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.

One standard product – numerous possibilities

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

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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.

The modular Generation X.e system – benefits for you

  • Global availability
  • Delivery times
  • Detailed calculation
  • Condition monitoring
  • GearOil by SEW-EURODRIVE
  • Drive package / system components

Global availability

  • With four production plants and 13 assembly plants across the globe, standardized industrial gear units can be supplied worldwide impressively fast
  • Additional service centers can also provide all kinds of service operations at short notice

Delivery times

  • Short delivery times, even in the case of customized adaptations
  • Replacement parts required during servicing can also be supplied quickly

Detailed calculation

  • Thanks to a networked calculation landscape, each and every drive is simulated in the software, with calculations based on specific drive data requirements.
  • Collaboration with research institutes means the latest calculation models can be used on series products.

Condition monitoring

  • The DriveRadar® IoT Suite monitors parameters such as vibration and temperature on the drive to pre-empt damage to bearings or gearing and temperature-related issues.
  • Preventive damage detection with notification option


  • Boosts gear unit performance
  • Reduces rolling and sliding friction
  • Improves efficiency and wear resistance
  • Eliminates the need for an initial oil change after 500 hours of operation

Drive package / system components

You benefit from a perfectly coordinated overall package offering the best value for money, with SEW-EURODRIVE solving your drive task from start to finish. To provide this service, we collaborate with renowned manufacturers to expand our product portfolio.

This is what makes Generation X.e unique:

Our decades of experience in the construction of large gear units have prompted us to selectively revise the X series. Find out below which innovations make the X.e generation so unique and how the intelligent combination of the implemented measures and the calculation by networked software tools enables you to obtain an exactly fitting gear unit.

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

Contactless sealing systems


  • No wear on the input or output shaft
  • No oil losses

Benefits for you:

  • Greater operational reliability
  • Significantly longer maintenance intervals for your drive system

Thermally improved oil level


  • Establishing the right balance between lowering the oil level and optimizing heat transfer
  • Ideal reduction of the oil bath temperature

Benefits for you:

  • Improved operational reliability
  • Oil volume savings
  • An extended oil service life means longer intervals between oil changes
  • Reduced churning losses
  • Increased thermal limit rating

Optimized bearing preload


  • Always the right bearing preload for a particular order
  • Reduced formation of heat spots
  • Low compression

Benefits for you:

  • Increased bearing service life for your industrial gear unit
  • Increased thermal limit rating

Optimized gearing topology


  • Gearing topology resistant to displacements
  • Better tolerance of meshing problems
  • Avoidance of downtimes
  • Increased system availability

Benefits for you:

  • Greater operational reliability of the industrial gear unit when external forces act on the shafts
  • New calculation landscape combined with optimized gearing topology
  • Increased static overhung loads at an unfavorable application angle
  • Lower gear unit noise thanks to optimized tooth meshing

Improved bevel pinion housing


  • Optimized oil flow for greater operational reliability
  • Increased thermal limit rating
  • Supports increased power transmission without unexpected machine downtimes

Benefits for you:

  • Greater operational reliability and improved cold start behavior
  • Increased overall limit rating

Universal fan guard


  • One guard can accommodate various fan sizes and types
  • Fixed installation dimensions in your system
  • Optimum cooling in compliance with the specified sound pressure limits

Benefits for you:

  • Reduced oil bath temperature
  • Significant increase in the thermal limit rating
  • Lower sound pressure level

Generation X.e – efficient. experienced. excellent


Properties and features of the X..e series industrial gear units

  • Independent industrial gear unit platform with 23 sizes
  • Helical gear units and bevel-helical gear units
  • Single-piece and split gear unit housing
  • Invertible gear unit housing
  • Universal mounting positions
  • Distinctive modular technology
  • Diverse predefined optional equipment and options
  • Customer-specific adaptations possible

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 – 475
Bevel-helical gear unit
X.K.100e – X.K.320e
2 to 4 stages 6.3 – 450 6.8 – 475
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



Our helical gear units / bevel-helical gear units are used whenever a high torque is required on a reliable basis from a standard product – in applications from materials handling and crane technology to mixers, crushers and much more besides.

  • In mining
  • In the cement industry
  • In port logistics
Gray oil barrel, two red oil canisters and two lubricant cartridges against a gray concrete background

Lubricants for gear units

Our lubricants – the best possible protection for your gear unit.

Industrial gear units to go

Industrial gear units to go

"Assemble to order" gear units, which require no design adaptations, leave the factory just five days after receipt of the order.

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