Liebherr has extended its product offering with the T 274, a 305-metric-ton (mt)/ 336-ton haul truck, which bridges the gap between the T 284 (363 mt/400 tons) and the T 264 (240 mt/265 tons). According to Liebherr, the T 274 provides fast cycle times, high production rates, low fuel consumption and a low cost per ton. The T 274 follows the same base design as the T 284, benefitting from its decades of field experience. The company said operators and technicians can expect to experience first-class comfort and safety while driving and servicing this truck.
The T 274 is powered by a 3,650-hp engine using the Liebherr Litronic Plus AC Drive system. With the advanced hydraulic design and fast cycle times, the T 274 moves more material in less time. Speed on grade is a major contributor to fast cycle times. The Liebherr Litronic Plus AC Drive System improves cycle time efficiency by providing continuous uphill speed, differing from traditional mechanical drive trucks. Designed with safety in mind, the T 274 is equipped with 4,500 kW/6,035 hp dynamic braking power to operate efficiently on downhill hauls.
Liebherr suggested pairing the Liebherr T 274 with its R 9800 hydraulic excavator, which can load the truck in four passes. The T 274 is also compatible with the recently launched R 9600 excavator.
The ergonomic design of the T 274 cab creates a safe, comfortable and productive environment for operators. The cab provides maximum visibility utilizing tinted safety glass windows, and is certified for rollover and falling-object protection. The integrated HVAC system provides comfort in all extreme temperatures.
All Liebherr trucks offer at least two safety exit routes from the cab to the ground. Liebherr mining trucks are equipped with ladders and platforms that allow easy engine access. The ground level maintenance areas provide safe and efficient service access.
The T 274 is equipped with double A-arm suspension, which keeps optimal ground contact of the tire within the whole suspension stroke, reducing the tread and wear with optimized camber and toe angle, the company said. These deliver superior comfort, safety and handling for the T 274 operators improving the ride quality and reducing overall body vibration exposure.
Liebherr’s Trolley Assist System is available as an option on the T 274. Using an overhead pantograph to connect the electric-drive system to the electrical network, the Trolley Assist System can either increase truck fleet productivity or reduce the fleet size while maintaining yearly production, when compared with standard trucks. The main advantage is the significant reduction of diesel fuel consumption and truck fleet CO₂ emissions. Liebherr delivers proven field experience with 38 T 284 units fitted with the Trolley Assist System already in operation on two different sites.