RAILCAR TRUCK ROLLER BEARING ADAPTER-PAD SYSTEMS

摘要

A railcar truck and adapter pad system for placement between a roller bearing and side frame pedestal roof of a three-piece railcar truck. Many different features of the pad and/or the adapter-pad interface are configured to improve stiffness characteristics to satisfy both curving and high speed performance of the railcar truck.

主权项

1. A roller bearing adapter pad system configured for use with a three-piece truck comprising:
a roller bearing adapter configured to engage a roller bearing, the roller bearing adapter comprising:
a top surface; anda bottom surface configured to engage a roller bearing; an adapter pad configured to engage a side frame pedestal roof, the adapter pad comprising:
a top plate;a bottom plate; andan elastomeric member disposed between the top and bottom plate; wherein the combined top plate, bottom plate, and elastomeric member provide a longitudinal stiffness of at least 45,000 pounds per inch, a lateral stiffness of at least 45,000 pounds per inch, and a rotational stiffness of at least 250,000 pound*inches per radian of rotation.