Japanese
Steam locomotive

Class B50

1928 - 1958

A small to middle sized Tender-Engine for shunting operations.

A total of 46 saturated steam utilization engines, of the 4-4-0 tender type class 6700, were manufactured in Japanese private engine builders from 1911.
Of the class 6700, a total of 27 were reconstructed to " Superheated Boiler " type engines during 1928-1930, at the Ministry of Railways works, and were named class B50.

After coming on the scene, B50s were restricted to yard work mainly in the West part of Japan, much like that of ; Takatori (Kobe), Wakayama, Ryuge, (Osaka), Toyooka, Miyahara (Osaka), Suita (Osaka), Yoshizuka (Fukuoka) and Nagasaki depot. And they were used until 1957.
The last B50s were B50-10 and 26, they were deregistered during 10 November 1958 at the JNR Suita works. All engines were scrapped.




Class B50 No.11, at Takatori depot. Jan.1932
(Photo credit to JNR Takatori workshops by K.N.)



Primary ran line in last 10 years Takatori, Wakayama, Ryuge, Takasago, Suita, Toyooka, Miyahara, Nagasaki, and Yoshizuka depot.
Last line/depot and year Suita works 1958
Restored engine none
Preserved engine none



Configuration 4-4-0 Dimensions Length (mm) 15826
Engine Weight (Operating tons) 27.6 Driver size (mm diameter) 1600
Boiler pressure (Kg/cm2) 12.0 Manufactured years 1928-1930
Total production 27 Gauge 3ft 6in (1067mm)


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