-gearboxes/coaxial-gearboxes?tx_solr%5Bfilter%5D%5B0%5D=outputShape%3ASmooth+shaft)
- [Splined shaft (DIN 5480)](https://www.wittenstein-group.com/int-en/products/servo-gearboxes/coaxial-gearboxes?tx_solr%5Bfilter%5D%5B0%5D=outputShape%3ASplined+shaft+%28DIN+5480%29)
- [System output](https://www.wittenstein-group.com/int-en/products/servo-gearboxes/coaxial-gearboxes?tx_solr%5Bfilter%5D%5B0%5D=outputShape%3ASystem+output)
Output Shape
Short delivery time available for selected product configurations.
[ Find out more ](https://www.wittenstein-group.com/int-en/services/consulting-planning/fast-lane)
FAST LANE [ ](https://www.wittenstein-group.com/int-en/products/servo-gearboxes/coaxial-gearboxes?tx_solr%5Bfilter%5D%5B0%5D=fastLane%3A1)
Price Level - [$](https://www.wittenstein-group.com/int-en/products/servo-gearboxes/coaxial-gearboxes?tx_solr%5Bfilter%5D%5B0%5D=priceLevel%3A%24)
- [$$](https://www.wittenstein-group.com/int-en/products/servo-gearboxes/coaxial-gearboxes?tx_solr%5Bfilter%5D%5B0%5D=priceLevel%3A%24%24)
- [$$$](https://www.wittenstein-group.com/int-en/products/servo-gearboxes/coaxial-gearboxes?tx_solr%5Bfilter%5D%5B0%5D=priceLevel%3A%24%24%24)
Price Level
Max. Torque (Nm)
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Max. Torque (Nm)
Backlash (arcmin)
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Backlash (arcmin)
Ratio
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Ratio
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[ TP+](https://www.wittenstein-group.com/int-en/product/tp)alpha Advanced Line
Ratio4 – 302.5Max. torque43 – 22000 NmBacklash≤ 1 – 3 arcmin Compact planetary gearbox with high torsional rigidity and output flange
[ SP+](https://www.wittenstein-group.com/int-en/product/sp)alpha Advanced Line
Ratio3 – 100Max. torque48 – 5700 NmBacklash≤ 1 – 4 arcmin Planetary gearbox with output shaft for high positioning accuracy and dynamics
[ NP ](https://www.wittenstein-group.com/int-en/product/np)alpha Value Line
Ratio3 – 100Max. torque18 – 800 NmBacklash≤ 8 arcmin Planetary gearbox with output shaft and high ratio variance
[ CP ](https://www.wittenstein-group.com/int-en/product/cp)alpha Basic Line
Ratio3 – 100Max. torque17 – 800 NmBacklash≤ 12 arcmin Highly economical planetary gearbox with output shaft and high flexibility
[ RP+](https://www.wittenstein-group.com/int-en/product/rp)alpha Premium Line
Ratio4 – 220Max. torque352 – 10450 NmBacklash≤ 1 – 3 arcmin Planetary gearbox with output flange and high axial and radial forces
[ XP+](https://www.wittenstein-group.com/int-en/product/xp)alpha Premium Line
Ratio3 – 100Max. torque50 – 3840 NmBacklash≤ 1 – 4 arcmin Specially designed planetary gearbox with output shaft with maximum power density
[ NTP ](https://www.wittenstein-group.com/int-en/product/ntp)alpha Value Line
Ratio4 – 100Max. torque56 – 800 NmBacklash≤ 5 arcmin Best economical solution for planetary gearboxes with TP+ output geometry
[ NPR ](https://www.wittenstein-group.com/int-en/product/npr)alpha Value Line
Ratio3 – 100Max. torque51 – 800 NmBacklash≤ 8 arcmin Planetary gearbox with slotted holes for optimum rack and pinion connection
[ NPS ](https://www.wittenstein-group.com/int-en/product/nps)alpha Value Line
Ratio3 – 100Max. torque51 – 800 NmBacklash≤ 8 arcmin Economical planetary gearbox with SP+ output geometry
[ NPL ](https://www.wittenstein-group.com/int-en/product/npl)alpha Value Line
Ratio3 – 100Max. torque51 – 800 NmBacklash≤ 8 arcmin Planetary gearbox with reinforced bearing and B14 output geometry
[ NPT ](https://www.wittenstein-group.com/int-en/product/npt)alpha Value Line
Ratio3 – 100Max. torque18 – 700 NmBacklash≤ 8 arcmin Economical planetary gearbox with output flange
[ CPS ](https://www.wittenstein-group.com/int-en/product/cps)alpha Basic Line
Ratio3 – 100Max. torque48 – 272 NmBacklash≤ 12 arcmin Highly economical planetary gearbox with variable application connection
### cymex® select
### cymex® 5
Finding the right gearbox is easier than ever:
Based on a few application parameters, our innovative quick design tool cymex® select makes a recommendation for a gearbox without calculation.
[Learn More](https://www.wittenstein-group.com/int-en/product/cymex-select "Learn More")
Discover our comprehensive sizing software:
cymex® 5 enables the fast, precise, and safe sizing of complete drive systems – proven in use worldwide.
[Learn More](https://www.wittenstein-group.com/int-en/product/cymex-5 "Learn More")
##### Precision
Low backlash and high torsional stiffness for maximum positioning and repeat accuracy.
##### Torque density
Compact design enables high torque density for powerful and space-saving solutions.
##### Efficiency
Efficient gearboxes and application consulting enable the realization of resource-saving machines.
> WITTENSTEIN offers a wide range of solutions: from highly efficient planetary gearbox technology to miniaturized, backlash-free Galaxie® gears with hollow shafts.
WITTENSTEIN coaxial gearboxes offer maximum precision, flexibility, and durability—ideal for demanding applications in modern machines.
### Smooth running
Our coaxial gearboxes are characterized by high synchronization and low operating noise. This reduces vibrations in the machine.
### Flexibility
A wide variety of standard products combined with the option of customization ensures that you will find the ideal solution for your application.
### High dynamics
Our low backlash gearboxes are characterized by low weight and low inertia. This makes them suitable for highly dynamic axes.
### Durability
Proven products and manufacturing processes ensure maximum reliability over the life cycle of your machines.
WITTENSTEIN's coaxial gearboxes are low-backlash gear solutions that offer maximum precision, smooth running, and efficiency. As compact coaxial drives, they are ideal for applications with limited installation space and high power requirements. Our alpha gearboxes are low-backlash planetary gearboxes with high torque density and flexibility.
Whether for robot axes, machine tools, or special solutions, WITTENSTEIN can supply you with the right low-backlash gearbox. With a wide range of designs, gear ratios, and features, we can create customized coaxial drive solutions to meet your requirements.