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Wheel loaders 988K
Request a QuoteKey Information
Net Power
403 kW
Operating weight
51,062 kg
Bucket capacities
4.7 - 13.0 m³
Overview
Industry Leader - Optimal Manufacturing
CAT® large wheel loaders are designed to offer a long lifespan and ensure optimal availability over multiple lifecycles. Thanks to their optimized performance and simplified maintenance, our machines allow you to move more materials in a safer and more efficient manner, at a lower cost per ton. Introduced to the market in 1963, the 988 has been the industry benchmark for 50 years. Motivated by the satisfaction and success of our customers, we constantly strive to improve each new series. The 988K continues to meet our criteria for reliability, performance, safety, driver comfort, ease of maintenance, and efficiency.
AdvantagesUp to 41% Better Energy Efficiency
Using the Economy mode reduces fuel consumption while maintaining productivity
Up to 10% Lower Maintenance Cost
Grouped maintenance points to facilitate periodic maintenance
Up to 10% More Productivity.
Improved productivity in most dump truck loading applications with increased capacity Performance series buckets
Key Features
- Power and Efficiency
- Long-term profitability and long lifespan
- Proven reliability
- Performance and productivity
- Mastery and driving comfort
- Reduced maintenance and upkeep
- Top-notch service and assistance
Power and Efficiency
C18 Cat Engine The C18 Cat Engine has been designed and tested to meet your most demanding applications while complying with Tier 4 Final/Stage IV emission standards OR equivalent Tier 3/Stage IIIA OR equivalent Tier 2/Stage II standards. The fully integrated electronic engine controls work in conjunction with the entire machine for increased fuel efficiency. The engine idle shutdown function reduces fuel consumption at idle. The engine delayed shutdown function ensures longer lifespan. Cat Planetary Powershift Transmission The all-new transmission controls with Advanced Productivity Electronic Control Shifting (APECS) provide extra boost on slopes and save fuel by pulsing during gear shifts. Impeller Clutch Torque Converter (ICTC) This device allows drivers to optimize efficiency by varying the effort at the machine rim while increasing hydraulic power. Reduced tire wear. Full throttle gear shifts for shorter cycle times. Smooth approach to the dump area to limit spillage and ensure shorter cycle times. Cat Lock-Up Torque Converter Eliminates torque converter losses while reducing circuit temperature. Improves travel speeds. Reduces cycle times in loading and hauling applications. Economy Mode Ensures optimal productivity and efficiency throughout the day, every day. The advanced technologies of the 988K systems allow you to save fuel. With on-demand acceleration, the 988K automatically manages engine speed while the driver focuses on the left pedal and equipment control. Provides the driver with the same control and sensitivity as the traditional throttle lock function. Combines the efficiency of manual acceleration with the ergonomics of throttle lock. Reduces fuel consumption by nearly 20% compared to the 988H model.
Long-term profitability and long lifespan
Robust Structures Boost your results with ultra-resistant structures capable of performing multiple life cycles and supporting the most difficult loading conditions. The fully enclosed rear chassis resists both torsional forces and shocks. The extra-robust anchorages of the steering cylinders efficiently transmit the steering loads to the chassis. The axle assembly has been optimized for increased structural integrity. The lower articulation axis, frame plate, and bearing size have been increased for longer life. Handling Arms Excellent visibility on the bucket blades and work area thanks to the Z-linkage. Absorption of high-stress loads by solid steel handling arms. Increased resistance in key areas thanks to the use of monobloc castings. Long lifespan and increased intervals between repairs thanks to stress-free lifting arms. Front Linkage To ensure optimal lifespan and reliability, the linkage axis joints are designed with a factory-mounted automatic lubrication system.
Proven reliability
Integrated Steering and Transmission Control System (STIC™) Benefit from maximum responsiveness and control with the STIC system, which combines direction selection, gear selection, and steering into a single lever. A simple movement of the lever to the left or right allows for turning left or right, minimizing driver effort. Ultra-easy gear selection at the touch of a finger. Smoother, faster cycles and less fatigue for operators thanks to integrated controls that require minimal effort. Cat Planetary Powershift Transmission Your success relies on a superior transmission specifically designed for mining applications. Smooth and efficient gear shifting thanks to integrated electronic controls that use the Advanced Productivity Electronic Control Strategy (APECS). Longevity and reliability ensured by heat treatments and metallurgical processes on the gears. Four forward gears and three reverse gears to adapt to all your applications. Cat C18 Engine The exceptional lifespan and efficiency of your 988K Wheel Loader come from its Cat C18 Engine. Its 6 four-stroke cylinders naturally provide optimal performance. Optimized performance and quick engine response thanks to an electronic control module. Reliable efficiency with perfect control of timing, duration, and injection pressure thanks to the electronically controlled mechanically actuated unit injector system (MEUI™). Increased engine lifespan and improved energy efficiency thanks to lower rated speed. Compliant with Tier 4 Final/Stage IV emission standards OR equivalent to Tier 3/Stage IIIA OR equivalent to Tier 2/Stage II standards. Impeller Clutch Torque Converter (ICTC) and Rimpull Control System (RCS) Reduce your cost per ton by using advanced ICTC and RCS systems to control rim effort. Reduce tire slippage and wear by controlling rim effort from 100% to 25% using the left brake pedal. Once the position corresponding to a 25% reduction in rim effort is reached, the pedal is used for braking again. Decrease the risk of wheel slippage without reducing hydraulic efficiency thanks to RCS. Improve energy efficiency in certain applications with the lock-up torque converter allowing for direct drive.
Performance and productivity
Positive Flow Control Hydraulic Circuit Increase your efficiency with our positive flow control (PFC) hydraulic circuit. The PFC circuit features dual pumps and valves control. Optimizing the pump control allows for the hydraulic oil flow to be adjusted proportionally to the movement of the equipment lever. Fast and productive cycles are activated by the fully variable equipment pump. Improve bucket sensitivity and control through better hydraulic response. Consistent performance and efficiency with lower circuit heating. Flow distribution technology allows for maximum hydraulic flow up to 1400 rpm. Electro-Hydraulic Controls Increased equipment responsiveness allows operators to enhance their productivity. Work comfortably with electronically controlled hydraulic cylinder stops. Enjoy smooth and easy-to-use controls. Easily activate automatic equipment disengagement from inside the cabin. Steering Circuit Safe loader operation starts with precise machine control. That's why we equipped our 988K Wheel Loader with a load sensing hydraulic steering circuit. Increase your efficiency with our variable displacement pumps. Achieve precise positioning for easy loading in confined spaces with a 43-degree steering angle. Enhance driver comfort with integrated steering and transmission controls. Filtration System Benefit from improved performance and reliability of your hydraulic circuit with our advanced filtration system. Return screens to the reservoir. Hydraulic oil cooler return filter. Pilot filter. Return screens inside the hydraulic tank. Axle oil cooler screens according to equipment.
Mastery and driving comfort
More efficient and comfortable work for drivers thanks to a cabin inspired by our customers. Entry and Exit Easy access to the cabin thanks to its new ergonomic design. Foldable armrest/STIC steering. Reduced access ladder angles. Standard ladder lighting. Comfort Cat Series III Seat Improve driver comfort and reduce fatigue with the Comfort Cat Series III seat. Mid-height backrest and ultra-thick padded cushions. Air suspension system. Levers and seat controls within reach. Adjustable in 6 directions. Equipment control panel and STIC steering mounted on the seat and moving with it. 76 mm (3 in) wide retractable seat belt. Control Panel The ergonomic positioning of switches and information display provides drivers with better comfort throughout the day, every day. Large backlit membrane switches have LED activation indicators. Switches have ISO symbols for quick identification of functions. A two-position toggle switch activates the electrohydraulic parking brake. Driving Station Improve your drivers' productivity with the clean and comfortable environment of our cabins. Enjoy the low level of vibrations achieved through cabin mounts and seat pneumatic suspension. Maintain the desired temperature inside the cabin with automatic temperature controls. Pressurized cabin with filtered air. Low noise levels. Conveniently positioned storage tray/meal basket at ground level.
Reduced maintenance and upkeep
Because the very design of our 988k allows for reduced downtime, it will be the key to your success. Safe and convenient maintenance thanks to grouped maintenance points, accessible from the ground or the platform. Swinging doors located on both sides of the engine compartment facilitate access to daily maintenance checkpoints. Environmentally friendly drain valves facilitate maintenance and prevent the spillage of potentially hazardous contaminants. Reduce your downtime with notifications from our VIMS management system, allowing drivers and technicians to solve problems before they even occur. Ground-level access to transmission control valves.
Top-notch service and assistance
Legendary Cat Dealer Support A true partner, your Cat dealer is always there when needed. Preventive maintenance programs and guaranteed maintenance contracts. Unmatched availability of parts. Improve your efficiency through driver training. Remanufactured genuine Cat parts.
Contact Our Experts
Morocco
International
Monday to Friday 8am-5:30pm (UTC)
Product Specifications for 988K
- ENGINE
- Net Power403 kW
- Engine ModelC18 CAT®
- Bore145 mm
- Stroke183 mm
- Displacement18.1 l
- Torque Rise58 %
- Rated Speed1,700 RPM
- Maximum Torque - 1,200 RPM2852 Nm
- Net Power - SAE J1349403 kW
- Speed at Maximum Power1,500 RPM
- Speed at Maximum Power - 1,500 RPM - Gross - ISO 14396432 kW
- Gross Power - ISO 14396432 kW
- Maximum Power - 1,500 RPM - Gross - SAE J1995439 kW
- EmissionsEPA Tier 4 Final for U.S./Stage IIIA for the European Union OR equivalent to Tier 3/Stage IIIA OR equivalent to Tier 2/Stage II standards
- Speed at Maximum Power - 1,500 RPM - Net Power - SAE J1349403 kW
- OPERATING CHARACTERISTICS
- Operating Weight51062 kg
- Bucket Range Capacity4.7 to 13 m3 (6.2 to 17 yd3)
- Payload - Quarry Face11.3 t
- Compatible with Cat Truck - High Lift773-775
- Payload - Bulk Material14.5 t
- Compatible with Cat Truck - Standard770-772
- TRANSMISSION
- Transmission TypeCat Planetary Powershift
- Forward - 16.5 km/h
- Forward - 211.6 km/h
- Forward - 320.4 km/h
- Forward - 434.7 km/h
- Reverse - 17.5 km/h
- Reverse - 213.3 km/h
- Reverse - 323.2 km/h
- Direct Drive, Reverse - 214.3 km/h
- Direct Drive, Reverse - 325.5 km/h
- Direct Drive, Forward - 212.5 km/h
- Direct Drive, Reverse - 18 km/h
- Direct Drive, Forward - 1Lockout Disabled
- Direct Drive, Forward - 322.3 km/h
- Direct Drive, Forward - 439.3 km/h
- HYDRAULIC SYSTEM - LIFT/TILT
- Maximum Flow52 l/min
- Maximum Flow at 1,400 - 1,860 RPM580 l/min
- Lift/Tilt CircuitVariable Displacement Piston Pump
- Main Relief Valve Setting3800 kPa
- HYDRAULIC SYSTEM: LIFT/TILT
- Double-Acting Cylinders - Tilt, Bore and Stroke269 mm × 685 mm (8.7 in × 27 in)
- Lift/Tilt Relief Valve Setting32800 kPa
- Pilot CircuitVariable Displacement Piston Pump
- Double-Acting Cylinders - Lift, Bore and Stroke210 mm × 1050 mm (8.7 in × 41.3 in)
- Lift/Tilt Circuit: CircuitEH - Positive Flow Control, Flow Divider
- MAINTENANCE CAPACITIES
- Fuel Tank712 l
- Cooling System120 l
- Crankcase60 l
- Transmission120 l
- Hydraulic System - Reservoir Only240 l
- Differential - Final Drives - Rear186 l
- Factory Fill Hydraulic Tank475 l
- Differential - Final Drives - Front186 l
- CAPACITIES
- Diesel Exhaust Fluid Tank (for Tier 4 Final/Stage IV only)33 l
- Coolant (validated by testing cell for fill quantities)125 l
- Transmission (validated by testing cell for fill quantities)110 l
- BUCKETS
- Bucket Capacities4.7 to 13 m3 (6.2 to 17 yd3)
- AXLES
- FrontFixed
- RearOscillating Hitch
- Swing Angle13°
- BRAKES
- BrakesSAE J1473 OCT90, ISO 3450:1992
- HYDRAULIC SYSTEM: STEERING
- Steering Circuit: PumpVariable Displacement Piston
- Total Steering Angle86°
- Maximum Flow270 l/min
- Steering Relief Valve Setting30000 kPa
- Steering Cycle Time - High Idle3.4 s
- Steering Circuit: CircuitPilot, Load Sensing
- Steering Cycle Time - Low Idle5.6 s
- HYDRAULIC CYCLE TIME (1,400 -1,860 RPM)
- Total Hydraulic Cycle Time - Empty Bucket18.2 s
- Lower3.5 s
- Rack Back4.5 s
- Raise8 s
- Dump2.2 s
- SOUND LEVELS - TIER 4 FINAL/STAGE IV - STANDARD
- Sound Level in the Cab (ISO 6396)72 dB(A)
- Machine Sound Level (ISO 6395)111 dB(A)
- SOUND LEVELS - TIER 4 FINAL/STAGE IV: SOUND ATTENUATED
- Machine Sound Level (ISO 6395)109 dB(A)
- Sound Level in the Cab (ISO 6396)72 dB(A)
- SOUND LEVELS - EQUIVALENT TO TIER 2/STAGE II: SOUND ATTENUATED
- Sound Level in the Cab (ISO 6396)72 dB(A)
- Machine Sound Level (ISO 6395)110 dB(A)
- SOUND LEVELS - EQUIVALENT TO TIER 2/STAGE II - STANDARD
- Machine Sound Level (ISO 6395)112 dB(A)
- Sound Level in the Cab (ISO 6396)73 dB(A)
Standard Equipment for 988K
-
ELECTRICAL EQUIPMENT
- Reverse Warning
- 150 A Alternator, single
- Dry Batteries
- 10/15 A Converter, 24 V to 12 V
- Lighting System (Halogen, Spotlights, Access and Maintenance Platform Lighting)
- 24 V Starting and Charging Circuit
- Emergency Starting Receptacle
- Starter Lock in Bumper
- Transmission Lock in Bumper
-
DRIVER'S COMPARTMENT
- Real-time Graphical Display of Operating Information, Calibration, and Customization for Each Operator
- Air Conditioner
- Cat Detect Vision Module, Rear Camera System
- Pressurized and Soundproofed Cabin, Integrated Rollover Protective Structure (ROPS/FOPS), Radio Ready (Background Radio) with Antenna, Speakers, Converter (12 V/5 A), and Power Outlet
- Lift and Tilt Controls
- Heater, Defroster
- Electric Horn
- Instruments, Indicators: - Coolant Temperature - Maintenance Meter - Hydraulic Oil Temperature - Powertrain Oil Temperature
- Cabin Lighting, Ceiling Light
- Lunchbox Holder and Cup Holder
- Exterior Rearview Mirrors
- Rim Pull Control System
- Comfort Cat Seat (Fabric), Air Suspension, 6-way Adjustable
- Seat Belt Reminder
- 76 mm (3 in) Retractable Seat Belt
- STIC Control System
- UV Windshield
- Transmission Gear Indicator
- Vital Information Management System (VIMS) with Graphical Display: External Data Port, Customizable Operator Profiles, Cycle Timer, Integrated Payload Weighing System
- Integrated Wiper/Washer (Front and Rear): - Intermittent Front and Rear Wipers
- Turn Signals
-
POWERTRAIN
- Oil-Cooled Multi-Disc Brakes for Service and Secondary Brake Functions
- Sump Return Screens
- Sump Guard
- Electrohydraulic Parking Brake
- C18 MEUI Diesel Engine with Turbocharger/Air-to-Air Aftercooler
- Ground-Level Engine Shutdown
- Centrifuge Prefilter, Engine Air Inlet
- Aluminum Modular Radiator (AMR)
- Aether Starting Aid
- Electronic Throttle Lock
- Impeller Clutch Torque Converter (ICTC) with Lock Up Clutch (LUC) and Rim Pull Control System
- 4-Speed Electronic-Controlled Powershift Transmission with 3-Speed Reverse
- Manual Fuel Priming and Auto Fuel Bleed
- CAT® Production Measurement Ready
-
OTHER
- Automatic Bucket Tilt and Lift Kickouts
- Rims are Always Included with the Machine
- Hydraulic Fan with Variable Speed
- Cat Axial O-Ring Seals
- Lockable Doors for Maintenance Access
- Eco Drains for Engine, Radiator, and Hydraulic Tank Fluids
- Fuel Tank, 731 l (188 US gal)
- Towing Hitch with Drawbar
- Cat XT™ Hoses
- Hydraulic, Steering, and Brake Fluid Filtration System
- Cat Emissions Module
- Oil Sampling Ports
- 50% Concentrated Long-Life Pre-Mixed Coolant, -34°C (-29°F) Freeze Protection
- Rear Access to Cabin and Maintenance Platform
- Load Sensing Steering
- Throttle Kickdown
- Anti-Vandalism Locks
Available Options for 988K
-
POWERTRAIN
- Antifreeze -50°C (-58°F)
- High-Speed Engine Oil Drain System, Wiggins
- Engine Block Heater (120V or 240V)
- High Ambient Temperature Cooling, Software
- Cat Production Measurement
-
DRIVER'S COMPARTMENT
- Cabin Pre-filter
- AM/FM/CD/MP3 Radio
- Sirius Satellite Radio with Bluetooth Interface
- Warning Strobe Light
- CB Radio Ready
- Retractable Sun Visor
- Handrail-Mounted Mirrors
-
MISCELLANEOUS EQUIPMENT
- Front and Rear Road Travel Fenders
- Quick Fuel Fill System (Shaw-Aero)
- Cold Weather Starting (Additional Starter plus Two Batteries)
- Aggregate Handling Bucket
Media Gallery
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