Liebherr R 9250 User Manual
R 9250Mining Excavator
Operating Weight with Backhoe Attachment:
Operating Weight with Shovel Attachment:
Engine Output:
Bucket Capacity @ 1,8 t/m
Shovel Capacity @ 1,8 t/m
3
/ 3,000 lb/yd3: 15,00 m³ / 19.6 yd³
3
/ 3,000 lb/yd3: 15,00 m³ / 19.6 yd³
250.000 kg / 551,200 lb
253.500 kg / 558,900 lb
960 kW / 1,287 HP
R 9250
Operating Weight with Backhoe Attachment: 250.000 kg / 551,200 lb
Operating Weight with Shovel Attachment: 253.500 kg / 558,900 lb
Engine Output: 960 kW / 1,287 HP
3
Bucket Capacity @ 1,8 t/m
Shovel Capacity @ 1,8 t/m
/ 3,000 lb/yd3: 15,00 m³ / 19.6 yd³
3
/ 3,000 lb/yd3: 15,00 m³ / 19.6 yd³
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Productivity
Liebherr Mining Equipment enables superior productivity
by loading and hauling maximum tonnage in the shortest
amount of time.
Effi ciency
Liebherr combines the proven capabilities of previous
models with new features that improve operational
effi ciency.
Customer Support
Liebherr builds more than just mining equipment; Liebherr
also builds customer partnerships.
Safety
Mining demands an ever-vigilant focus on safety, and
Liebherr strictly adheres to industry standards. Liebherr
equipment is designed to diminish risk even under the
most extreme mining conditions.
Reliability
To maximize equipment reliability, Liebherr combines
manufacturing expertise with monitoring and diagnostic
capabilities.
Environment
Liebherr optimizes mining equipment for fuel economy,
emission compliance, and extended service intervals.
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Engine / Motor Options
Diesel engine available versions:
• Cummins QSK 38 (USA/EPA Tier 2)
• Cummins QSK 45 (USA/EPA Tier 1)
• Fuel consumption optimized version
on Tier 2 engine (option)
Electrical motor (option):
• 3 phase AC squirrel cage motor
• Voltage on request
• 50 or 60 Hz frequency
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Productivity
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 maximum 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
Power-Oriented
Energy Management
Designed for the best mechanical force distribution,
the production-tailored attachment delivers high digging and lifting forces. Integrating Liebherr-made
cylinders and a wide range of buckets with miningoptimized 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.
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.
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 mining backhoe and face shovel bucket design.
A synergy that enables easy material penetration 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
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Hydraulic System Effi ciency
The R 9250’s hydraulic system is designed
for an optimized hydraulic power management via the:
• Closed-loop swing circuit
• Pressureless boom down function
• Electronic hydraulic pumps management
• High pressure hydraulic oil fi ltration system
• Electro-hydraulic control system
• Optimized pipe and hose layout
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Effi ciency
The R 9250 follows the Liebherr design philosophy of maximizing the machines
performance by improving the effi ciency of all individual subsystems. Engineered
for optimum serviceability the machine is designed to ensure maximum uptime.
The R 9250’s spacious cab creates a comfortable working environment ensuring
peak operator performance, every shift.
Optimized for Maximum Profi tability
Electro-Hydraulic
System Effi ciency
Liebherr hydraulic technology in combination with
the precision of electronic control contributes to the
R 9250’s energy optimization. The high-pressure hydraulic system and the optimized pipe and hose layout
maximize usable power transmission. The hydraulic
pumps are electronically managed to provide optimal
pressure compensation and oil fl ow management.
The hydraulic system is independently regulated over
the engine circuit for the best operational effi ciency.
Cooling System
Effi ciency
The oversized independent oil- and water coolers
in combination with low energy consumption fans
and on-demand cooling controls enable to maximize
available power for digging process.
Optimized Service
Intervals
The R 9250’s high pressure hydraulic oil fi ltration
systems remove contaminants from the fl uid to offer the
highest rate of hydraulic system effi ciency. To maintain
the oil quality, all return hydraulic oil fl ow goes through
a 15/5 μm fi ne fi ltration system. To promote availability,
the grease and fuel tanks are sized to considerably
extend the time between service intervals.
Comfortable Cab for Effi cient Work
Superior Operator
Comfort
Working Environment
Total Control
The large and spacious cab which equips the
R 9250 offers ideal working conditions and optimal
operator’s comfort. Mounted on silent blocks,
the cab design reduces vibrations and limit noise
pollution to provide a quiet environment.
The R 9250’s cab offers a panoramic view over
the entire machine and loading spot. Two outside
cameras show areas that cannot be observed
directly. Long-distance halogen working lights
promote effi cient loading.
Fast Maintenance System
The service fl ap is hydraulically
actuated and accessible from
the ground level allowing for fast
maintenance:
• Hydraulic oil refi ll
• Engine oil refi ll and drainage
• Splitter box and swing gearbox
oil exchange
• Attachment/swing ring bearing
grease barrel refi lling with fi lters
• Windshield washer water refi lling
• Fast fuel refi lling line
Comfort-Oriented Cab Design
An array of features:
• Tinted laminated safety glass
• Armored front and attachment side windows
• Heavy duty sun louvers on windows
• Adjustable air suspended seat
• A/C with dust fi lter in fresh air / recirculated
• Pressurization to prevent dust penetration
• Trainer seat
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