JGR Class 5100

Class 5100
Locomotive No. 18 before being classified Class 5100
Type and origin Reference:[1] Power type Steam Builder Kitson and Company Build date 1874 Total produced 4 Rebuilder Kobe Rebuild date 1876 Number rebuilt 2
Specifications Configuration: ​  • Whyte 4-4-0 Gauge 1,067 mm (3 ft 6 in) Leading dia. 813 mm (2 ft 8.0 in) Driver dia. 1.372 m (4 ft 6.0 in) Wheelbase 5.435 m (17 ft 10.0 in) Length 13.115 m (43 ft 0.3 in) Loco weight 26 t Firebox: ​  • Grate area 1.1 m2 (12 sq ft) Boiler pressure 9.5 kg/cm2 (135 lbf/in2) Heating surface 75.9 m2 (817 sq ft) Cylinders Two Cylinder size 35.6 cm × 50.8 cm (14 in × 20 in)

The JGR Class 5100 (5100形) was a type of 4-4-0 steam locomotive used on Japanese Government Railways. The two locomotives, numbered 18 and 20, were built by Kitson and Company in the United Kingdom in 1874 as 0-6-0 locomotives of the later JGR Class 7010. They were rebuilt into 4-4-0 wheel arrangement passenger locomotives at Kobe in 1876. In 1909, the two locomotives were classified Class 5100, becoming numbers 5100 and 5101.^[2]

• Japan Railways locomotive numbering and classification