The four machines, with operating weights of 14-23 tonnes, feature low emission Cummins B4.5 and B6.7 S diesel engines with a combined after-treatment system and no requirement for Exhaust Gas Recirculation (EGR). HCE says the excavators offer customers increased productivity with lower emissions.
The machines also feature load sensing hydraulic systems with load independent flow sharing for increased controllability.
The revised line-up starts with the HW140A, weighing in at 14,900kg with a monoboom and 15,860kg with a two-piece main boom. This machine shares much of its undercarriage and upper-structure with the HW160A, with weights of 17,580kg/18,390kg. A compact radius HW170ACR is offered exclusively with a two-piece boom, at 18,810kg and the range is completed with the HW210A, at 22,270/23,665kg.
The HW140A, HW160A and HW170ACR are powered by a 4.5-litre Cummins B4.5 diesel engine, replacing the larger 6.7-litre engine in the previous generation of machines.
The new compact engine uses a wastegate turbocharger and has a Flex-Module two-can exhaust system, comprising a Diesel Oxidation Catalyst (DOC), Diesel Particulate Filter (DPF) and Selective Catalytic Reduction (SCR).
HCE says there is no requirement for Exhaust Gas Recirculation (EGR), reducing service cost for customers, while the smaller engine is more fuel efficient than its predecessor. Despite the reduction in engine capacity, the new machines benefit from an increased output, with the HW140A, HW160A and HW170ACR now all delivering 129kW (173hp), up from 117kW (156hp) on the previous generation HW140.
This drives the machine through a Rexroth load sensing hydraulic system, with load independent flow control for consistent machine operating speed and improved controllability for the operator.
The HW140A and HW160A excavators’ swing centre and lower frame has been moved forwards by 100mm to boost machine stability. In addition, the right-hand side of the upper-structure comes forward 150mm, to provide additional space for the fuel tank. The left-hand side moves forward by 230mm to improve visibility from the cab and to make additional space for the engine bay. The rear swing radius on the standard counterweight HW140A and HW160A also moves forwards by 200mm, to cut the rear overhang and make the machines more manoeuvrable on confined sites, while increasing lifting capacity.
Peter Sebold, product specialist at HCEE, commented on the new excavator range: "The revised boom geometry, in combination with LUDV load sensing hydraulics, provides Hyundai’s new wheeled excavators with outstanding performance in multi-function operation, smooth controllability and the necessary stability for maximum productivity."
Sebold added that Hyundai is establishing itself in a growing number of market sectors, by listening to customer feedback and responding to their requirements.
"The A-Series wheeled excavators will continue our expansion in this demanding sector of the market," he added.
In terms of attachment options, the HW140A, the HW160A and the HW170ACR have the dozer blade attachment and outriggers bolted in place to the front and rear of the lower frame. Using identical mounting hole spacing, the dozer blade and stabiliser mounts can be positioned at either end, providing a range of options for customers. Mounted on a parallel arm system, the dozer blade has an increased working range, through longer dozer link length and cylinder stroke. This offers increased blade height and cutting depth and a larger space between the blade and the tyre for easier maintenance.
On the HW210A the front stabiliser is welded in place, with the rear bolted, to provide a semi-interchangeable layout. The outrigger cylinders feature a new protection plate to reduce damage from falling debris and the outrigger design prevents the legs from penetrating into the ground when in use.
The excavators feature a new steering column, designed to offer lower and upper section tilt and a central telescopic feature. With a slimmer design and no lever on the right-hand side, this results in improved visibility to the road ahead. Optional joystick steering, using the right-hand lever, is also possible at lower operating speeds and direction change has been moved to the joysticks, ensuring maximum control for the operator. The HW wheeled excavators are now exclusively offered with proportional joystick levers, for maximum operator control and ease of use.