The high-strength undercarriage of a JS220 is of a fully welded X-frame construction for long-term durability even in the most demanding applications, and the rigid upper frame provides maximum durability and support.
The reinforced boom and dipper is made of high tensile strength steel, with three-piece wrapper plates and cast ends for strength and durability.
Robust cast ends and pivot bosses make the new boom and dipper on this tracked excavator extremely strong.
The turret on JS220 is welded to both the upper and lower undercarriage frames, and stiff, durable doors provide further strength.