| Class DE10 | |
| Powertype: | Diesel-hydraulic |
| Builddate: | 1966 - 1978 |
| Builder: | Kisha Seizo, Nippon Sharyo |
| Locoweight: | 65 t |
| Uicclass: | C'B' |
| Britishclass: | C-B |
| Disposition: | 138 units in operation; 1 unit preserved |
| Totalproduction: | 708 |
| Wheeldiameter: | 860 mm |
| Poweroutput: | 1250abbr=onNaNabbr=on, 1350abbr=onNaNabbr=on (DE10-1000 onward) |
| Maxspeed: | 85abbr=onNaNabbr=on |
| Length: | 14,150 mm |
| Width: | 2,950 mm |
| Height: | 3,965 mm |
| Transmission: | Hydraulic |
| Operator: | JNR, JR Hokkaido, JR East, JR Central, JR West, JR Shikoku, JR Kyushu, JR Freight |
| Numinclass: | 138 |
The is a class of Japanese C-B wheel arrangement diesel-hydraulic locomotives. 708 locomotives were built between 1966 and 1978.[1], 138 locomotives remained in operation.[2]
158 DE10-0 locomotives were built with steam heating boilers for passenger use.
None of this subclass remains in use on JR, but several examples operate on private railways. DE10 1 is preserved at JR Shikoku's Tadotsu depot.
74 DE10-500 locomotives were built from 1968 with concrete ballast in place of the steam heating boilers for freight use. None of this subclass remains in use on JR, but several examples operate on private railways.
One prototype locomotive, DE10 901, was built in 1967 as a heavy shunting locomotive with ballasting increasing the weight to 70 tonnes. This formed the basis for the Class DE11 design.
210 DE10-1000 locomotives were built from 1969 with steam heating boilers and uprated DML61ZB engines offering 1350abbr=onNaNabbr=on.
265 DE10-1500 locomotives were built from 1969 with uprated DML61ZB engines and concrete ballast in place of the steam heating boilers for freight use.
JR Freight shunting locomotives rebuilt in 2009 from former JR East Class DE15 snow-plough locomotives. The conversion histories and former identities of this sub-class are as follows.[3]
| Loco No. | Former No. | Date built | Manufacturer | Date converted | Date withdrawn | |
|---|---|---|---|---|---|---|
| DE10 3001 | DE15 1001 | 6 December 1971 | 5 June 2009 | |||
| DE10 3501 | DE15 1510 | October 1973 | Nippon Sharyo | 8 May 2009 | ||
| DE10 3502 | DE15 1516 | 16 December 1975 | Nippon Sharyo | 7 April 2009 | 25 November 2009 | |
| DE10 3503 | DE15 2567[4] | 14 January 1976 | Nippon Sharyo | 29 May 2009 | FY2011 | |
| DE10 3504 | DE15 1522 | 2 March 1976 | Nippon Sharyo | 24 April 2009 | FY2011 | |
| DE10 3505 | DE15 1523 | 9 March 1976 | Nippon Sharyo | 6 April 2009 | ||
| DE10 3506 | DE15 1529 | 4 October 1976 | 15 May 2009 | |||
| DE10 3507 | DE15 1530 | 7 October 1976 | Kawasaki Heavy Industries | 24 June 2009 | ||
| DE10 3508 | DE15 1536 | 9 September 1977 | Kawasaki Heavy Industries | 7 April 2009 | ||
| DE10 3509 | DE15 2505 | 21 October 1977 | Nippon Sharyo | 18 May 2009 | ||
| DE10 3510 | DE15 2506 | 28 October 1977 | Nippon Sharyo | 19 May 2009 | ||
| DE10 3511 | DE15 1539 | 10 November 1978 | Kawasaki Heavy Industries | 23 April 2009 | ||
| DE10 3512 | DE15 2513 | 15 November 1978 | Kawasaki Heavy Industries | 12 May 2009 | ||
| DE10 3513 | DE15 2524 | 20 November 1980 | Kawasaki Heavy Industries | 27 April 2009 |
See main article: Japan Railways locomotive numbering and classification. The DE10 classification for this locomotive type is explained below.