[citation needed] None of this subclass remains in use on JR, but several examples operate on private railways.

[citation needed] 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.

210 DE10-1000 locomotives were built from 1969 with steam heating boilers and uprated DML61ZB engines offering 1,350 hp (1,005 kW).

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.