JNR Class B50

JNR Class B50
B50 2 at an unknown date
Technical specifications
Manufacturer(s)	JGR's Hamamatsu Works, JGR's Kokura Works, JGR's Ōmiya Works, JGR's Takatori Works
Build date	1928 – 1930
Total produced	27
Classification	4-4-0
Dimensions	15,826 mm × Unknown × 3,785 mm
Rail gauge	3 ft 6 in (1,067 mm)
Valve gear	Walschaerts
Cylinders	2
Boiler pressure	12.0 kg/cm²
Fuel type	Coal
Heating area	91.5 m²
Service information
Years in-service	1928 – 1958
Running numbers	B50 1 – B50 27
Disposition details
Preserved	None
Number scrapped	27

The JNR Class B50 was a 4-4-0 American-type superheated steam locomotive operated by the Japanese Government Railways from 1928 to 1958.

History

The Class B50 is in essence a superheated derivative of the Class 6700 locomotives. The locomotives were converted from twenty-seven Class 6700 locomotives from 1928 to 1930, with the conversions taking place at JGR's Hamamatsu, Kokura, Ōmiya and Takatori Works.

These, like the Class 6700s, were also used to pull short passenger trains. They were mostly located around the Nagoya and Osaka regions. In their later lives the locomotives were used for shunting. All locomotives were retired by 1958, with none sold to private railroads. No Class B50s have been preserved.