HD Hyundai Construction Equipment launched two heavy crawler excavator models and its largest wheel loader at Hillhead 2024.
The manufacturer unveiled its largest Stage V crawler excavators, with the arrival of the 80-tonne HX800A L and 100-tonne HX1000A L. The machines have been designed to operate in mines and quarries, as well as in bulk earthmoving for construction and infrastructure projects.
Both models are powered by Perkins diesel engines. The HX800A L uses the six-cylinder Perkins 2506J, providing 400kW (539hp) at 1,800rpm and 2,468Nm of torque at 1,400rpm. The HX1000A L is powered by the Perkins 2806J, offering 460kW (629hp) at 2,000rpm and 2,952Nm at 1,300rpm.
An electronic hydraulic power control system is designed to minimise fuel consumption, while increasing digging efficiency. It utilises nine sensors to calculate the required flow and pump output. The HX800A L has two variable displacement tandem axial piston pumps, each delivering 504 lpm of flow, while the HX1000A L has three pumps producing 523 lpm each. A closed-centre main control valve is said to ensure minimal hydraulic flow in the stand-by position.
The excavators have four operating modes and four power modes, working in combination with Variable Speed Control and Pump Torque Control. They come with a boom priority mode and a swing priority mode, to increase breakout power or slewing speed to suit the operation.
The HX800A L is suitable for 4.25-5.24m3 buckets and the 100-tonne machine will be able to work with 5.4-6.8m3 buckets. The two machines are offered with a choice of short mass excavation and longer mono booms, and with the option of two dipper am lengths.
The cab on both models offers level 2 FOPS protection when equipped with a FOPS guard. Features include a heated seat with air suspension and HD Hyundai’s All-Around View Monitoring (AVM) camera system. An 8” touchscreen monitor with rotary controller provides access to control menus. The system also connects to Bluetooth to allow control of smartphones and other devices.
“These heavyweight excavators will build on HD Hyundai’s presence at the heavier end of the market across Europe, providing a highly productive digging and loading solution for mines, quarries, bulk earthmoving contractors and heavy civil engineering sites,” said product manager Gert Peeters.
Meanwhile, the HL985A loader builds on the success of smaller A-Series machines. The machine is powered by a Cummins X12 diesel engine. This six-cylinder EU Stage V-compliant motor delivers 321kW (430hp) of power at 2,100rpm and 2,300Nm of torque, from just 1,400rpm. HD Hyundai said this is 10% more power and 20% higher torque than previous non-Performance Series engines, despite lower fuel consumption and exhaust emissions.
The loader has an Eco gauge that monitors fuel consumption in real-time. A Smart Power mode further reduces fuel use by adjusting the engine speed while loading the bucket.
Driving through a five-speed transmission with lock-up clutch, the machine can achieve maximum travel speeds of up to 40km/h. The transmission is equipped with Intelligent Clutch Cut Off (ICCO) to minimise power loss in the torque converter and prevent excessive power during braking. The loader has a hydraulically-locking differential in the front axle to ensure maximum traction when digging and loading.
Built to work with a 6.5m3 or 7.0m3 bucket, with or without teeth and cutting edges, the HL985A’s Z-bar linkage parallel lift arms provide a dump clearance at maximum height of up to 3,360mm. Bucket breakout force is up to 28,400kg and the machine has a full turn tipping load of up to 24,950kg when equipped with the heavier counterweight. The HL985A has an operating weight of around 35,350kg, depending on specification.
The A-Series loader cab is around 10% larger than previous models. The ROPS/FOPS cab has an adjustable air suspended, heated seat, with adjustable armrest. A 7” colour touchscreen provides important information at a glance.
Operators benefit from a Bluetooth audio system with a hands-free function. The HL985A also has a full colour, integrated rear view camera, visible through the main monitor. The machine is offered with HD Hyundai’s All Around Vision Monitor (AAVM) system.
“The HL985A sets a new performance and productivity standard for HD Hyundai in the heavy wheel loader sector,” said product manager Stefan Schwill. “Suitable for a wide range of tasks, in quarrying, recycling and re-handling applications, the HL985A offers more power for less fuel used, delivering a total cost of ownership benefit for customers.”
