Page 58 - Hub-4 Magazine Issue 75

Mobile Quarrying
& Recycling Equipment
Hyundai adds articulated
trucks to growing range
Hyundai Construction Equipment has introduced two articulated dump truck models to its rapidly expanding line of heavy construction and earthmoving equipment. The HA30A and HA45A have rated payloads of 28 tonnes and 41 tonnes respectively, providing an ideal haul truck match for Hyundai’s larger crawler excavators and wheeled loaders.
Features include:
• Equalweightdistributionwithslopingrearchassisframe delivers stability, by distributing more load on the centre of the machine, resulting in a low centre of gravity
• Tandemrearaxlebogieforhighestlevelofgroundcontact and best-in-class traction
• Innovative transmission concept results in shorter front chassis frame
• Articulationjointturningringmountedclosetofrontaxle leads to equal load distribution front to rear and across the front axle during steering
• Spaciousoperator’scab,witheasyaccessfromthefrontof the machine
Articulated Hauling
Hyundai Construction Equipment is entering the articular dump truck market with two models, that use proven, innovative design and technology to deliver high productivity and superior mobility on site. Aimed at the popular 30 and 45- tonne sectors, the HA30A and HA45A are built around a full-time six-wheel drive concept, with front and rear limited slip differentials and a longitudinal differential than can be manually locked, for maximum drive and traction on difficult terrain.
The trucks have a compact chassis design, to aid manoeuvrability, with a sloping rear frame and a front- mounted differential integrated into the ZF transmission, allowing for a shorter front frame section. This results in the
smallest turning radius in the sector and outstanding stability. Self-levelling hydro-gas suspension on the front axle further supports a comfortable ride, delivering maximum tractability in tough ground conditions.
The turning ring is mounted in front of the chassis articulation point, resulting in an equal weight distribution to the front wheels in all driving situations, for increased stability and traction. Having equal weight distribution allows the operator to use the limited slip differentials with just a 45° locking value, maintaining drive to both front wheels even when steering.
The two rear axles employ a tandem bogie drive design, with a single central differential and twin internal gear drives on each side of the truck. These tandem reduction gearboxes rotate in total by almost 40°, allowing maximum oscillation of the rear axles to maintain ground contact on rough terrain. The single central differential increases ground clearance beneath the truck.
The HA30A and HA45A are equipped with a full hydraulic retarder, combined with an electronic engine brake as standard. This supports the oil-cooled wet disc brakes to achieve an extended service lifetime of up to 15,000 hours. A hydraulically-activated mechanical parking brake holds the machine when stationary. The trucks are supplied with a gradient meter, with flip-over protection and a Body Over Centre of Gravity function, to assist drivers when tipping and operating on rough terrain.
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www.hub-4.com July-August 22 - Issue 75