Liebherr R 9250 - Manual (Page 5)

5 R 9250
Productivity
Litronic Plus - Electronic Control
A power management system
developed to optimize electrical,
mechanical, hydraulic power
distribution which encompasses:
• Liebherr designed and built
power components
• Continuous monitoring of the
engine and electrical system
• Safe, fast and precise control
• Optimum equipment operation
• Productivity and effi ciency
maximization
Liebherr Ground Engaging Tools (GET)
Liebherr has developed a complete mining
GET solution to complement Liebherr’s min-
ing backhoe and face shovel bucket design.
A synergy that enables easy material pen-
etration while extending the life of the bucket.
• Three tooth profi les and fi ve tooth sizes
• Innovative bucket lip and side wall
protection
• One single locking system that limits
tooling to one unique extraction tool
• Unique hammerless locking system
• Effortless and quick tooth removal
The R 9250 is built to outperform all competitors in the medium class mining market.
Boasting a 15,00 m³ / 19.6 yd³ bucket capacity in standard confi guration, the R 9250
is the ideal machine to load a fl eet of 100 t dump trucks. Available in both diesel or
electric versions, the R 9250 offers the fl exibility to perform many specifi c applications.
Engineered for Intense Mining
Powerful Drive System The R 9250 is equipped with a Cummins diesel
engine which has been specifi cally adapted to
withstand the most extreme environments and to
reach the highest uptime performance for maximum
productivity. The electric drive system provides
superior performance when the machine is used in
the most specifi c conditions.
Optimized Cycle Times Rather than using open hydraulic circuit, the R 9250
employs a closed-loop swing circuit to enable maxi-
mum swing torque while retaining the full oil fl ow for
the working circuit. The independent swing circuit in
combination with the powerful drive system leads to
fast arm motion, which contributes to faster cycle times.
Precise Machine
Motions The R 9250 design integrates the Litronic Plus electronic
control system to allow for easy control even when
simultaneous movements are required. The patented
Liebherr electronic damping system provides controlled
end-cushioning for smooth attachment motions.
High Digging and Lifting Capabilities
High Digging Forces Designed for the best mechanical force distribution,
the production-tailored attachment delivers high dig-
ging and lifting forces. Integrating Liebherr-made
cylinders and a wide range of buckets with mining-
optimized GET, the R 9250’s attachment ensures the
highest forces, easy bucket penetration and high fi ll
factor to perform even in the most demanding conditions.
Power-Oriented
Energy Management The R 9250’s attachment is equipped with the
pressureless boom down function to enable fast
cylinder retraction without the need for pump energy.
Intelligent energy management diverts the pump
fl ow during boom lowering, allowing other cylinder
motions to operate unimpeded.