Sydney Trains K set
| K set | |
|---|---|
K81 arriving at Summer Hill station | |
Lower deck | |
| In service | 1981–present |
| Manufacturer | A Goninan & Co |
| Built at | Broadmeadow |
| Constructed | 1981–1985 |
| Refurbished | late 1990s, early 2020s (life extensions) |
| Number built | 160 carriages (40 sets) |
| Number in service | 92 carriages (23 sets) |
| Number retired | 68 carriages (17 sets) |
| Successor | Converted H sets |
| Formation | 4-car sets |
| Fleet numbers |
|
| Capacity | 452 (108 in power cars, 118 in trailers) |
| Operators | Sydney Trains |
| Depots | Flemington |
| Lines served | |
| Specifications | |
| Train length | 81.54 m (267 ft 6+1⁄4 in) |
| Car length | 20,385 mm (66 ft 10+1⁄2 in) |
| Width | 3,036 mm (9 ft 11+1⁄2 in) |
| Height | 4,368 mm (14 ft 4 in) |
| Doors | Sliding pocket, 2 per side |
| Maximum speed | 115 km/h (71 mph) |
| Weight | 188 t (185 long tons; 207 short tons) |
| Traction system | Mitsubishi camshaft resistance control |
| Traction motors | 4 × Mitsubishi 150 kW (201 hp) series wound DC motor |
| Power output | 1.2 MW (1,609 hp) |
| Transmission | 5.73:1 (86:15) gear ratio |
| Electric system(s) | 1,500 V DC (nominal) from overhead catenary |
| Current collection | Pantograph |
| UIC classification | Bo′Bo′+2′2′+2′2′+Bo′Bo′ |
| Track gauge | 1,435 mm (4 ft 8+1⁄2 in) standard gauge |
The K sets are a class of electric multiple units (EMU) that currently operate on the Sydney Trains suburban network. Built by A Goninan & Co, the K sets first entered service in 1981 operating under the State Rail Authority, and later CityRail. They originally entered service as six-car R sets (with the exception of the eight-car set R1).
When R sets later started to include sets made up of older Comeng and Goninan stock, the newer Goninan sets were retargeted as K sets and later reduced to four cars. The carriages are of stainless steel, double deck construction and share much of their design with the older S sets.
23 of the 40 K sets originally built (160 carriages) remain in service as of December 2025. The K sets are currently the oldest in the Sydney Trains fleet (including intercity trains), following the retirement of the V sets in January 2026.