Background and overview
Some DE10 vehicles built from 1968 have concrete ballast in place of a
steam heating boiler, and thick steel plate in place of a water tank for
freight use and classified into -500 subclass. Sprinklers spraying water
for a steam boiler onto radiators are not fitted because not having a water
tank for a steam boiler. DE10 520 and onward is equipped with a water tank
and sprinklers to cool their radiators.
Improvement
DE10 locomotives built from 1969 differ from previous DE10 locomotives
in having more powerful prime mover, DML61ZB, with a power output of 1350PS
by getting improved fuel injection pumps and precombustion chambers, and
were classified into -1500 subclass. Their dead weight in place of a water
tank is changed into concrete ballast.
DE10 1550 onward built from 1972 adopted new 3-axle bogie, DT141, simplifying link mechanism.
DE10 1569 onward built from 1973 are equipped with an electric fan under the ceiling of the cab and the cover for the electric fan is fitted on the roof of the cab.
Operations
Class DE10-500/1500 locomotives had been used in shunting and piloting duties besides hauling branch line freight trains. Hauls duties had been decreased by replacement with discontinuance of branch line freight trains, and discontinuance of branch lines. Shunting duties were also decreased by the change the rail freight transport system in 1984. Thus, DE10-500 locomotives had been withdrawn gradually.
At the splitting of JNR into the privatized JR companies, the six passenger railways and JR Freight of the JR Group received 184 DE10-1500 locomotives in 1987. DE10-1500 locomotives have been withdrawn caused by decreasing train hauling duties by the progress of replacement with electric/diesel multiple units. Furthermore, they have also been withdrawn caused by decreasing duties of hauling work trains and deadheading vehicles
Class DE10-1500 locomotives operated by JR Freight have been used on shunting and hauling branch line passenger and freight trains. However, they began to be replaced with new hybrid diesel/battery Bo-Bo wheel arrangement shunting locomotives, HD300, and new Bo-Bo wheel arrangement diesel-electric locomotives, DD200, and are gradually being withdrawn. |
|
| Technical Data |
| Items |
Data |
| Traction transmission |
Hydraulic |
| Service speed |
85km/h |
| Max
power |
1,350PS |
| Length |
14,150mm |
| Width |
2,950mm |
| Total mass |
70.0t |
| Axle arrangements |
A0A0A0-B0 |
| 2 axle bogie |
DT131E |
| 3 axle
bogie |
DT132A (1001-1152), DT141 (1153-) |
| Prime mover |
DML61ZB (1,350PS/1550rpm) |
| Hydraulic transmission gear |
DW6 |
| Designed by |
Japanese National Railways |
|
|
