The JCB Hydra-Digga + Loadall 65 was an early models built by JCB in 1957 with its innovative "Hydrachassis". This model was larger than the JCB 1 Digger which was discontinued in 1956 after 200 were built. Production of the Hydra-Digga/Loadall was in excess of 2000 units. The Hydra-Digga design formed the basis for the JCB 4 introduced in 1960 and the later JCB 3C of 1961.