Dalman 2 Level trucks could also be equipped with the Barber Lateral Motion Device. This feature used steel rollers and a roller seat between the springs and bolster to provide a little side-to-side movement of the car body to the track, reducing wear to wheel flanges, journals and couplers. Railroads using these trucks included ATSF, CN, CP, CNJ, CB&Q, CNW, IC, MP (and subsidiaries I-GN and StLB&M), NP, RI, and SP.
Below is a link for the data sheet about this truck.
TMW-102 / TMW-202 Data Sheet
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