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The Liebherr R 9250 stands as a formidable force in the realm of heavy mining equipment. Designed to tackle the most demanding excavation tasks, this machine has been a cornerstone in large-scale mining operations worldwide.
Impressive Specifications
- Engine Power: The R 9250 is equipped with a Cummins QSK45 engine, delivering 960 kW (1,287 hp) at 1,800 rpm. This 12-cylinder turbocharged V-engine ensures the excavator can handle the rigorous demands of mining environments.
- Operating Weight: With a backhoe attachment, the R 9250 weighs approximately 250,000 kg (551,150 lbs), while the face shovel configuration increases this to about 253,500 kg (558,870 lbs).
- Bucket Capacity: The excavator's bucket capacity ranges from 13.00 to 17.00 m³ (17.0 to 22.2 yd³), making it suitable for loading large mining trucks efficiently.
- Tear-Out Force: The R 9250 boasts a maximum tear-out force of 780 kN (175,351 lbf), facilitating the extraction of tough materials.
- Swing Torque: Its swing torque reaches up to 1,600 kNm, allowing for swift and powerful movements.
The R 9250 is designed with operator comfort and safety in mind. Its cab offers a panoramic view of the work area, tinted safety glass, and a fully air-conditioned environment. The operator seat is shock-absorbent with full lumbar support, ensuring comfort during long shifts.
Operational Efficiency
In real-world applications, the R 9250 has demonstrated exceptional productivity. For instance, at the Stockton Mine, the excavator's efficient design allowed for loading 70 to 90-ton dump trucks in just three passes, significantly reducing cycle times and increasing overall productivity.
Maintenance and Serviceability
Liebherr has prioritized ease of maintenance in the R 9250's design. The hydraulically operated service panel provides standing access to the drive components, simplifying tasks such as refilling lubricants and changing engine oil. This thoughtful design reduces downtime and maintenance costs.
Global Impact and Applications
The R 9250 has been deployed in various mining operations around the world. In Brazil, Liebherr delivered the first of three R 9250 excavators to J&F Mineração, highlighting the machine's global reach and versatility.
Advancements and Future Developments
Liebherr continues to innovate in the mining equipment sector. The R 9300, a successor to the R 9250, is set to enter serial production in 2024. This new model promises improved fuel efficiency, enhanced operator comfort, and a longer service life, building upon the solid foundation established by the R 9250.
Conclusion
The Liebherr R 9250 exemplifies the pinnacle of mining excavation technology. Its robust specifications, efficient design, and global applications make it a valuable asset in large-scale mining operations. As the industry evolves, machines like the R 9250 pave the way for more efficient and sustainable mining practices.
