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

What is the name of an industrial gear unit that can be adapted precisely to the operating and ambient conditions of a particular application? CORRECT! Generation X.e! Individual and selective improvements to the hardware of our X series and a redesigned, networked calculation landscape are making this possible.

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


Red gear unit depicted in graphics as a concept study in concrete architecture

Durability, finely graduated sizes, and an invertible housing are the characteristics of our tried and tested X-series industrial gear units.

The new Generation X.e is based on these features and impresses with its added efficiency, experience, and excellence: Because these industrial gear units can be adapted individually and precisely to the respective requirements of your particular application, both in terms of operation and the surroundings.

The result is:

  • Highest possible efficiency
  • Greater safety
  • Longer service life, even in harsh conditions.

Technical data

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


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

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

What does a networked calculation landscape mean to you?

The new networked calculation landscape supports you perfectly with the selective configuration of your gear unit. Our industry experts assist you and can now take the highly specific operating conditions of your application into account.

Because the new Generation X.e has been enhanced precisely on the basis of the industry and application experience of both our experts and our customers from the fields of mining, cement, and port logistics. You too can take the consistent path toward ideal and highly efficient operating processes with our intelligent drive solution.

An initial oil change after 500 operating hours?

You can safe these costs and resources when one of our X.. series industrial gear unit is delivered. We have established a closely monitored run-in and cleaning process in our production to do that for you. This way, using our own SEW GearOil lubricants and unique additives, 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.

We'll be glad to assist you.

Do you have questions about our Generation X.e? Just fill in the form below and send us a message!


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