JGR Class 7700 (1894)

JGR Class 7700
JGR 157 (later 7709) at an unknown date
Technical specifications
Serial number(s)	3585 – 3596
Manufacturer(s)	Beyer, Peacock and Company
Build date	1894
Total produced	12
Classification	2-6-0
Dimensions	13,602 mm × 2,286 mm × 3,581 mm
Rail gauge	3 ft 6 in (1,067 mm)
Valve gear	Stephenson
Cylinders	2
Boiler pressure	11.6 kg/cm²
Fuel type	Coal
Heating area	101.8 m²
Service information
Years in-service	1897 – 1927
Running numbers	7700 – 7711 (originally 148 – 159)
Disposition details
Preserved	None
Number scrapped	12

The JGR Class 7700 (originally the JGR Class AG) was a 2-6-0 Mogul-type steam locomotive operated by the Japanese Government Railways from 1897 to 1927.

History

The Class 7700 was an early steam locomotive operated in Japan. The type was ordered by the JGR, with a total of twelve locomotives manufactured by Beyer, Peacock and Company in 1894. These were classified as the Class AG locomotives and numbered 148 through 159. These were later reclassified as the Class E4 with their numbers unchanged.

The locomotives were reclassified as the Class 7700 in 1909 when a formal rule regarding standardized classification of locomotives was enacted; the locomotives were thus renumbered 7700 through 7711. The locomotives were initially used on the Tōkaidō Line; in their later careers they were used on the Shin'etsu Line. The locomotives were all retired by 1927, with none sold to private railroads. No Class 7700s have been preserved. The later Class 7700 locomotives are not related to this locomotive.