JR Freight Class DB500

The Class DB500 (DB500形) is a B wheel arrangement two-axle diesel-hydraulic locomotive type operated by Japan Freight Railway (JR Freight) on shunting duties in Japan since March 2017.[1]

Class DB500
Type and origin
Power typeDiesel-hydraulic
BuilderHokuriku Heavy Industries
Build date2016
Specifications
Configuration:
​
 • UICB
Gauge1,067 mm (3 ft 6 in)
Length7,650 mm (25 ft 1 in)
Width2,824 mm (9 ft 3.2 in)
Height3,670 mm (12 ft 0 in)
Axle load13.45 t
Loco weight26.9 t
Fuel typeDiesel
Engine type4-cycle, water-cooled
Cylinders6
Safety systemsATS-SF
Performance figures
Maximum speed25 km/h (15 mph)
Power output184 kW (247 hp) @2,000 rpm
Tractive effort66 kN (15,000 lbf)
Career
Operators JR Freight
Number in class1
NumbersDB500-1
Delivered2016
First run4 March 2017
DispositionIn service

Overview

The Class DB500 was developed to replace ageing Class DE10 diesel-hydraulic locomotives used for shunting duties at smaller freight terminals such as Shimonoseki in Yamaguchi Prefecture.[1] The locomotive has a single water-cooled four-cycle straight six-cylinder diesel engine, with a power output of 184 kW (247 hp), sufficient to haul 500-tonne trains.[1]

History

The Class DB500 entered service at Shimonoseki Freight Terminal from the start of the revised timetable on 4 March 2017.

Classification
Main article: Japan Railways locomotive numbering and classification

The DB500 classification for this locomotive type is explained below.

  • D: Diesel locomotive
  • B: Two driving axles
  • 500: Diesel-hydraulic locomotive

References
  1. DB500形液体式内燃機関車 [Class DB500 diesel-hydraulic locomotive]. Japan Railfan Magazine (in Japanese). Vol. 57 no. 676. Japan: Koyusha Co., Ltd. August 2017. p. 65.

Further reading
  • DB500形液体式内燃機関車 続報 [Class DB500 diesel-hydraulic locomotive (Follow-up report)]. Japan Railfan Magazine (in Japanese). Vol. 57 no. 678. Japan: Koyusha Co., Ltd. October 2017. p. 67.
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