In 1974, the railways introduced to service a short wheelbase bogie hopper wagon. It was a multi purpose design that featured the ability to have a removable roof and discharge doors to suit traffic changes.
The wagons for cement traffic were coded JCX: J-Bogie hopper, C-Cement, X-Bogie exchange. The number group was 101 - 115.
First built JCX 101 features 'scallopped' ends; all other JCX/JCF vehicles have plain ends.
The class was temporarily code JCF_ before conversion back to JCX in 1978.
The JCX class was recoded to VHCX in the 1979 recoding.