JNR Class DF50
Japanese diesel locomotive type
- Hitachi
- Kawasaki
- Kisha Seizō
- Mitsubishi
- Nippon Sharyō
- Toshiba
| Specifications | |
|---|---|
| Configuration: | |
| • UIC | Bo'Bo'Bo' |
| • Commonwealth | Bo-Bo-Bo |
| Gauge | 1,067 mm (3 ft 6 in) |
| Wheel diameter | 800 mm (2 ft 7 in) |
| Length | 16,400 mm (53 ft 10 in) |
| Width | 2,932 mm (9 ft 7.4 in) |
| Height | 3,987 mm (13 ft 1.0 in) |
| Loco weight | 85.1 t |
| Traction motors | MT48 x 6 |
| Performance figures | |
|---|---|
| Maximum speed | 90 km/h (55 mph) |
| Power output | 1,060 hp (DF50-0), 1,200 hp (DF50-500) |
| Career | |
|---|---|
| First run | 1957 |
| Last run | 1983 |
| Preserved | 3 |
The Class DF50 (DF50形) is a class of Bo-Bo-Bo wheel arrangement diesel-electric locomotives operated by Japanese National Railways (JNR) in Japan from 1957 until 1983.[1]
Variants
DF50-0
The first batch of 65 locomotives was built between 1957 and 1962 with Sulzer 8-cylinder 8LDA25A 1,060 hp diesel engines.[1][2] Production was shared between Kisha Seizō, Mitsubishi, and Nippon Sharyō.[2]
-
DF50 1 on a passenger service in 1979 -
DF50 65 on a freight working in 1982
DF50-500
A later batch of 73 locomotives was built between 1958 and 1963 with MAN V6-cylinder V22/30 1,200 hp diesel engines.[1][2] Production was shared between Hitachi, Kawasaki, and Toshiba.[2]
-
DF50 573 on a passenger service in Shikoku in 1979
Operations
Class DF50 locomotives were intended for use on both passenger and freight services, and included a steam generator for train heating.[3] They operated on the following lines, including use hauling "Blue Train" sleeping car services.[2]
In later years, operations were restricted to Kyushu and Shikoku, with the remaining locomotives withdrawn in 1983, except for DF50 1, which later passed into JR Shikoku ownership.[1]
Livery
The locomotives were initially painted in all-over maroon with stainless steel bands, but were subsequently repainted into the standard JNR diesel locomotive livery of vermillion and grey.[2]
Preserved examples
Three Class DF50 locomotives were preserved.[3]
- DF50 1: Preserved at The Railway History Park in Saijo, Ehime
- DF50 4: Preserved in a park in Osaka
- DF50 18: Formerly preserved at the Modern Transportation Museum, Osaka, but moved to the Tsuyama Railroad Educational Museum in Tsuyama, Okayama in March 2015[4]
-
Preserved DF50 1 at The Railway History Park in Saijo in May 2015 -
Preserved DF50 18 at the Tsuyama Railroad Educational Museum in May 2016
Classification
The DF50 classification for this locomotive type is explained below.
- D: Diesel locomotive
- F: Six driving axles
- 50: Locomotive with maximum speed exceeding 85 km/h
References
Wikimedia Commons has media related to JNR DF50.
- ^ a b c d JR全車輛ハンドブック1995 [JR Rolling Stock Handbook 1995] (in Japanese). Japan: Neko Publishing. 1995. p. 71.
- ^ a b c d e f Inoue, Kōichi (1999). 国鉄機関車事典: 蒸気・電気・ディーゼル機関車66形式 国鉄機関車辞典 [JNR Locomotive Encyclopedia] (in Japanese). Japan: Sankaido. pp. 182–183. ISBN 978-4-381-10338-3.
- ^ a b Sasada, Masahiro (September 2012). 国鉄&JR保存車大全 [JNR & JR Preserved Rolling Stock Complete Guide] (in Japanese). Tokyo, Japan: Ikaros Publications Ltd. pp. 34, 127. ISBN 978-4863206175.
- ^ DF50 18が津山に向けて陸送される [DF50 18 moved to Tsuyama]. RM News (in Japanese). Japan: Neko Publishing Co., Ltd. 11 March 2015. Archived from the original on 5 August 2018. Retrieved 11 March 2015.
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Japanese National Railway Diesel Locomotivesprototypes
- DB10
- DC10
- DC11
- DD10
- DF40
- DF41
- DF50
- DF90
- DF91 I
- DF91 II
- DF92
- DF93
- 911
- 912
- ケDB10
- ケDB11
Japanese railway locomotives | ||
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| Steam locomotives |  | |
| Diesel locomotives | ||
| Electric locomotives |
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 Locomotives of Shikoku Railway Company | |
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| Diesel |
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