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JNR's steam locomotive B20 class

B20 10 Nov. 2005 Umekoji Steam Locomotives Museum
From 1944 to 1945, the manufacturing industies, Tateyama, and JNR Kouriyama Works, had produced the 15 cars of this class. Then now the 2 cars are kept Umekouji steam locomotives museum and other place.

Data of B20 class
Whell arrangement 0-4-0 Grate Area(m2) 0.81
Loco. Weight in Working Order(t) 20.3 Heating Surface(m2) 35.86
Weight on Driving Wheels(t) 20.3 Loading Capacity of Water(m3) 2.5
Max Axle Weight(t) 10.86 Loading Capacity of Coal(t) 0.9
Diameter of Driving Wheel(mm) 860 Height of Boiler Cube center(mm) 2,000
Cylinder Dimensions(mm) 300X400 Length(mm) 7,000
Boiler Pressure(kg/cm2) 13.00 Height(mm) 3,150
Gauge 1,067mm(3'6")

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