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Designed for maximum performance

Gear units

Gear Units

    Today's world is often loud and hectic. For this reason, noise reduction and comfort are some of the primary objectives in the rail sector. And this despite the ever more challenging requirements that rail vehicles must satisfy. Our gear units are designed to fulfill these requirements and to meet customer needs.

    Gear units for any application

      Gear units from Voith are operating all over the world. They are optimally adapted to individual customer requirements and all rail applications.


       

      Gear units for light rail vehicles and trams

      Longitudinal drive

      Bevel gear unit KSH-type with two stages, fully suspended

      • Motor located alongside the bogie
      • Motor shaft and wheelset shaft orthogonally to each other
      • Motor rigidly linked with the gear unit
      • Motor output shaft and Gear unit input shaft connected by a membrane coupling
      • Gear unit fully suspended
      • Total gear ratio effected by two gear stages (one helical and one bevel gear stage)
      • Power transmission from the hollow output shaft of the gear unit to the wheelset shaft by a flexible 2-level rubber wedge coupling
      • Compensation of relative movement between Motor-Gear-unit and wheelset shaft by the flexible 2-level rubber wedge coupling
      • Suspension elements between Motor-Gear-Unit and bogie frame

      Transversal drive

      Helical gear unit SZH-type with two stages, fully suspended

      • Motor located in the bogie
      • Motor shaft and wheelset shaft parallel to each other
      • Motor rigidly linked with the gear unit
      • Motor output shaft and Gear unit input shaft connected by a membrane coupling
      • Gear unit fully suspended
      • Total gear ratio effected by two helical gear stages
      • Power transmission from the hollow output shaft of the gear unit to the wheelset shaft by a flexible 2-level rubber wedge coupling
      • Compensation of relative movement between Motor-Gear-unit and wheelset shaft by the flexible 2-level rubber wedge coupling
      • Suspension elements between Motor-Gear-Unit and bogie frame

      Gear units for metros

      Transversal drive

      Helical gear unit SE-type with one stage, axle mounted

      • Motor located in the bogie
      • Motor shaft and wheelset shaft parallel to each other
      • Gear unit axle riding
      • Total gear ratio effected by one helical gear stage
      • Compensation of relative movement between motor and Gear unit by a gear coupling
      • Torque reaction rod between Gear unit and bogie frame

      Transversal drive

      Helical gear unit SZ-type with two stage, axle mounted

      • Motor located in the bogie
      • Motor shaft and wheelset shaft parallel to each other
      • Gear unit axle riding
      • Total gear ratio effected by two helical gear stages
      • Compensation of relative movement between motor and Gear unit by a gear coupling
      • Torque reaction rod between Gear unit and bogie frame

      Gear units for high-speed trains

      Transversal drive

      Helical gear unit SE-type with one stage, axle mounted

      • Motor located in the bogie
      • Motor shaft and wheelset shaft parallel to each other
      • Gear unit axle riding
      • Total gear ratio effected by one helical gear stage
      • Compensation of relative movement between motor and Gear unit by a gear coupling
      • Torque reaction rod or C-bracket between Gear unit and bogie frame

      Transversal drive

      Helical gear unit SZ-type with two stage, axle mounted

      • Motor located in the bogie
      • Motor shaft and wheelset shaft parallel to each other
      • Gear unit axle riding
      • Total gear ratio effected by two helical gear stages
      • Compensation of relative movement between motor and Gear unit by a gear coupling
      • Torque reaction rod or C-bracket between Gear unit and bogie frame

      Longitudinal drive

      Bevel gear unit KE-type with one stage, axle mounted

      • Electric traction motor located outside the bogie underneath the car body
      • Motor drive shaft and wheelset shaft orthogonally to each other
      • Power transmission to the gear unit input shaft by cardan shaft
      • Gear unit axle riding
      • Total gear ratio effected by one bevel gear stage
      • Compensation of relative movement between the gear unit and traction motor by cardan shaft
      • Torque reaction rod between gear unit and bogie frame

      Gear units for diesel multiple units

      Longitudinal drive

      Bevel gear unit SK-type with two stages, axle mounted

      • Mechanical or hydrodynamic transmission located outside the bogie underneath the car body
      • Engine drive shaft and wheelset shaft orthogonally to each other
      • Power transmission to the gear unit input shaft by cardan shaft
      • Gear unit axle riding
      • Total gear ratio effected by two gear stages (one helical and one bevel gear stage)
      • Compensation of relative movement between the gear unit and transmission by cardan shaft
      • Torque reaction rod between gear unit and bogie frame

      Longitudinal drive

      Bevel gear unit KE-type with one stage, axle mounted

      • Mechanical or hydrodynamic transmission located outside the bogie underneath the car body
      • Engine drive shaft and wheelset shaft orthogonally to each other
      • Power transmission to the gear unit input shaft by cardan shaft
      • Gear unit axle riding
      • Total gear ratio effected by one bevel gear stage
      • Compensation of relative movement between the gear unit and transmission by cardan shaft
      • Torque reaction rod between gear unit and bogie frame

      Gear units for electric multiple units

      Transversal drive

      Helical gear unit SE-type with one stage, axle mounted

      • Motor located in the bogie
      • Motor shaft and wheelset shaft parallel to each other
      • Gear unit axle riding
      • Total gear ratio effected by one helical gear stage
      • Compensation of relative movement between motor and Gear unit by a gear coupling
      • Torque reaction rod between Gear unit and bogie frame

      Transversal drive

      Helical gear unit SZ-type with two stage, axle mounted

      • Motor located in the bogie
      • Motor shaft and wheelset shaft parallel to each other
      • Gear unit axle riding
      • Total gear ratio effected by two helical gear stages
      • Compensation of relative movement between motor and gear unit by a gear coupling
      • Torque reaction rod between gear unit and bogie frame

      Transversal drive

      Helical gear unit SZH-type with two stages, fully suspended

      • Motor located in the bogie
      • Motor shaft and wheelset shaft parallel to each other
      • Motor rigidly linked with the gear unit
      • Motor output shaft and gear unit input shaft connected by a membrane coupling
      • Gear unit fully suspended
      • Total gear ratio effected by two helical gear stages
      • Power transmission from the hollow outputshaft of the gear unit to the wheelset shaft by a flexible 2-level rubber wedge coupling
      • Compensation of relative movement between motor-gear-unit and wheelset shaft by the flexible 2-level rubber wedge coupling
      • Suspension elements between motor-gear-unit and bogie frame

      Longitudinal drive

      Bevel gear unit KE-type with one stage, axle mounted

      • Electric traction motor located outside the bogie underneath the car body
      • Motor drive shaft and wheelset shaft orthogonally to each other
      • Power transmission to the gear unit input shaft by cardan shaft
      • Gear unit axle riding
      • Total gear ratio effected by one bevel gear stage
      • Compensation of relative movement between the gear unit and traction motor by cardan shaft
      • Torque reaction rod between gear unit and bogie frame

      Gear units for diesel-hydraulic locomotives

      Longitudinal drive

      Bevel gear unit SK-type with two stages, Axle mounted

      • Hydrodynamic transmission located outside the bogie in the loco frame
      • Engine drive shaft and wheelset shaft orthogonally to each other
      • Power transmission to the gear unit input shaft by cardan shaft
      • Gear unit axle riding
      • Total gear ratio effected by two gear stages (one helical and one bevel gear stage)
      • Compensation of relative movement between the gear unit and transmission by cardan shaft
      • Torque reaction rod between gear unit and bogie frame

      Longitudinal drive

      Bevel gear unit KE-type with one stage, axle mounted

      • Hydrodynamic transmission located outside the bogie in the loco frame
      • Engine drive shaft and wheelset shaft orthogonally to each other
      • Power transmission to the gear unit input shaft by cardan shaft
      • Gear unit axle riding
      • Total gear ratio effected by one bevel gear stage
      • Compensation of relative movement between the gear unit and transmission by cardan shaft
      • Torque reaction rod between gear unit and bogie frame

      Gear units for electric and diesel-electric locomotives

      Transversal drive

      Helical gear unit SET-type in cannon box design with one stage, axle mounted

      • Motor located in the bogie
      • Motor shaft and wheelset shaft parallel to each other
      • Motor rigidly linked with the gear unit
      • Motor-gear unit axle riding
      • Total gear ratio effected by one helical gear stage

      Transversal drive

      Helical gear unit SE-type with one stage, axle mounted

      • Motor located in the bogie
      • Motor shaft and wheelset shaft parallel to each other
      • Gear unit axle riding
      • Total gear ratio effected by one helical gear stage
      • Compensation of relative movement between motor and gear unit by a gear coupling
      • Torque reaction rod between gear unit and bogie frame

      Gear units for special purpose vehicles

      Longitudinal drive

      Bevel gear unit SK-type with two stages, axle mounted

      • Mechanical or hydrodynamic transmission located outside the bogie underneath the car body
      • Engine drive shaft and wheelset shaft orthogonally to each other
      • Power transmission to the gear unit input shaft by cardan shaft
      • Gear unit axle riding
      • Total gear ratio effected by two gear stages (one helical and one bevel gear stage)
      • Compensation of relative movement between the gear unit and transmission by cardan shaft
      • Torque reaction rod between gear unit and bogie frame

      Longitudinal drive

      Bevel gear unit KE-type with one stage, axle mounted

      • Mechanical or hydrodynamic transmission located outside the bogie underneath the car body
      • Engine drive shaft and wheelset shaft orthogonally to each other
      • Power transmission to the gear unit input shaft by cardan shaft
      • Gear unit axle riding
      • Total gear ratio effected by one bevel gear stage
      • Compensation of relative movement between the gear unit and transmission by cardan shaft
      • Torque reaction rod between gear unit and bogie frame

      Transversal drive

      Helical gear unit SE-type with one stage, axle mounted

      • Motor located in the bogie
      • Motor shaft and wheelset shaft parallel to each other
      • Gear unit axle riding
      • Total gear ratio effected by two helical gear stages
      • Compensation of relative movement between motor and gear unit by a gear coupling
      • Torque reaction rod between gear unit and bogie frame
       
      Function tests, driving simulations, endurance runs and precise measurement of noise emissions − our unique test bench provides the best conditions for the optimum further development of our gear units.
      Stefan Hülsmann, Research Engineer at Voith
      Read more about our test bench

      Bionic toothing

        Voith's innovative bionic toothing is inspired by nature. The optimized tooth root profile makes the toothing more durable and allows for narrower design or a reduction of noise emissions.

        Service

          Voith offers customized service for gear units. With customer needs in focus our service experts ensure minimized downtimes and highest availability.

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