The bogies are produced under the cooperation between Zhuzhou Wagon Works and ABC-NACO who took swing-type bogies as prototype. The new bogies have such features as three-pieced cast structure, bolster spring for secondary level suspension and swinging mechanism for primary suspension, and two leveled longitudinal and horizontal rigidity, improving a great deal horizontal flexibility of the vehicle, minimizing wearing-down between wheels and tracks, and elevating operation quality.

Principal technical parameters:  

Deadweight/t   4.15 

Axle load/t  21 

Design speed /km/h  120 

leverage ratio   6.48 
|
load on center plate /t  37.6

rigid wheelbase /mm  1750

side bearing center distance /mm   1520

free height of center plate /mm    705 

static spring deflection for empty/loaded cars /mm  18.5/63

minimum radius of curvature negotiable /m  100