A four-axle 440S Uacs tank railcar is designed for transport of powdered materials with bulk density of 0.5-1.4 t/m3 (e.g. cement, lime, blast-furnace ash). It is equipped with one two-chamber tank with total capacity of 55.2 m3 (2 x 27.6 m3). The railcar is loaded by means of gravity via two charge manholes located on top of the tank and unloaded pneumatically at maximum working pressure of 0.25 MPa. The railcar unloading system is designed so to allow for unloading of each tank chamber individually or both chambers at once.


Railcar technical specification
Maximum railcar speed in an empty condition 120 km/h
Maximum railcar speed in a loaded condition 100 km/h
Railcar length over buffers 15 040 mm
Railcar tare 24 000 kg
Track gauge 1 435 mm
Minimum curve radius 35 m
Bogie type Y25Ls1-K
Rolling wheel diametre 920 mm
Brake system Knorr
Control valve KE2DVSL/D
Parking hand brake from the platform
Maximum loading capacity 66 000 kg
Charge manhole spacing 3 200 mm
Charge manhole diametre 500 mm
Time of unloading of 2 tank chambers at once 30 min
Air demand per unloading pipe > 5 m3/min