A heavy-duty truck assembly mounted under a locomotive or self-propelled car that houses the electric traction motors geared directly to the axles. It supports the weight of the car body while providing the driving force to the rails. These units are designed to pivot independently to negotiate curves while transmitting massive torque.
Heard on the job
We had to drop the rear motor bogie to replace a burnt-out traction motor on the number three axle.
Also heard as
- power truck
- motor truck
Related terms
Bogie
A wheeled chassis or framework attached under a rail vehicle to provide support, suspension, and guidance along the track.
Traction motor
A heavy-duty electric motor geared directly to the axle of a locomotive or transit car.
Truck
The swiveling wheel and axle assembly located under each end of a railroad car or locomotive.