1974
The B 350H locotractors were designed by CFD in 1974 for the industrial branch line market, until then dominated by the Moyse company, which offered diesel-electric locotractors with chain transmission.
The B 350H locotractor with its CFD powershift gearbox provided the same tractive effort as the Moyse machines, but by replacing the chains with a linkage to the axles via axles and cardan shafts, and the brake cylinders with brake blocks, the CFD machine had reduced maintenance costs.
| Features | Values | |
| Total weight | 40 to 44 tonnes | |
| Longueur | 9190 | |
| Empattement | 3850 | |
| Wheel diameter | 1050 | |
| Minimum curved entry rail | 60 metres | |
| Top speed | 28 km/h | |
| Hook effort (limited by grip) | 20 tons | |
| Diesel | 300 to 400 horsepower | |
| Converter | Borg Warner 17-inch | |
| First: 4.72 | second: 2.46 | |
| Bridge | CFD ratio 6.26 |
| Customer | Specific Features |
| Transfesa | The locotractor is equipped with variable gauge standard track/wide-track axles |
| TSOL | The locotractor is equipped with a CFD gearbox with 2 speeds and 2 ranges |
| Cogefar | Deck reduction is three instead of 6.26. |
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