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.