Generation X.e – Helical Gear Units / Bevel-Helical Gear Units

With 23 finely graduated sizes, the helical and bevel-helical gear units of the X..e series cover the torque range from 6.8 to 475 kNm. The extensive modular program and the large number of predefined additional equipment and options offer a high degree of flexibility for adaptation to the application situation. Regardless of whether you are a plant manufacturer or operator - the X..e series offers the right solution for every requirement.

Generation X.e industrial gear units
Generation X.e industrial gear units

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Generation X.e industrial gear units

One standard product – numerous possibilities

Generation X.e industrial gear units
Generation X.e industrial gear units

For operators or original equipment manufacturers of machines and plants, it is crucial that the drives used there are robust, reliable and easy to maintain. The industrial gear units of the X..e series efficiently meet these requirements.

The intelligent, universal gear unit concept impresses with its fine size graduation, high installation variability and the large number of additional modular features and options such as motor adapters, backstop, various sealing and shaft systems, and many more. The wide ratio range of 6.3 - 450 and the robust design make the All-Rounder the right choice in many industries and applications. Whether crane, conveyor belt or mixer - with the X..e series and the industry know-how of SEW-EURODRIVE, you are opting for maximum availability and a reliable partner. And if our modular system does not have the right solution for you, we will customize our gear units for you.

This is what makes the Generation X.e unique:

Red gear unit depicted in graphics as a concept study against a dark-gray backgroundT
  • Contactless sealing systems
  • Thermally improved oil level
  • Optimized bearing preload
  • Optimized tooth flank topology
  • Improved bevel pinion housing
  • Universal fan guard

Contactless sealing systems


  • No wear at input and output shaft
  • No oil losses

Your benefits:

  • Higher operational safety
  • Significantly longer maintenance intervals for your drive system

Thermally improved oil level


  • We are aware of the fine line between reducing the oil limit and obtaining an optimal heat dissipation
  • Ideal reduction of the oil bath temperature

Your benefits:

  • Improvement of the operational reliability
  • Savings of up to 29% of oil volume
  • Extension of the oil service life by up to 110%, and so extended oil change intervals
  • Reduced churning losses by up to 87.5%
  • Reduced oil bath temperature by up to 8%
  • Increased thermal limit rating by up to 32%

Optimized bearing preload


  • Order-specific settings – always the right bearing preload
  • Reduced formation of heat spots
  • Low compression

Your benefit:

  • Increased bearing service life of your gear unit by up to 220%
  • Increased thermal limit rating by up to 24%
  • Reduced oil bath temperature by up to 4%

Optimized tooth flank topology


  • Tooth flank topology resistant to displacements
  • Meshing interference can be tolerated better
  • Avoidance of downtimes
  • Increase in system availability

Your benefits:

  • Optimized bearing preload
  • Higher operational reliability of the drive when external forces affect the shafts
  • New calculation landscape combined with optimized tooth flank topology
  • Increase of the static overhung loads at unfavorable application angle of up to 41%
  • Lower gear unit noise due to optimized tooth meshing

Improved bevel pinion housing


  • Optimized oil flow and so greater operational reliability
  • Higher thermal rating
  • Higher powers can be transmitted without unexpected machine downtimes

Your benefits:

  • Basis to obtain a reduction of up to 30% in system power loss
  • Increased operational reliability and improved cold start behavior
  • Increased overall limit rating by up to 153%

Universal fan guard


  • The arrangement of various fan sizes (boost, balanced, silent) and fan types under one guard
  • Fixed installation dimensions in your system
  • Ideal cooling in compliance with the given sound pressure limits

Your benefits:

  • Reduced oil bath temperature by up to 36%
  • Increased thermal limit rating as compared to the current axial fan by up to 54%
  • Lowered sound pressure level as compared to the current axial fan by up to 7 dB(A)

Generation X.e – efficient. experienced. excellent

Technical data

Close table
Gear unit design Stages Gear ratio i Nominal torque MN2
Helical gear unit
X.F.100e – X.F.320e
2 to 4 stages 6.3 – 450 6.8 – 175
Bevel-helical gear unit
X.K.100e – X.K.320e
2 to 4 stages 6.3 – 450 6.8 – 175
Bevel-helical gear unit
X.T.100e – X.T.250e
3 and 4 stages 12.5 – 450 6.8 – 175
We have stored a table for you here.

Application-specific industrial gear units

Conveyor belts, crane technology, mixers, crushers, and many more

  • In mining
  • In the cement industry
  • In port logistics

Want to avoid an initial oil change after 500 hours of operation? With our X.. series industrial gear units, you can save yourself the time and expense this involves.

We have established a closely monitored running-in and cleaning process during production. In conjunction with our SEW GearOil lubricants and their unique additives, this means we can provide you with a drive package tailored to your application that will not require an early oil change.

Find out more about SEW GearOil.


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