Blomberg B

The Blomberg B is a 2-axle bogie that was introduced by EMD in 1939 with the FT locomotive series; the original "B" version plus later "M" and "X" versions were quite successful and became standard equipment on a multitude of locomotive models.

They are easily identified by prominent "swing hangers" on each side which widen the effective spring base and provide a better ride.

As of 2022 Blomberg B trucks are common sights under operating locomotives throughout North America.

EMD Blomberg B trucks are seen on other makers' locomotives; this occasionally resulted when buyers of new GE locomotives preferred trade-in EMD trucks and/or motors, instead of GE standard equipment.

The M version (meaning "modified") was introduced in 1972 with the EMD Dash 2 locomotive series; it is also used on later models such as the GP50, GP60, F40PH and F59PH, as well as the MPI MPXpress.