2024 JCB, 18Z-1 Excavators, Choosing a compact excavator just got easier thanks to JCBs new generation of compact digging machines, including the 18Z-1, a zero tailswing machine with an operating weight of 3,856 lb (1,749 kg) and a maximum dig depth of 8 feet 5 inches. Built to withstand the most demanding job sites, with proven, long-lasting components and simplified service requirements, the JCB 18Z-1 compact excavator promises less downtime and more profit.