Railroad car constant contact side bearing assembly

摘要

A railroad car constant contact side bearing assembly including a housing, a top cap arranged for vertical reciprocatory movements relative to the housing, and a spring accommodated in a spring cavity defined by the housing and cap for resiliently urging the top cap into frictional sliding engagement with an underside of a railcar body. At least one of the side bearing housing and cap is formed from a high performance plastic material whereby enhancing the vertical reciprocity of the cap relative to the housing.

主权项

1. A railroad car constant contact side bearing assembly, comprising:
a housing including upstanding wall structure defining an axis for said side bearing assembly; a non-metallic cap arranged for generally coaxial movement relative to said housing, with said cap having a generally flat upper surface and wall structure depending from said generally flat upper surface, with the wall structure of said cap combining with the wall structure of said housing to guide said cap for generally vertical reciprocatory movement during operation of said side bearing assembly; and with the generally flat upper surface on said cap extending beyond the wall structure of said housing; a spring accommodated within a cavity operably defined by the wall structure of said housing and the wall structure of said cap; a metallic insert maintained in operable association with the generally flat surface on said cap to slidably contact with an underside of said railcar whereby allowing said side bearing assembly to establish a coefficient of friction ranging between about 0.4 and about 0.9 with the railcar during operation of said constant contact side bearing assembly.