Cat Large Wheel Loaders are designed with durability built in, ensuring maximum availability through multiple life cycles. With optimized performance and simplified serviceability, our machines allow you to move more material efficiently and safely at a lower cost per ton. Introduced in 1963, the 988 has been the industry leader for 50 years. Focused on helping our customers succeed, we have continued to build upon each new series. The 988K continues our legacy of reliability, performance, safety, operator comfort, serviceability, and efficiency.
|Net Power||403.0 kW|
|Engine Model||Cat® C18 ACERT™|
|Net Power – SAE J1349||403.0 kW|
|Torque Rise||58.0 %|
|Rated Speed||1,700 rpm|
|Emissions||U.S. EPA Tier 4 Final/EU Stage IV, Tier 2 Equivalent|
|Gross (ISO 14396)||432.0 kW|
|Peak Power Speed||1,500 rpm|
|Peak Power Speed @ 1,500 rpm: Gross – ISO 14396||432.0 kW|
|Peak Power Speed @ 1,500 rpm: Gross – SAE J1995||439.0 kW|
|Peak Power Speed @ 1,500 rpm: Net Power – SAE J1349||403.0 kW|
|Peak Torque @ 1,200 rpm||2852.0 N·m|
|Operating Weight||51062.0 kg|
|Rated Payload||11.3 tonnes|
|Rated Payload – Standard||11.3 tonnes|
|Bucket Capacity Range||6.4-7.6 m3 (8.3-10 yd3)|
|Cat Truck Match – Standard||770-772|
|Cat Truck Match – High Lift||773-775|
|Rated Payload – High Lift||11.3 tonnes|
|Transmission Type||Cat planetary power shift|
|Forward 1||6.5 km/h|
|Forward 2||11.6 km/h|
|Forward 3||20.4 km/h|
|Forward 4||34.7 km/h|
|Reverse 1||7.5 km/h|
|Reverse 2||13.3 km/h|
|Reverse 3||23.2 km/h|
|Direct Drive – Forward 1||Lock-up disabled|
|Direct Drive – Forward 2||12.5 km/h|
|Direct Drive – Forward 3||22.3 km/h|
|Direct Drive – Forward 4||39.3 km/h|
|Direct Drive – Reverse 1||8.0 km/h|
|Direct Drive – Reverse 2||14.3 km/h|
|Direct Drive – Reverse 3||25.5 km/h|
Hydraulic System – Lift/Tilt
|Cylinders, Double Acting: Lift, Bore and Stroke||210 mm × 1050 mm (8.3 in × 41.3 in)|
|Cylinders, Double Acting: Tilt, Bore and Stroke||267 mm × 685 mm (10.5 in × 27.0 in)|
|Lift/Tilt System||Variable displacement piston|
|Maximum Flow||52.0 L/min|
|Maximum Flow at 1,400-1,860 rpm||580.0 L/min|
|Pilot System||Variable displacement piston|
|Relief Valve Setting||3800.0 kPa|
|Lift/Tilt System – Circuit||EH- Positive Flow Control, Flow Sharing|
|Relief Valve Setting – Lift/Tilt||32800.0 kPa|
Service Refill Capacities
|Fuel Tank||686.0 L|
|Cooling System||120.0 L|
|Differentials and Final Drives – Front||186.0 L|
|Differentials and Final Drives – Rear||186.0 L|
|Hydraulic System (tank only)||240.0 L|
|Diesel Exhaust Fluid Tank (Tier 4)||33.0 L|
|Hydraulic System Factory Fill||475.0 L|
|Bucket Capacities||5.4-6.3 m3 (7.0-8.3 yd3)|
|Brakes||SAE J1473 OCT90, ISO 3450:1992|
Hydraulic System – Steering
|Steering System – Circuit||Pilot, load sensing|
|Steering System – Pump||Piston, variable displacement|
|Relief Valve Setting – Steering||30000.0 kPa|
|Maximum Flow||270.0 L/min|
|Steering Cycle Time (high idle)||3.4 Seconds|
|Steering Cycle Time (low idle)||5.6 Seconds|
|Total Steering Angle||80.0 Degrees|
Hydraulic Cycle Time (1,400-1,860 rpm)
|Lower Float Down||3.5 Seconds|
|Total Hydraulic Cycle Time (empty bucket)||18.2 Seconds|
Sound Performance – Standard
|Machine Sound Level (ISO 6395)||111.0 dB(A)|
|Operator Sound Level (ISO 6396)||71.0 dB(A)|
Sound Performance – Suppression
|Machine Sound Level (ISO 6395)||109.0 dB(A)|
|Operator Sound Level (ISO 6396)||70.0 dB(A)|
Delivering fuel efficiency you demand through integrated machine systems.
Cat C18 ACERT Engine
The Cat C18 ACERT engine is built and tested to meet your most demanding applications while meeting U.S. EPA Tier 4 Final/EU Stage IV, Tier 2 Equivalent emission standards.
Cat Planetary Powershift Transmission
Featuring all new Advanced Productivity Electronic Control Shifting (APECS) transmission controls provides greater momentum on grades and fuel savings by carrying that momentum through the shift points.
Impeller Clutch Torque Converter (ICTC)
Enable your operators to maximize efficiency by varying machine rimpull while putting more horsepower to hydraulics.
Cat Torque Converter with Lock-up Clutch
Enabling maximum productivity and efficiency, all day every day. The 988K systems work hard to save you fuel through advanced technologies. Utilizing On Demand Throttle, operators maintain normal operation with the left pedal and implements while the 988K manages the engine speed.
Best built for the toughest conditions.
Your bottom line is improved by highly durable structures that achieve multiple life cycles and withstand the toughest loading conditions.
To ensure long life and reliability, the linkage pin joints feature a greased pin design with an auto lube system attachment available from the factory.
Move material more efficiently with improved power and control.
Steering and Transmission Integrated Control System (STIC™)
Experience maximum responsiveness and control with STIC that combines directional selection, gear selection and steering into a single lever.
Cat Planetary Powershift Transmission
Building your success begins with a best-in-class transmission designed specifically for mining applications.
Cat C18 ACERT Engine
Durability and efficiency at the heart of your 988K comes from the Cat C18 ACERT Engine. Optimum performance is built in through the use of a 6 cylinder, four-stroke design.
Impeller Clutch Torque Converter (ICTC) and Rimpull Control System (RCS)
Lower your cost per ton utilizing advanced ICTC and RCS for modulated rimpull.
Productivity enabling you to move more and make more.
Positive Flow Control Hydraulics
Increase efficiency through our Positive Flow Control (PFC) Hydraulic System. PFC has concurrent pump and valve control. By optimizing pump control, hydraulic oil flow is proportionate to implement lever movement.
Electro Hydraulic Controls
Operators increase productivity with our responsive implements feature.
Confident loader operation starts with precise machine control enabled by the 988K’s load sensing hydraulic steering system.
Benefit from extended performance and reliability of your hydraulic system with our advanced filtration system.
Best-in-class operator comfort and ergonomics.
Your operators can work more efficiently and stay comfortable with our customer-inspired cab features.
Entry and Exit
Enter and exit the cab easily and safely with these newly designed, ergonomic features.
Cat Comfort Series III Seat
Enhance comfort and help reduce operator fatigue with Cat Comfort Series III seat.
Ergonomic placement of switches and Information display keep your operators comfortable all day every day.
Your operator’s productivity is enhanced with our clean, comfortable cab environment.
Greater productivity through Integrated Electronic Systems.
The 988K electronic systems have been completely integrated to function as one machine. This integration creates a smart machine and more informed operator, maximizing the productivity of both.
Cat Product Link™
Cat Product link allows remote monitoring of equipment to improve overall fleet management effectiveness. Events and diagnostic codes, as well as hours, fuel, idle time and other information are transmitted to a secure web based application, VisionLink®. VisionLink includes powerful tools to convey information to users and dealers, including mapping, working and idle time, fuel level and more.
We have worked hard to help our customers and operators perform at their best through our Vital Information Management System (VIMS 3G).
Payload Control System
Increase your efficiency with our Payload Control System 3.0.
Impact your bottom line through improved machine performance with Cycle Timer. Each loading segment time can be analyzed to help you achieve more efficient operation. Features:
Enabling high uptime by reducing your service time.
We can help you succeed by ensuring your 988K has design features to reduce your downtime.
Your Cat dealers know how to keep your machines productive.
Legendary Cat Dealer Support
A valued partner, your Cat dealer is available whenever you need them.
Making your safety our priority.
We are continuously improving our products in an effort to provide a safe work environment for the operator and those who work on your job site.
Steel Mill Features
Keep running in the toughest environment.
Added protection even where you can’t see it.
Operator Station and Machine Access
A comfortable working environment ready for your attachments.
Keep the machine clean and cool in a hot environment.
Steel mills can be a harsh environment. Extra guarding for critical machine functions keep your operation running.
Buckets and Ground Engaging Tools
Protect your investment.
Enhance the productivity of your loader and protect your investment in buckets with our Ground Engaging Tools (GET). Your knowledgeable Cat dealer will work with you to understand your application and needs for the GET that is best for you.
Performance Series Buckets
Performance Series Buckets feature an optimized profile maximizing material retention and minimizing dig time, translating into significant productivity and fuel efficiency improvements. All 988K buckets are manufactured with the Performance Series design.
Serrated Edge Slag Bucket
Serrated spade edge bucket with abrasion resistant material. Excellent penetration combined with weld-on self sharpening serrated segments.
Straight Edge Slag Bucket
Straight edge bucket with J600 tooth adapters and replaceable weld-on segments.
Extra material and robust design for digging and handling slag.
Save Time and Money by Working Smart.
Data from customer machines show Cat wheel loaders are among the most fuel efficient machines in the industry. Several features contribute to this excellent fuel efficiency:
Machine configuration, operator technique, and job site layout can impact fuel consumption.
988K Steel Mill Arrangement Standard Equipment
988K Steel Mill Arrangement Optional Equipment