2022 JCB 35Z, New Generation 3.5T Mini Excavator Introducing The New Stage V 35Z-1 Zero Tailswing Mini Excavator. The New Generation 3.5T Compact Excavators. The New 35Z-1 Is One Of The New Generation Stage V Machines With No Need For Electronic Control, Aftertreatment Or Egr. It Has Zero Tailswing For Easy And Safe Maneuverability, Especially In Confined Spaces And 100% Steel Bodywork.