The Class B20 is a type of 0-4-0T steam locomotive built for the Japanese Government Railways during the period 1944–47. They were built by Tateyama Heavy Industries who manufactured a total of fifteen Class B20 locomotives.

The JNR Class B20 is a 0-4-0T Switcher-type side tank saturated steam locomotive operated by the Japanese National Railways. The B20 was designed under the Important Industrial Control Law as a small steam locomotive intended for industrial use.

Designed during wartime when supplies were scarce, the locomotive used substitute materials and simplified manufacturing methods, making it the only JNR saturated steam locomotive (The steam evaporated in the boiler is sent directly to the cylinder.

B20 is based on Japanese National Railways (JNR) Class B20 No. B20 10, displayed at the real Kyoto Railway Museum. B20 was built in 1946 by Tateyama Heavy Industries. Following retirement, the engine was moved to the Umekoji Steam Locomotive Museum (later the Kyoto Railway Museum) in 1972.

The Class B20 is a type of 0-4-0T steam locomotive built for the Japanese Government Railways during the period 1944–47. They were built by Tateyama Heavy Indus...

Japan National Railways (JNR) steam locomotives here refers to steam locomotives manufactured or converted by Japan's national railroads during the 50 years from 1910 to the beginning of 1960. The locomotive types, named according to the type nomenclature revised in 1928, range from B20 to D62, as well as including types 8620 and 9600.

B20 No.10 in Kagoshima. Blueprint and B20 No.3. Structure. The locomotive is a single, two-cylinder, saturated side tank locomotive with an axle arrangement of 0-4-0(B), but there is nothing of special note in terms of technology. The steam dome and sand box are rectangular, and finishing work is either omitted or kept to a minimum.

JNR B20 - steam locomotive build by Tateyama HI.

JNR B20 Class This class was the smallest loco in JNR steam fleet then and missed most standard JNR practices. Actually this class was a JNR version of standardised war time industrial loco developed in WWII.

2024年1月19日 · JNR Class B20 Wikipedia (Text) CC BYSA The Class B20 is a type of 040T steam locomotive built by the Japanese Government Railways from 1944 to 1947. A total of 15 Class B20 locomotives were built.