| SNCF Class BB 66000 | |
| Powertype: | Diesel-electric |
| Builder: | CAFL/CEM/Alsthom/Fives-Lille/SACM |
| Builddate: | 1960–1968 |
| Totalproduction: | 318 |
| Britishclass: | Bo-Bo |
| Primemover: | MGO V16BSHR |
| Transmission: | Electric |
| Multipleworking: | Yes |
| Operator: | SNCF |
| Numinclass: | 318 |
| Fleetnumbers: | BB 66001–BB 66318 |
| Locale: | France |
The SNCF Class BB 66000 is a class of 318 centre cab diesel locomotives built for SNCF by a consortium of CAFL, CEM, Alsthom, Fives-Lille and SACM between 1960 and 1968.
Numbered from BB 66001 to BB 66318, the locomotives were long and weighed . Powered by an MGO V16BSHR diesel engine developing, they had a maximum speed of . They were intended for shunting and trip working. Though designed as a mixed traffic locomotive, they had no provision for train heating and could be seen working with boiler vans on passenger services. With the general introduction of electric train heating they were relegated to freight work.[1]
Under the original SNCF numbering scheme the first 80 locomotives were numbered 040 DG 1 to 040 DG 81.[2]
11 members of the class were rebuilt in the early 60s with a more powerful engine and designated Class BB 66600.
Between 1985 and 1989, 34 locomotives were regeared for higher tractive effort and designated as Class BB 66700.[3]
From 2004 some 91 members of the class were rebuilt with new MTU engines and reclassified as BB 69200.[4]
9 examples have been preserved: