A Victorian Railways Cast Steel 50 Ton Ride Control bogie with Roller Bearings and spoked wheels, these where designed for use on Broad Gauge and Standard Gauge bogie exchange rollingstock. This is the Front Bogie on Standard Gauge and is painted Red with a W.C of 5ft 9in and 3ft 0 1/4in dia wheels, b.r.base0, is located Z-Axis 0.
The WGNS SG 30 bogie was one of the first bogie exchange type for use on Standard Guage, it was built from 1961 for ELF, VLF and QCF Wagons for use on the Standard Guage, the Code 'F' was changed with a 'X' in 1963 with 'X' meaning bogie exchange, in mid 1960's it was replaced by the newer design WGNS 30/30B type which could have the wheels swapped out with 5ft 3in or 4ft 8.5in while the WGNS SG 30 had the frames built to 4ft 8.5in wheelsets only.