The Link-Belt 350 X4 is a heavy-duty hydraulic excavator designed for optimal performance and durability in demanding construction and earthmoving applications. It features a robust Isuzu AQ-6HK1X engine delivering a net power output of 268 hp (200 kW) at 1,900 rpm with a displacement of 7.8 liters (475 cu in), ensuring efficient fuel consumption while maintaining strong power and torque of 729 lbf-ft (988 Nm) at 1,500 rpm. The machine has an operating weight of approximately 82,400 lbs (37.4 metric tons), providing stable and powerful operation on job sites. It offers a maximum digging depth of 24.1 ft and a maximum ground reach of 36.0 ft, optimizing excavation efficiency. The 350 X4 is equipped with advanced hydraulic systems including electronically controlled pumps and a proprietary valve system that improve cycle times and hydraulic flow for faster machine response and increased lifting and breakout forces, with bucket digging force reaching up to 56,160 lbf under power boost. It features a 21 ft 2 in boom paired with optional arm lengths such as 10 ft 8 in or 13 ft 3 in, adaptable to various job requirements. Multi-function hydraulics and an auxiliary circuit support attachments like hammers, grapples, and thumbs, enhancing versatility. The operator cabin provides ergonomic controls, with a 7" high-definition LCD monitor and climate control, contributing to improved productivity and comfort. The excavator's design includes enhanced travel components for durability, reinforced undercarriage elements, and a unique side-frame to reduce dirt accumulation. With Link-Belt’s RemoteCARE technology, machine health and location monitoring are accessible remotely, promoting uptime. The 350 X4 complies with Final Tier 4 emissions standards without requiring a diesel particulate filter (DPF), simplifying maintenance. This model carries a five-year/5,000-hour full machine warranty and integrates precision grade and machine control technologies to boost accuracy and reduce rework on job sites.