Under the Whyte notation for the classification of steam locomotives, 2-6-0+0-6-2 represents the wheel arrangement of an articulated locomotive with two separate swivelling engine units, arranged back to back with the boiler and cab suspended between them. Each engine unit has two leading wheels in a leading truck, six powered and coupled driving wheels on three axles and no trailing wheels.
The Commonwealth Railways G class was a class of twenty-six 4-6-0 tender locomotives of the Commonwealth Railways, Australia. The class operated between Port Augusta and Kalgoorlie on the 1435 mm Trans-Australian Railway.
The South Australian Railways A Class locomotives arrived for the South Australian Railways in September and October 1868 from Robert Stephenson and Company. A third and final locomotive was ordered and arrived in 1873, these locomotives were withdrawn between 1893 and 1924 from the SAR after many years of hard service.
The South Australian Railways C Class locomotives were built by the Robert Stephenson and Company for the South Australian Railways in 1856. The first locomotive was in service by November 1856, with the second engine in service by January 1857. They were both withdrawn after long service lives, with No. 5 being withdrawn after 50 years working on the SAR. No. 6 lasted well into Commissioner Webbs era, finally being withdrawn in 1926 at almost 70 years old.
The two South Australian Railways F Class (1st) locomotives were built in England in 1869 by the Avonside Engine Company of Bristol. No. 21 entered service on the South Australian Railways in September 1869; No. 22 followed in October.
The South Australian Railways G Class locomotives first appeared on the South Australian Railways in 1869 after being purchased from Beyer, Peacock and Company. More locomotives were purchased and in service by 1880, and again in 1886. The G class was extinct by 1923.
The South Australian Railways Gb Class locomotives were built by Robert Stephenson and Company in 1874 and 1878 for the Glenelg Railway Company, later being acquired by the South Australian Railways (SAR) on 16 December 1899. The engines were sold to the Adelaide Glenelg & Suburban Railway Company as No. 4 and 5, then subsequently sold to the Glenelg Railway Company in November 1881 with the same numbers. When the SAR purchased the Glenelg Railway Company in 1899, they were classed Gb and renumbered 158 and 159. No. 158 was scrapped in December 1904, while No. 159 persisted until 21 February 1916, then ultimately scrapped in 1922.
The South Australian Railways Gc Class locomotive was built by Robert Stephenson and Company and entered service on the Adelaide Glenelg & Suburban Railway in 1879. In November 1881, the locomotive was sold to the Glenelg Railway Company and became their No. 6. It entered service on the South Australian Railways on 16 December 1899 following the purchase of the Glenelg Railway Company. The SAR classed this locomotive as Gc and numbered it 160. No. 160 was then scrapped on the 26th of July 1905.
The South Australian Railways Gd Class locomotives were built by Beyer, Peacock and Company for service on the Holdfast Bay railway line in 1880. They were numbered 4 and 5. In November 1881, both engines were sold to the Glenelg Railway Company and became their number 9 and 10. These locomotives entered service on the South Australian Railways in December 1899, following their purchase of the Glenelg Railway Company and thus classed Gd No. 163 and 164. Nos. 163 and 164 were both condemned as of 6 February 1925 and ultimately scrapped.
The South Australian Railways Ge Class locomotives were built by Beyer, Peacock and Company for the Glenelg Railway Company in 1897, entering service as numbers 11 and 12. They entered service on the South Australian Railways (SAR) as Ge Class Nos. 165 and 166 on 16 December 1899 following the purchase of the Glenelg Railway Company. No. 166 was condemned on the 8th of April 1929, followed by No. 165 on 4 June 1935. They were both eventually scrapped.
The South Australian Railways H Class locomotives were built by Robert Stephenson and Company in 1870 for the South Australian Railways. The first of three numbered 25, 26 and 27 were all in service by June 1871. After being a well received class, two more locomotives were ordered and were in service by October 1872. Nos. 30 and 31 arrived in August 1874. The final two locomotives ordered for the SAR arrived in August 1877 and were numbered 2 and 3. These locomotives worked on the SAR system for many years, with only one member of the class being withdrawn in 1888. The rest of the class were rebuilt over the years and lasted well into the next century with, the final locomotive being withdrawn by 1930.
The first South Australian Railways I class locomotive was built by Neilson and Company, Scotland for the Canterbury Provincial Railways, New Zealand in 1873 and numbered 9. In May 1878, the South Australian Railways (SAR) purchased it. The ship that transported it to South Australia was wrecked, but the locomotive was salvaged and entered service on the SAR in April 1879 as number 38. In 1880 or 1881, it was renumbered 48. It was allocated to "I" class – which was ultimately to be known as the "first I class" – in 1887 or 1888. In October 1905, the SAR withdrew it from service, then sold it in May 1906 to the South Australian Harbours Board for use in the construction of the Outer Harbour breakwater. It was scrapped in August 1909.
Eighteen South Australian Railways K class (broad-gauge) locomotives were built by Beyer, Peacock and Company for the South Australian Railways (SAR) between 1878 and 1884. Despite having a fundamental design flaw that affected their original role as light-line passenger locomotives, they eventually performed shunting duties exclusively. They operated for six decades.
The eight members of the South Australian Railways U class were the first narrow-gauge 1067 mm locomotives on the South Australian Railways and the first of many steam locomotives built by Beyer, Peacock and Company for the railway. They entered service in 1876: four on the Port Wakefield to Hoyleton line and four on the Port Pirie to Crystal Brook line. Subsequently they operated on the Port Wakefield, Port Pirie and Port Augusta lines.
Four South Australian Railways L class broad-gauge locomotives with a 4-4-0 wheel arrangement were built by Beyer, Peacock and Company in 1879 and entered service in March–April 1880. They were condemned in 1928 and 1931, and were subsequently scrapped.
The South Australian Railways M Class (1st) locomotives were originally built by the Avonside Engine Company for the Canterbury Provincial Railways in 1868 to 1874. They were later sent to South Australia in 1878 and were first in service on the South Australian Railways between 1880 and 1881.
The South Australian Railways O Class (1st) locomotives were built by Baldwin Locomotive Works for the South Australian Railways (SAR). They entered service in 1881 on the SAR system and were both withdrawn and scrapped by 1904.
The South Australian Railways O Class (2nd) locomotive was a 4-4-0WT built by Robert Stephenson and Company in 1868 for the Launceston and Western Railway Company. It entered service with the South Australian Railways in 1912 and was cut up in 1930.
The South Australian Railways Q Class were steam locomotives constructed between 1885 and 1892 by Dübs and Company and James Martin & Co for the South Australian Railways (SAR).
The South Australian Railways K class (narrow gauge) comprised a single locomotive. The design, by South Australian Railways Locomotive Engineer William Thow, was very similar to that of the broad-gauge K class, but it was smaller and lighter. It was allocated number 52 within the sequence allocated to the larger locomotives.
