AAR type A switcher truck
AAR Type A trucks were first introduced with EMD locomotives sold in 1935; they were a success, became standard on EMD switchers into the 1970s, and were also used on various other makers' locomotives. Their initial design was a collaboration between Martin P Blomberg at EMD and the originating foundry General Steel Industries. Intended for industrial plant and rail yard shunting duty, this truck has a basic suspension system with drop equalizers, secondary leaf springs and primary coil springs, which provide adequate damping and relatively simplified maintenance. It does not have swing hangers as may be seen in higher-speed designs such as the Blomberg B.
AAR type A truck
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.