The reference for locomotives and railcars
Japanese National Railways class D60
Japan | 1951 | 78 produced
D60 1 on display at the Yamaguchi Museum
D60 1 on display at the Yamaguchi Museum

In order to reduce the axle load of the trailing axle of the D50 class with a 2-8-2 wheel arrangement, a two-axle bogie was installed in its place from 1951. Along with other modifications, the D60 class was created. The D51 class was converted into the D61 class and the D52 class into the D62 class in the same way. In addition, the cylinder diameter had been reduced from 570 to 550 mm to reduce the tendency to slip. The locomotives were retired between 1966 and 1974. Four have survived to this day.

Axle config2-8-4 (Berkshire) 
Gauge3 ft 6 in (Cape gauge)
Dimensions and Weights
Length65 ft 8 9/16 in
Wheelbase33 ft 7 9/16 in
Fixed wheelbase15 ft 5 7/16 in
Total wheelbase56 ft 7 15/16 in
Service weight179,809 lbs
Adhesive weight120,549 lbs
Total weight287,835 lbs
Axle load30,137 lbs
Water capacity4,491 us gal
Fuel capacity26,455 lbs (coal)
Power sourcesteam
Estimated power1,408 hp (1,050 kW)
Optimal speed26 mph
Top speed43 mph
Starting effort34,873 lbf
Power Plant
Driver diameter55.1 in
Boiler pressure186 psi
Expansion typesimple
Cylinderstwo, 21 5/8 x 26 in
Grate area35 sq ft
Firebox area163.6 sq ft
Tube heating area1,312.1 sq ft
Evaporative heating area1,475.7 sq ft
Superheater area809.4 sq ft
Total heating area2,285.2 sq ft
Calculated Values
steam locomotive
last changed: 03/2023

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