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Wheel loaders 990K (steel mill version)
Request a QuoteKey Information
Net Power
521 kW
Operating weight
92,848 kg
Bucket capacities
8.6 - 9.2 m³
Overview
Built to Withstand the Toughest Conditions
Cat large wheel loaders are designed to provide maximum longevity and ensure optimal availability over multiple lifecycles. With 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. The Cat 990 Wheel Loader has proven itself in metallurgy and its applications, where larger machines are typically used. The 990K Wheel Loader redefines the levels of performance, safety, driver comfort, and efficiency required for pit digging and slag handling applications.
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

C27 CAT® Engine The Cat C27 Engine is designed and tested to meet your most demanding applications while complying with Tier 4 Final emissions standards or equivalent Tier 2 standards. The fully integrated electronic engine controls work in conjunction with the entire machine for increased fuel efficiency. The engine idle shutdown feature reduces fuel consumption at idle. The delayed engine shutdown feature ensures longer life. Cat Planetary Powershift Transmission Optimize your productive time with the proven Cat Planetary Powershift transmission. Gear changes, component life, and driving comfort are optimized through our electronic transmission controls. Modulation Clutch Torque Converter (ictc, Impeller Clutch Torque Converter) This device allows operators to optimize efficiency by varying the effort at the machine rim while increasing hydraulic power. Reduced tire wear. Full throttle shifting 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 990K systems allow you to save fuel. With on-demand acceleration, the 990K automatically manages engine speed while the operator focuses on the left pedal and equipment control. Provides the operator with the same control and sensitivity as the traditional throttle lock function. Combines the efficiency of manual throttle control with the ergonomics of throttle lock.
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. 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 axis joints of the linkage 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 and faster cycles reduce driver fatigue 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. Longevity and reliability ensured by heat treatments and metallurgical processes on the gears. Three forward gears and three reverse gears to adapt to all your applications. Cat C27 Engine The exceptional lifespan and efficiency of your 990K come from its Cat C27 Engine. Its 12 cylinders with direct injection 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. Available in two versions: one compliant with Tier 4 Final emissions standards and another compliant with emissions standards equivalent to Tier 2. 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. Maximum hydraulic flow at a reduced engine speed of 1,600 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 the 990K Wheel Loader with a load sensing steering circuit. Increase your efficiency with our variable displacement pumps. Achieve precise positioning for easy loading in tight workspaces with a 35-degree steering angle. Enhance operator 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 tank. 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 function identification. A two-position toggle switch activates the electrohydraulic parking brake. Switches control transmission neutralization. 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. Reduced noise level at 69 dB(A). Conveniently positioned storage tray/lunch basket at ground level.
Reduced maintenance and upkeep

Because the very design of the 990k model allows for reduced immobilization, 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 spills. Reduce your immobilization with notifications from our VIMS management system that allow 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 990K (steel mill version)
- ENGINE
- Net Power521 kW
- Engine ModelC27 CAT®
- Bore137.2 mm
- Stroke152.4 mm
- Displacement27.03 l
- Torque Rise18%
- Rated Speed - Gross - ISO 14396561 kW
- Rated Speed - Net Power - SAE J1349 - High Ambient483 kW
- Rated Speed1800 rpm
- Rated Speed - Net Power - SAE J1349 - Standard Ambient521 kW
- EmissionsMeets Tier 4 Final EPA standards for the United States, equivalent to Tier 2 standards
- Maximum Torque - 1200 rpm3557 Nm
- Gross Power - ISO 14396561 kW
- Net Power - SAE J1349521 kW
- Rated Speed - Gross - SAE J1995571 kW
- OPERATING CHARACTERISTICS
- Operating Weight92848 kg
- Nominal Payload15.88 t
- Bucket Capacity Range8.6 m3 - 9.2 m3 (11.25 yd3 - 12.0 yd3)
- Nominal Payload - Standard15.88 t
- Compatible with Cat Truck - Standard773-775
- TRANSMISSION
- Transmission TypeCat Planetary Powershift Transmission
- Forward Speed - 17.3 km/h
- Forward Speed - 213.3 km/h
- Forward Speed - 322.9 km/h
- Reverse Speed - 17.9 km/h
- Reverse Speed - 214.7 km/h
- Reverse Speed - 324.9 km/h
- Direct Drive, Reverse 18.7 km/h
- Direct Drive, Reverse 215.4 km/h
- Direct Drive, Forward 213.7 km/h
- Direct Drive, Reverse 326.4 km/h
- Direct Drive, Forward 324.5 km/h
- Direct Drive, Forward 1Lockout Disabled
- NoteTravel speeds with Michelin 45/65R39 LD D2 ** L5 tires.
- HYDRAULIC SYSTEM: LIFT/ TILT
- Relief Valve Setting - Lift/Tilt33000 kPa
- Double-Acting Cylinders - Tilt, Bore and Stroke317.5 mm × 819 mm (12.5 in × 32.2 in)
- Lift/Tilt CircuitPositive Flow Control
- Pilot CircuitOpen Loop and Pressure Reducing
- Double-Acting Cylinders - Lift, Bore and Stroke254 mm × 1264 mm (10.0 in × 49.8 in)
- HYDRAULIC SYSTEM - LIFT/TILT
- Lift/Tilt CircuitVariable Displacement Piston Pump
- Maximum Flow at 1800 rpm (1)84 l/min
- Relief Valve Setting - Main3500 kPa
- Maximum Flow at 1800 rpm (2)817 l/min
- MAINTENANCE CAPACITIES
- Fuel Tank1114 l
- Cooling System208 l
- Transmission110 l
- Differential - Final Drives - Rear261 l
- Differential - Final Drives - Front271 l
- Engine Crankcase75.7 l
- Factory Fill Hydraulic Tank795 l
- CAPACITIES
- Hydraulic Tank - Steering and Brake132 l
- Hydraulic Tank - Implement and Fan261 l
- BUCKETS
- Bucket Capacities8.6 to 9.2 m3 (11.2 to 12.0 yd3)
- AXLES
- FrontFixed
- RearOscillating Hitch
- Oscillation Angle8.5°
- BRAKES
- BrakesSAE J1473 OCT90, ISO 3450:1992
- HYDRAULIC SYSTEM: STEERING
- Relief Valve Setting - Steering32000 kPa
- Steering CircuitVariable Displacement Piston Pump
- Maximum Flow at 1400 rpm358 l/min
- Steering CircuitLoad Sensing Pilot, Demand Flow
- Total Steering Angle70°
- HYDRAULIC CYCLE TIMES
- Raise9.4 s
- Dump2.9 s
- Lower4.8 s
- Return to Dig3.7 s
- Dump Float3.6 s
- Total Hydraulic Cycle Time (Empty Bucket)15.9 s
- SOUND LEVELS: STANDARD
- Operator Sound Pressure Level (ISO 6396:2008)69 dB(A)
- Machine Sound Level (ISO 6395:2008)115 dB(A)
- SOUND LEVELS: SUPPRESSION
- Machine Sound Level (ISO 6395:2008)113 dB(A)
- Operator Sound Pressure Level (ISO 6396:2008)69 dB(A)
- DIMENSIONS (APPROXIMATE) - STANDARD LIFT
- Full Lift Reach2193 mm
- Ground to Top of ROPS5240 mm
- Max Lift Height4077 mm
- Overall Length12733 mm
- Ground to Top of Hood3862 mm
- Wheelbase4600 mm
- Ground Clearance at Full Height596 mm
- Hinge Pin Height at Max Lift5867 mm
- Ground to Bumper3795 mm
- Dump Clearance at Max Lift1079 mm
- Dump Angle at Max Lift47.4°
- Tilt Angle in Transport Position48.8°
- Front Axle to Bucket Edge4338 mm
- Tilt Angle at Max Lift63.7°
- Overall Height, Bucket Raised8231 mm
- Ground to Top of Exhaust Pipes5049 mm
- Tilt Angle: Ground Level40.4°
- DIMENSIONS (APPROXIMATE) - STANDARD LIFT
- Ground to Front Axle Center1186 mm
Standard Equipment for 990K (steel mill version)
-
DRIVER'S COMPARTMENT
- Air Conditioner and Heater with Automatic Temperature Control
- Pressurized and Soundproofed Cab, Rollover Protective Structure (ROPS/FOPS), Radio Ready (ambient) including Antenna, Speakers, and Converter (12V, 10-15 A)
- 12V Power Outlet for Mobile Phones or Laptop Connection
- Rear Vision Camera
- Cigarette Lighter and Ashtray
- Clothes Hook
- Electrohydraulic Lift and Tilt Controls (mounted on seat)
- Folding Armrest
- Heater and Defroster
- Electric Horn
- Hydraulic Equipment Lock
- Instruments, Indicators: - Engine Coolant Temperature - Fuel Level - Ground Speed - Gear - Hydraulic Oil Temperature - Speedometer/Tachometer - Torque Converter Temperature
- Instrumentation, Warning Lights: - Three-Level Warning System - Automatic Transmission Model Engagement - Brake Failure - Free Bucket Position Status - Delayed Engine Shutdown Status - Engine Idle Cutoff Status - Engine Failure - Fuel Saving Mode Status - Hydraulic System Safety - Lockup Clutch Engagement Status - Low Fuel Level - Parking Brake Status - Rim Pull Control Engagement Status - Seat Belt Warning - Auxiliary Steering (if equipped) - Throttle Lockup Status - Transmission Gear
- Keypad Control with Indicator Lights: - Automatic Transmission Mode Speed Range - Automatic/Manual Transmission Mode - Fuel Saving Mode - Equipment Disengagement - Lockup Clutch - Reduced Rim Pull - Throttle Lockup
- Ceiling Light (cab)
- Lunchbox Holders and Cup Holder
- Mirrors (mounted externally)
- Comfort Cat Seat (fabric cover) with Air Suspension
- 76mm (3in) Retractable Seat Belt
- STIC Control System with Directional Lock
- Tinted Glass
- Instructor Seat with Subabdominal Seat Belt
- Vital Information Management System (VIMS 3G) with Graphic Display: External Data Port, Customizable Driver Profiles, Cycle Timer, Integrated Payload Control System (PCS), Wipers with Built-in Washer (Front, Rear, and Corner), Intermittent Front Wipers
-
POWERTRAIN
- Fully Hydraulic, Oil-Bathed Brakes, Undercarriage Mounted
- Wheel Half-Shaft Oil-Bathed Disc Implement Brake
- Electrohydraulic Parking Brake
- Return-to-Sump Filters
- Cat Clean Emissions Module (Tier 4 Final only)
- Variable-Speed Fan
- C27 Cat Engine
- Electric Fuel Priming Pump
- Ground-Level Engine Shutdown, Bumpers
- Muffler (under hood) (Tier 2 only)
- Engine Air Precleaner
- Aluminum Modular Radiator (AMR)
- Separate Cooling Circuit
- Starting Aid, (ether) Manual Neutralization
- Throttle Lockup
- Lockup Clutch Torque Converter with Lockup Clutch and Rim Pull Control
- 534mm (21in) Transmission, Electronic Planetary Powershift Transmission (3F/3R)
-
ELECTRICAL EQUIPMENT
- Reverse Warning
- Alternator, 150A
- Maintenance-Free Batteries (2 - 1400 CCA)
- Converter, 10/15A, 24V to 12V
- Deutsch Component Connectors
- 24V Electrical Circuit
- Electronic Transmission Control
- Lighting Circuit, Halogen Headlights (Front and Rear), Access Ladder, Engine Compartment
- Starter, Electric
- Starter Lockout in Bumper
- Emergency Start Receptacle
- Transmission Lockout in Bumper
-
OTHER
- Automatic Bucket Lift/Tilt Kickouts, Electronically Adjustable from Cab
- Axle Temperature Sensor
- Battery Disconnect and Jump Start Receptacle, Bumpers
- Sealed Axle Joints with Caterpillar Axial Face Seals
- Economy Mode with Demand Acceleration
- Platform Emergency Descent
- Engine, Sump, 500-Hour Interval with CH4
- Engine Idle Management Features: - Auto Downshift at Idle - Delayed Engine Shutdown - Engine Idle Cutoff
- Fenders, Steel (Front)
- Protection, Belly and Powertrain
- Lubrication Points, Grouped and Labeled
- Hitch, Drawbar with Pin
- Hoses, Cat XT
- Oil Sampling Ports
- Positive Flow Hydraulic Circuit
- Product Link
- Level Gauges: Hydraulic Tanks, Steering/Fan and Implement/Brake, Transmission
- Access Ladder, Rear, Left and Right
- Load Sensing Steering
- Kickouts
- Anti-Vandalism Locks
- Venturi Stack
- Premixed Long-Life Coolant, 50% concentration, Freeze Protection to -34°C (-29°F)
Available Options for 990K (steel mill version)
-
POWERTRAIN
- Antifreeze -50°C (-58°F)
- High-Speed Engine Oil Drain System, Wiggins
- Engine Block Heater (120V or 240V)
- High Ambient Temperature Cooling, Software
-
DRIVER'S COMPARTMENT
- Cabin Prefilter
- AM/FM/CD/MP3 Radio
- Sirius Satellite Radio with Bluetooth
- Strobe Warning
- CB Radio Prep
- Sun Visor for Windshield
-
MISCELLANEOUS EQUIPMENT
- Front and Rear Road Travel Mudguards
- Quick Fuel Fill System (Shaw-Aero)
- Axle Oscillation Limit
- Extra-Durable Bushings
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