JŽ class 20

Class 20 Steam Locomotives

Industry	Railway locomotives manufacturing
Founded	1912
Defunct	1922
Products	Steam locomotives

Class 20 Steam Locomotives

Class 20 represents a series of steam engines constructed for Yugoslav Railways alongside various other railway operators. These locomotives were produced between 1912 and 1922 by prominent manufacturers such as Hanomag, Borsig, AEG, Krauss, and Rheinmetall.

The production run comprised a total of 243 units, with serial numbers ranging from 6001 to 6200, as well as additional batches identified by numbers including 601 to 620, and several others like 860.003 through 860.020. After 1933, the numbering system shifted to a format from 20-001 through 20-225.

These locomotives served numerous rail networks, including the CFO (units 521–523), SEK (241–243), SDŽ (601–623), the Austro-Hungarian army (860.001–022), and the SHS (601–613, among others). Other operators included JDŽ, BDŽ, HSH, PKP, NKPS, CFR, and the SŽD.

Various rebuilds and transfers occurred across these operators: CFO/SM rebuilt three units; SEK received three units from CFO/SM; SDŽ rebuilt twenty-three; k.u.k. HB reconstructed twenty-two (including two from SDŽ); SHS/JDŽ refurbished 225 units (seventeen from SDŽ and eight from k.u.k. HB); BDŽ acquired twenty-two from JDŽ; HSH obtained two from JDŽ; PKP rebuilt four from k.u.k. HB; NKPS had three from PKP; CFR rebuilt nine units (one from NKPS and eight from k.u.k. HB); and SŽD had one unit rebuilt from CFR.

Technical specifications include a UIC classification of 1'C+2'2', a length of 18,820 millimeters, a locomotive weight of 54 tons, and power output rated at 552 kilowatts. The maximum operational speed ranged between 55 and 65 kilometers per hour.

The Class 20 locomotives were primarily operated by Yugoslav Railways and Hekurudha Shqiptare until their withdrawal, which for HSH occurred around the 1960s.

An example of this class remains preserved as a monument in Trebnje.

Albania

In 1946, two units, numbered 20-132 and 20-136, were introduced to Albania. These locomotives were withdrawn from active duty approximately around 1960.

Preserved

• Locomotive 20-100 (formerly SHS 6100) is maintained in Niš, Serbia
• Locomotive 20-149 (formerly SHS 6149) is kept in Zrenjanin, Serbia
• Locomotive 20-196 (formerly SHS 6196) is exhibited in Sombor, Serbia
• Locomotive 20-184 (formerly SHS 6184) is preserved in Jasenovac, Croatia
• Locomotive 20-183 (formerly SHS 6183) is conserved in Trebnje, Slovenia