HYUNDAI HL770-7 WHEEL LOADERS

Technical Description

The Hyundai HL770-7 is a robust wheel loader designed for heavy-duty material handling with a breakout force of 45,770 lbs (20,761 kg) and a heaped bucket capacity of 5.3 cubic yards (4 m³). It features a 10.2 ft (3 m) wide bucket and provides a dump clearance of 10.5 ft (3 m) at maximum raise, enhancing efficient load dumping. Its dimensions include an operating weight of approximately 50,265 lbs (22,800 kg), a wheelbase of 11.3 ft (3.4 m), and a ground clearance of 1.6 ft (0.48 m), supporting good maneuverability on rough terrain. Powered by a turbocharged QSC8.3-C six-cylinder engine with a displacement of 506.5 cubic inches (8.3 L), it delivers 280 hp gross power (266 hp net power) at 2200 rpm and peak torque of 1000 lb-ft at 1400 rpm. The hydraulic system is an open-centered, tandem circuit with a pump flow capacity of 108.6 gal/min (409 L/min) and pressure relief set at 2990 psi, enabling quick cycle times: 1.4 seconds dump, 5.7 seconds raise, and 2.8 seconds lower. The HL770-7’s transmission is a single-stage, single-phase, 3-element torque converter with 4 forward and 3 reverse gears, achieving a top speed of 23.7 mph (37 kph) forward. Equipped with 26.5-25 20 PR L3 tires and a rear axle oscillation of 26°, it is designed for stability and traction. Fuel capacity is 113.6 gallons (430 L), with hydraulic and engine oil capacities of 84.6 gal and 5.3 gal respectively, ensuring long operating cycles and efficient maintenance. This model integrates heavy-duty performance, operational efficiency, and durability for demanding construction and mining tasks.