JNR Class B20

Class B20
B20 10
Type and origin Power type Steam Builder Tateyama Heavy Industries Build date 1944-1947 Total produced 15
Specifications Configuration: ​  • Whyte 0-4-0T Gauge 1,067 mm Driver dia. 860 mm Length 7,000 mm Loco weight 20.3 t
Performance figures Maximum speed 45 km/h Tractive effort 3,190 kg
Career Retired 1972 Disposition Two preserved, remainder scrapped

The Class B20 is a type of 0-4-0T steam locomotive built for the Japanese Government Railways during the period 1944–47. They were built by Tateyama Heavy Industries who manufactured a total of fifteen Class B20 locomotives.

• B20 1 - Iwamizawa, Hokkaidō
• B20 10 - At Umekoji Steam Locomotive Museum in Kyoto.

• Japan Railways locomotive numbering and classification

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