Transportation Systems

Driving gear units

Driving gear units transmit turning force produced by the traction motor to the wheels. A driving gear set consists of all the components (axles, couplings, gears, etc.) involved in transmitting power to the wheel.
Driving gear units can be mounted in various ways and locations relative to the rail vehicle and can use varied mechanisms to transmit power to the wheels, but they are typically housed in a confined space under the body of rail vehicles. Regardless of the method, driving gear units need to be compact and highly reliable.

Features

  • Lubrication filling versatility: The lineup offers a variety of filling methods to meet the varying usage environments of regular, high speed and cold weather, etc.
  • Low maintenance: Simplified adjustment of internal components as well as containment of lubrication leakage for reduced maintenance.

Major Products

Method Single stage deceleration method using a helical gear
Shape Integrated; vertically suspended
Coupling WN coupling, TD coupling
Application Shinkansen
Specification
sample
Gauge 1435 mm
Gear ratio 81/29 = 2.79
Wheel
diameter
860 mm
Maximum
operation
speed
300 km/h
Method Single stage deceleration method using a helical gear
Shape Integrated; diagonally suspended
Coupling TD coupling
Application Suburban trains, commuter trains, subways
Specification
sample
Gauge 1067 mm
Gear ratio 97/16 = 6.06
Wheel
diameter
860 mm
Maximum
operation
speed
120 km/h
Method Single stage deceleration method using a helical gear
Shape Split; vertical suspended
Coupling Universal joint
Application LRVs
Specification
sample
Gauge 1067 mm
Gear ratio 64/11 = 5.82
Wheel
diameter
610 mm
Maximum
operation
speed
40 km/h

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