Liebherr A 920 Litronic Wheeled Excavator
Generation 6
Key Specifications
- Operating Weight: 20,700 kg
- Engine: 129 kW / 175 HP, Stage IIIA (compliant), Tier 3
- Bucket Capacity: 0.55 - 1.20 m³
Performance
Robustly Stable Power, Strength and Precision
Liebherr wheeled excavators are designed for maximum productivity. Large grab capacity, high payloads, and rapid working cycles satisfy all requirements for efficient site operations. A wide range of attachment versions enhances excavator use.
Maximum Performance
Versatile & Powerful: The A 920 is developed to be productive and efficient in all applications, including road, sewer, and pipeline construction, as well as classic earthmoving operations. Its excellent weight distribution with compact dimensions combines versatility, outstanding stability, and high capacity.
Working Faster: Years of experience in development and production allow Liebherr to harmonize components perfectly, resulting in rapid, fluid movements combined with high precision. Machine speed and precision can be adjusted using the MODE switch to suit tasks and save fuel.
Working with Precision: Liebherr joysticks enable intuitive and sensitive control of the hydraulic system. The slim, ergonomically designed proportional sensors offer additional functionality. Typical functions include high and medium pressure movements for tools and lowering the machine outrigger. Configurable buttons on the joysticks add convenience.
Features:
- Constant Power: Powerful and robust construction machinery motor for continuous use at full load; 4.5-liter displacement with high torque for fuel-efficient operation at low engine speeds; turbo loader with intercooling for high output at low fuel consumption; specially developed for construction machinery.
- Digging Force: High digging and breakout force; continuously high digging performance even in tough ground; more digging force for faster results.
- Travel Drive: High traction for fast acceleration and powerful engine permit top speed on hills; reduces unproductive travel time; faster on-site operations.
Economy
A Sound Investment – Optimum Economy and Environmentally Friendly
Liebherr wheeled excavators combine high productivity with excellent economy as standard. Efficiency can be further boosted with Liebherr productive buckets, fuel-saving hydraulic oil, or quick coupling systems for more return per operating hour.
Maximum Efficiency
Powerful Construction Machinery Engine: The A 920 features a robust, modern four-cylinder engine that is powerful, fuel-efficient, and reliable, delivering high torque at low speeds. Intensive long-term tests prove component resilience and quality, ensuring reliability throughout the machine's service life.
Engine Idling: The standard automatic idling function reduces engine speed to idle when the operator's hand is removed from the joystick, saving fuel and reducing noise. Proximity sensors restore the original engine speed when the hand is moved back.
Features:
- ECO Mode: Cost-effective and green working practices; fuel consumption reduction up to 20%; 80% of jobs possible without performance loss.
- Low Fuel Consumption Thanks to Intelligent Machine Control: Liebherr-Power Efficiency (LPE) optimizes drive component interaction for efficiency, enabling operation in the area of lowest specific fuel use.
- Smart Cooling System: Needs-based cooling via thermostatic control; fuel-efficient; accelerated warm-up; guaranteed uniform oil quality; extended drive component service life.
Increased Productivity
Liebherr Quick Coupling Systems: Enable quick and safe swapping between various working tools, significantly reducing time and operating costs while improving versatility.
Automatic Digging Brake and Swing Axle Lock: The automatic digging brake engages when the machine is stationary, eliminating the need for manual brake pedal actuation and speeding up work processes. It can be linked with the automatic swing axle lock for optimum stability when deployed.
Reliability
Competence, Consistency, Innovation – Proven Experience
Reliability offers safety, significantly influencing project success. Liebherr stands for safety with reliable construction machines and customer-oriented service partners, making a Liebherr machine a worthwhile investment.
High Machine Availability
Quality and Competence: Product experience, technical design understanding, and customer feedback form the basis for pioneering ideas. Liebherr's extensive production depth and system solutions ensure high-quality, perfectly coordinated components.
Robust Design: All steel components are designed by Liebherr and manufactured from high-strength steel to withstand harsh requirements, ensuring high torsion resistance and excellent force absorption for a long service life.
Greater Safety
Safety: Focus on personnel and machine safety includes pipe fracture safety devices, load holding valves, overload warning device, Roll-Over Protective Structure (ROPS), and an emergency exit through the rear window for maximum safety.
Maximum Stability: A robust undercarriage with securely welded outriggers provides safe footing, maximum stability, and a long service life. Stabilizer blades and outriggers are designed for tough scenarios.
Features:
- QPDM - Quality and Process Data Management: Allows production data logging, documentation, and evaluation; automates specifications; handles large quantities with uniform quality.
- Excellent All-round Visibility: Rear-view camera and optional lateral monitoring provide optimal views. Optional working lights improve illumination in poor light, enhancing safety.
- Mitas EM 22 Twin Tyres: Specially developed twin tires for increased stability and long service life with high traction.
Comfort
Ergonomic Excellence – Superior Cabin Design for Operator Comfort and Wellbeing
The Liebherr excavator cab offers generous dimensions and an ergonomic design. The operator's seat is individually adjustable, the control panel is clear and helpful, and all-round visibility is perfect. Automatic air-conditioning ensures the right temperature in the "Liebherr feel-good cab".
First-class Cab
Productive Working Environment: The spacious cab provides ample room and excellent all-round visibility. Gear levers and control panels are ergonomically placed. Temperature, fan settings, and air vents are adjustable via touchscreen control.
Operator Seats: Standard and Comfort versions offer maximum comfort with high-quality materials, pneumatic suspension, seat heating, headrest, lumbar support, and more.
Smooth Operation: Visco-elastic mounts, good noise insulation, and modern Liebherr diesel engines minimize noise emissions and vibrations.
Comfortable Operation
Radio with Hands-free Device: Optional MP3-compatible radio with USB and Bluetooth connectivity for hands-free phone calls and media control via touchscreen.
Control Unit: A large touchscreen provides a fast, uncomplicated interface with all necessary information. An intuitive menu system ensures ease of use.
Features:
- Refuelling: Optional refuelling pump for direct refueling; integral tank hose with automatic shut-off for comfort and speed.
- Sliding Two-piece Windscreen: Allows unrestricted view, with a simple mechanism for rapid opening and can be split in two.
- Intuitive Operation: 7-inch touchscreen displays machine data and camera images. 20 programmable memory slots for working tools allow quick setting of oil pressure and flow.
Maintainability
Service Every Step of the Way – Simple, Fast and Reliable
Liebherr compact wheeled excavators feature a service-oriented design for quick, simple, and safe maintenance, reducing costs and minimizing downtime.
Simplified Maintenance Concept
Service-based Machine Design: Guarantees short servicing times and minimized costs. Maintenance points are easily accessible from the ground through large, wide-opening service doors.
CAN Bus System: Collects and transfers operating data for machine monitoring and diagnostics, allowing operators to check machine status and ensure reliability.
Your Competent Service Partner
Strong Partner – Strong Service: Liebherr facilities and service partners worldwide provide competent, reliable, and efficient support anytime, anywhere. Quick response times reduce downtime and restore productivity swiftly.
Competent Advice and Service: Experienced specialists offer application-oriented sales support, service agreements, cost-effective repair alternatives, and original parts management.
Features:
- Reliable Lubrication: Accessible lubrication points grouped on a strip reduce maintenance time.
- Excellent Service Access: Large service doors provide easy access to engine oil, fuel, air, and cab air filters. Hydraulic tank oil level is checked from the cab.
- Rapid Spare Parts Service: 24/7 spare parts service available; electronic parts catalogue for fast selection and ordering via the Liebherr online portal; online tracking of order status.
Overview
Excellent Machine Concept for Maximum Reliability
- Robust design made of high-strength steel
- Solid, welded outriggers
- Load holding valves on all outriggers
- Liebherr hydraulic cylinders with standard pipe fracture safety devices
- Overload warning device
- Roll-over protection system (ROPS)
- Twin tyres
Superior Technology for Highest Economy
- Powerful and robust construction machinery motor for continuous use at full load
- Liebherr-Power-Efficiency (LPE) – Liebherr's smart engine controller
- Load-sensing-control
- Sensor-controlled automatic idling system
Simplified Maintenance Concept for Maximum Productivity
- Service-enhanced machine structure with easy access to maintenance points
- Grouped lubrication points on a strip for simple manual lubrication
- Liebherr Hydraulic Plus – oil with an extended service life of up to 8,000 operating hours
- Highly qualified, experienced trained personnel provide competent care
Ergonomic Operator's Work Station for Maximum Comfort
- High-quality operator's seats in a range of versions
- Control console connected to the seat and ergonomic joysticks
- Folding control console, left
- Proportional control with 4-way mini-joystick
- Automatic air-conditioning system
- Control Unit – 7" large colour touchscreen
- Rear and side monitor
- Convenient radio control with hands-free kit
- Tool Control for working tools (optional)
- LED headlights (optional)
- Large windows
- Sliding two-piece windscreen
Perfect Combination for Highest Possible Performance
- Powerful 4-cylinder in-line engine with Common-Rail injection system
- Liebherr hydraulic system for high digging and breakout forces with combined, fluid movements
- Flexible configuration of the machine with various attachment and tool versions and options
Technical Data
Diesel Engine
| Rating per ISO 9249 | 129 kW (175 HP) at 1,800 RPM |
|---|---|
| Model | Cummins QSB 4.5 |
| Type | 4 cylinder in-line |
| Bore/Stroke | 107/124 mm |
| Displacement | 4.5 l |
| Engine operation | 4-stroke diesel, Common-Rail, turbo-charged and after-cooled, reduced emissions |
| Air cleaner | dry-type air cleaner with pre-cleaner, primary and safety elements |
| Engine idling | sensor controlled |
| Electrical system | 24 V |
| Batteries | 2 x 135 Ah/12 V |
| Alternator | three-phase current 28 V/90 A |
| Stage IIIA (compliant) | in accordance with ECE-R.96 Power Band I |
| Harmful emissions values Tier 3 | in accordance with EPA/CARB-40CFR stage Tier 3 |
| Fuel tank | 369 l |
Cooling System
| Diesel engine | water-cooled; compact cooling system consisting cooling unit for water, hydraulic oil and charge air with stepless thermostatically controlled fan; fans for radiator cleaning can be completely folded away |
|---|
Hydraulic System
| Hydraulic pump for equipment and travel drive | Liebherr axial piston variable displacement pump |
|---|---|
| Max. flow | 390 l/min. |
| Max. pressure | 350 bar |
| Hydraulic pump regulation and control | Liebherr-Synchron-Comfort-system (LSC) with electronic engine speed sensing regulation, pressure and flow compensation, torque controlled swing drive priority |
| Hydraulic tank | 155 l |
| Hydraulic system | max. 350 l |
| Hydraulic oil filter | 1 main return filter with integrated partial micro filtration (5 µm) |
| MODE selection | Adjustment of engine and hydraulic performance via a mode pre-selector to match application, e.g. for especially economical and environmentally friendly operation or for maximum digging performance and heavy-duty jobs |
| S (Sensitive) | Mode for precision work and lifting through very sensitive movements |
| E (Eco) | Mode for especially economical and environmentally friendly operation |
| P (Power) | Mode for high performance with low fuel consumption |
| P+ (Power-Plus) | Mode for highest performance and for very heavy duty applications, suitable for continuous operation |
| Engine speed and performance setting Option | Stepless alignment of engine output and hydraulic power via engine speed; Tool Control: 20 preadjustable pump flows and pressures for add-on attachments |
Hydraulic Controls
| Power distribution | via control valves with integrated safety valves, simultaneous and independent actuation of chassis, swing drive and equipment |
|---|---|
| Servo circuit | with hydraulic pilot control and proportional joystick levers |
| Equipment and swing | electroproportional via foot pedal |
| Chassis | via switch or electroproportional foot pedals |
| Additional functions Proportional control | proportionally acting transmitters on the joysticks for additional hydraulic functions |
Swing Drive
| Drive | Liebherr axial piston motor with integrated brake valve and torque control, Liebherr planetary reduction gear |
|---|---|
| Swing ring | Liebherr, sealed race ball bearing swing ring, internal teeth |
| Swing speed | 0 – 10.0 RPM stepless |
| Swing torque | 54 kNm |
| Holding brake | wet multi-disc (spring applied, pressure released) |
| Option | pedal controlled positioning swing brake |
Operator's Cab
Cab
| ROPS safety cab structure | (roll-over protection system) with individual windscreens or featuring a slide-in subpart under the ceiling, work headlights integrated in the ceiling, a door with a sliding window (can be opened on both sides), large stowing and depositing possibilities, shock-absorbing suspension, sounddamping insulating, tinted laminated safety glass, separate window shades for the sunroof window and windscreen |
|---|---|
| Operator's seat Standard | Air cushioned operator's seat with 3D-adjustable armrests, headrest, lap belt, seat heater, manual weight adjustment, adjustable seat cushion inclination and length, and mechanical lumbar vertebrae support |
| Operator's seat Comfort (Option) | In addition to operator's seat standard: lockable horizontal suspension, automatic weight adjustment, adjustable suspension stiffness, pneumatic lumbar vertebrae support, and passive seat climatisation with active coal |
| Control system | Joysticks with control consoles and swivel seat, folding left control console |
| Operation and displays | Large high-resolution operating unit, self-explanatory, colour display with touchscreen, video-compatible, numerous setting, control and monitoring options (e.g., air conditioning control, fuel consumption, machine and attachment parameters) |
| Air-conditioning | Automatic air-conditioning, recirculated air function, fast de-icing and demisting at the press of a button; air vents can be operated via a menu; recirculated air and fresh air filters can be easily replaced and are accessible from the outside; heating-cooling unit designed for extreme outside temperatures, sensors for solar radiation, inside and outside temperatures (country-dependent) |
Undercarriage
| Drive | Oversized two-speed power shift transmission with additional creeper speed, Liebherr axial piston motor with functional brake valve on both sides |
|---|---|
| Pulling force | 127 kN |
| Travel speed | 0 – 3.5 km/h stepless (creeper speed off-road); 0 – 7.0 km/h stepless (off-road); 0 – 13.0 km/h stepless (creeper speed on-road); 0 – 37.0 km/h stepless (road travel) |
| Driving operation | Automotive driving using accelerator pedal, cruise control function: storage of variable accelerator pedal positions, both off-road and on-road |
| Axles | Manual or automatic hydraulically controlled front axle oscillation lock |
| Service brake | Two-circuit travel brake system with accumulator; wet and backlash-free disc brake |
| Automatic digging brake | Works automatically when driving off (accelerator pedal actuation) and when the machine is stationary (engagement); the digging brake engages automatically – can be coupled with automatic swing axle lock |
| Holding brake | Wet multi-disc (spring applied, pressure released) |
| Stabilization | Rear outriggers + front stabilizer blade (stabilizer blade adjustable during travel) |
Equipment
| Type | High-strength steel plates at highly stressed points for the toughest requirements. Complex and stable mountings of equipment and cylinders. |
|---|---|
| Hydraulic Cylinders | Liebherr cylinders with special seal system as well as shock absorption |
| Bearings | Sealed, low maintenance |
Complete Machine
| Lubrication | Standard: decentralised lubrication strip on the mono boom and single lubrication points on the stick; Optional: Liebherr central lubrication system for uppercarriage and equipment, automatically |
|---|---|
| Noise emission ISO 6396 2000/14/EC | LpA (inside cab) = 71 dB(A); LwA (surround noise) = 101 dB(A) |
Dimensions
A diagram shows various dimensions labeled A through U5, with a key provided below.
| Dimension | mm | Stick Mono boom 5.60 m | Rear outriggers + front blade | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| A | 2,525 | m | ||||||||||
| B | 2,550 | V | 2.45 | 6,500 | ||||||||
| B1 | 3,695 | 2.65 | 6,650* | |||||||||
| B2 | 2,550 | 3.05 | 6,200* | |||||||||
| C | 3,150 | W | 2.45 | 3,300 | ||||||||
| D | 2,710 | 2.65 | 3,300* | |||||||||
| E | 2,710 | 3.05 | 3,350* | |||||||||
| H | 2,575 | X | 2.45 | 9,350 | ||||||||
| I5 | 455 | 2.65 | 9,700* | |||||||||
| J5 | 590 | 3.05 | 9,700* | |||||||||
| K | 1,220 | |||||||||||
| L | 2,750 | |||||||||||
| M | 1,250 | |||||||||||
| M1 | 1,500 | |||||||||||
| Q | 345 | |||||||||||
| T1 | 1,040 | |||||||||||
| T5 | 1,560 | |||||||||||
| U5 | 5,500 | |||||||||||
| E = Tail radius | ||||||||||||
| Tyres 10.00-20 |
Dimensions are with equipment over steering axle. * Equipment over digging axle for shorter transport dimensions. W = Max. ground clearance including approx. 150 mm piping.
Backhoe Bucket with Mono Boom 5.60 m
This section provides diagrams and tables related to digging envelopes, digging forces, operating weight, and bucket machine stability.
Digging Envelope
| 1 | 2 | 3 | |
|---|---|---|---|
| Stick length (m) | 2.45 | 2.65 | 3.05 |
| Max. digging depth (m) | 5.75 | 5.95 | 6.35 |
| Max. reach at ground level (m) | 9.35 | 9.55 | 9.75 |
| Max. dumping height (m) | 7.15 | 7.30 | 7.10 |
| Max. teeth height (m) | 9.85 | 9.95 | 9.65 |
| Min. equipment radius (m) | 3.33 | 3.35 | 3.41 |
Digging Forces
| 1 | 2 | 3 | |
|---|---|---|---|
| Max. digging force (ISO 6015) (kN) | 98.4 | 92.9 | 83.6 |
| Max. digging force (ISO 6015) (t) | 10.0 | 9.5 | 8.5 |
| Max. breakout force (ISO 6015) (kN) | 135.9 | 135.9 | 135.9 |
| Max. breakout force (ISO 6015) (t) | 13.8 | 13.8 | 13.8 |
| Max. breakout force with ripper bucket (kN) | 160.5 | ||
| Max. breakout force with ripper bucket (t) | (16.4) |
Operating Weight
The operating weight includes the basic machine with 8 tyres plus intermediate rings, mono boom 5.60 m, stick 2.65 m and bucket 1,250 mm/1.00 m³.
| Undercarriage versions | A 920 Litronic with rear outriggers + front blade | Weight (kg) | 20,700 |
|---|
Buckets Machine stability per ISO 10567* (75% of tipping capacity)
Tables detailing machine stability for Ditch Cleaning Buckets and Tilt Buckets across various cutting widths, capacities, weights, stick lengths, and stabilizer configurations (raised/down).
Lift Capacities
Lift capacity charts are provided for the Backhoe Bucket with Mono Boom 5.60 m, detailing capacities based on stick length, undercarriage configuration (stabilized, outriggers/blade), and reach/height combinations. These charts indicate capacities in metric tons (t) and are valid on a firm, level supporting surface with blocked oscillating axle. Capacities are limited by machine stability and hydraulic capacity.
Equipments
Ditch Cleaning Buckets/Tilt Buckets
Machine stability tables for Ditch Cleaning Buckets and Tilt Buckets are presented, showing capacity, weight, and stability ratings across different configurations.
Equipment Details
Undercarriage
- Dual-circuit braking system
- Digging brake, automatic
- Cab access, rear
- Tyres (twin tyres) Mitas EM 22 10.00-20 PR 16 (MH3)
- Individual control outriggers
- Travel speed levels (four)
- Load holding valve on each stabilization cylinder
- Powershift transmission, semiautomatic
- Parking brake, maintenance-free
- Rear outriggers + front stabilizer blade
- Protection for piston rods, stabilizer cylinder
- Protection for piston rods, outriggers
- Speeder 37 km/h*
- Storage compartment left – lockable
- Storage compartment right – lockable
- Lashing eyelets for transport
- Tool equipment, extended
Uppercarriage
- Uppercarriage right side light, 1 piece, LED
- Uppercarriage rear light, 2 pieces, LED
- Refuelling system with filling pump
- Main battery switch for electrical system
- Engine hood with gas spring
- Amber beacon, at uppercarriage, LED double flash
- Service doors, lockable
Hydraulic System
- Shut-off valve between hydraulic tank and pump(s)
- Pressure test fittings
- Accumulator for controlled lowering of the equipment with the engine shut down
- Hydraulic oil filter with integrated microfilter
- Liebherr hydraulic oil from -20 °C to +40 °C
- Liebherr hydraulic oil, specially for warm or cold regions
- Magnetic rod in hydraulic tank
- Bypass filter
- Switchover high pressure circuit and tipping cylinder
Diesel Engine
- Reversible fan drive, fully automatic
- Air pre-filter with dust discharge
- Preheating fuel
Operator's Cab
- Storage compartment
- Stabilizer, proportional control on left joystick
- Cab lights rear, LED
- Cab lights front, halogen (under rain cover)
- Cab lights front, LED (above rain cover)
- Cab lights front, LED (under rain cover)
- Mechanical hour meters, readable from outside the cab
- Slewing gear brake Comfort, button on the left or right joystick
- Operator's seat Standard
- Operator's seat Comfort
- Driving alarm (acoustic signal is emitted during travel, can be switched ON/OFF)
- Windscreen retractable (including upper part)
- Intermittent windscreen wiper with wiper washer
- Cruise control
- Rubber floor mat, removable
- Dome light
- Interior mirror
- Licence plate holder with light
- Coat hook
- Automatic air conditioning
- Fuel consumption indicator
- Steering column adjustable horizontally
- LiDAT, vehicle fleet management*
- Emergency exit rear window
- Positioning swing brake
- Proportional control
- Radio Comfort, control via display with handsfree set
- Preparation for radio installation
- Rain cover over front window opening
- ROPS cab protection
- Amber beacon, on cabin, LED double flash
- All tinted windows
- Windshield wiper, entire windscreen
- Door with sliding window
- Top guard
- Front guard, adjustable
- Right side window and windshield made from laminated safety glass
- Sun blind
- Auxiliary heating, adjustable (week time switch)
- Left control console, folding
- Electronic immobilizer
- Cigarette lighter
Complete Machine
- Cold weather package
- Lubrication uppercarriage and equipment, manually – decentralised (grease points)
- Lubrication undercarriage, manually – decentralised (grease points)
- Central lubrication system for uppercarriage and equipment, automatically (without quick coupler and connecting link)*
- Rear view monitoring with camera
- Side view monitoring with camera
Equipment (Continued)
- Boom lights, 2 pieces, halogen
- Boom lights, 2 pieces, LED
- High pressure circuit incl. unpressurised return line and Tool Control
- Security for hoist cylinder for hydraulic attachments
- Leak oil line, additional for attachments
- Liebherr ditch cleaning bucket
- Liebherr quick coupler, hydraulic or mechanical
- Liebherr tilt bucket
- Liebherr tilt rotator
- Liebherr sorting grab
- Liebherr backhoe bucket
- Liebherr tooth system
- Liebherr clamshell grab
- Medium pressure circuit incl. lines
- Mono boom
- Pipe fracture safety valves hoist cylinders
- Pipe fracture safety valve stick cylinder
- Return line, pressureless (in high pressure circuit option included)
- Hose quick coupling at end of stick
- Protection for bottom side of stick
- Tool Control, 20 attachment adjustments selectable over the display
- Overload warning device
