Progress Rail ORN Class
The ORNs are Progress Rail GT46CU-ACe Gen IIIs built in Muncie, Indiana, for One Rail's Queensland coal work, with an eye on reliability, fuel economy and low oil use. The first four, ORN001-ORN004, arrived at Mackay in 2022, and more turned up in 2025 to make seven.
References
'ORN Class', Railtram Australia (accessed October 2026)
'Magnetic Rail Group', Wikipedia (accessed October 2026)
Technical details
| Model Number | GT46CU-ACe Gen III |
|---|---|
| Builder | Progress Rail, Muncie, Indiana, USA |
| Locomotive Numbers | ORN001-ORN007 |
| Number in Class | 7 |
| Introduced | 2022 |
| Gauge | Narrow Gauge (1,067mm or 3' 6") |
| Axles | Oº-Oº-Oº Oº-Oº-Oº Co-Co |
| Mass | 134t |
| Engine | EMD 710 |
| Power | 3356kW (traction) |
Class roster
7 of 7 locomotives
| ORN001 | ? | 2022 | - | - | |
| ORN002 | ? | 2022 | - | - | |
| ORN003 | ? | 2022 | - | - | |
| ORN004 | ? | 2022 | - | - | |
| ORN005 | ? | 2025 | - | - | |
| ORN006 | ? | 2025 | - | - | |
| ORN007 | ? | 2025 | - | - |