X (steam locomotive)

The steam locomotive X is a Russian freight locomotive of type 1-4-0 (the first steam locomotive of this type on Russian railways) produced by the American Baldwin plant (Baldwin) . In the early 1900s, steam locomotives were modernized: they installed steam superheaters , and the steam engine was replaced by a simple compound. Such locomotives assigned the designation X ^p .

X
Production
Country of construction	USA
Factory	Baldwin
Years built	1895 , 1898 - 1900
Total built	235
Technical details
Axial formula	1-4-0
Steam locomotive length	10 443 mm
Diameter of runner wheels	915 mm
Diameter of the driving wheels	1270 mm
Track width	1524 mm
Official weight of the locomotive	58–66.3 t
Adhesion weight	51–58.7 t
Load from driving axles on rails	13.3—16.1 tf
Structural speed	53 km / h
Boiler steam pressure	12 kgf / cm²
Full evaporative heating surface of the boiler	171.9—181.3 m², 134.6 m² (X p )
Superheater type	two-turn Schmidt, Lopushinsky
Superheater heating surface	33.5—38.7 m²
Grate area	2.09–3.25 m²
Steam engine	compound of Voklena system, simple
Number of cylinders	2
Bore	383/584 mm, 540 mm
Piston stroke	660 mm, 650 mm
Exploitation
A country	Russia ( USSR )

Also X series ( Murmansk ) steam locomotives belong to the X series. These locomotives were manufactured in 1915-1916. at the American factory Porter and got into Russia during the period of foreign intervention with the occupying forces. After the withdrawal of the occupying troops, the locomotives hit the Murmansk railway . They had nothing in common with the other locomotives of the series except for the country of construction and the axial formula.

In 1923, there were still 127 locomotives of the X series (including X ^m ), in 1940 - 26, and in 1955 the last locomotives of the series were completed.