Technicial Specifications
| Net Power - SAE J1349 | 538 hp 401 kW |
| Engine Model | Cat® C18 ™ Cat® C18 ™ |
| Engine Power - ISO 14396:2002 | 580 hp 432 kW |
| Gross Power - SAE J1995:2014 | 588 hp 436 kW |
| Rated Speed | 1,700 rpm 1,700 rpm |
| Peak Power Speed | 1,500 rpm 1,500 rpm |
| Emissions | U.S. EPA Tier 4 Final, EU Stage V, and Japan 2014 U.S. EPA Tier 4 Final, EU Stage V, and Japan 2014 |
| Bore | 5.7 in 145 mm |
| Stroke | 7.2 in 183 mm |
| Displacement | 1105 in³ 18.1 l |
| Peak Torque - 1,200 rpm - SAE J1995 | 2230 ft·lbf 3023 N·m |
| Torque Rise | 58% 58% |
| Operating Weight | 116362 lb 52781 kg |
| Operating Weight - Standard | 116362 lb 52781 kg |
| Operating Weight - High Lift | 119618 lb 54258 kg |
| Rated Payload - Standard (Quarry Face) | 12.5 ton (US) 11.3 t |
| Rated Payload - Loose Material (Standard) | 16 ton (US) 14.5 t |
| Bucket Capacity Range | 4.7-13 m3 (6.2-17 yd3) 4.7-13 m3 (6.2-17 yd3) |
| Transmission Type | Cat switched reluctance electric drive Cat switched reluctance electric drive |
| Forward 1 (virtual) | 4.3 mile/h 7 km/h |
| Forward 2 (virtual) | 7 mile/h 11.3 km/h |
| Forward 3 (virtual) | 13.8 mile/h 22.2 km/h |
| Forward 4 (virtual) | 20 mile/h 32.1 km/h |
| Reverse 1 (virtual) | 4.3 mile/h 7 km/h |
| Reverse 2 (virtual) | 7 mile/h 11.3 km/h |
| Reverse 3 (virtual) | 17.5 mile/h 28.2 km/h |
| Lift/Tilt System - Circuit | EH-Positive Flow Control, Flow Sharing EH-Positive Flow Control, Flow Sharing |
| Lift/Tilt System - Pump | Variable displacement piston Variable displacement piston |
| Maximum Flow at 1,400-1,600 rpm | 153 gal/min 580 l/min |
| Relief Valve Setting - Lift/Tilt | 4757 psi 32800 kPa |
| Lift Cylinder - Bore | 8.7 in 210 mm |
| Lift Cylinder - Stroke | 41.3 in 1050 mm |
| Tilt Cylinder - Bore | 8.7 in 269 mm |
| Tilt Cylinder - Stroke | 27 in 685 mm |
| Rack Back | 4.5 s 4.5 s |
| Raise | 8 s 8 s |
| Dump | 2.2 s 2.2 s |
| Lower Float Down | 3.5 s 3.5 s |
| Total Hydraulic Cycle Time | 18.2 s 18.2 s |
| Steering System - Circuit | Pilot, load sensing Pilot, load sensing |
| Steering System - Pump | Piston, variable displacement Piston, variable displacement |
| Maximum Flow at 1,400-1,600 rpm | 71.3 gal/min 270 l/min |
| Steering Cut Off Pressure | 4351 psi 30000 kPa |
| Total Steering Angle | 86° 86° |
| Steering Cycle Times - High Idle | 3.4 s 3.4 s |
| Steering Cycle Times - Low Idle | 5.6 s 5.6 s |
| Air Conditioning | The air conditioning system on this machine contains the fluorinated greenhouse gas refrigerant R134a (Global Warming Potential = 1430). The system contains 1.8 kg of refrigerant which has a CO2 equivalent of 2.574 metric tonnes. The air conditioning system on this machine contains the fluorinated greenhouse gas refrigerant R134a (Global Warming Potential = 1430). The system contains 1.8 kg of refrigerant which has a CO2 equivalent of 2.574 metric tonnes. |
| Front | Fixed Fixed |
| Rear | Trunnion Trunnion |
| Oscillation Angle | 13° 13° |
| Brakes | ISO 3450:2011 ISO 3450:2011 |
| ROPS/FOPS | ROPS/FOPS meet ISO 3471:2008 and ISO 3449:2005 Level II standards ROPS/FOPS meet ISO 3471:2008 and ISO 3449:2005 Level II standards |
| Fuel Tank | 147 gal (US) 555 l |
| Cooling System - Jacket Water | 30 gal (US) 112 l |
| Cooling Systems - Power Train | 8 gal (US) 30 l |
| Engine Crankcase | 16 gal (US) 60 l |
| Diesel Exhaust Fluid Tank | 8.7 gal (US) 33 l |
| Transmission | 16 gal (US) 60 l |
| Differential - Final Drives - Front | 49 gal (US) 186 l |
| Differential - Final Drives - Rear | 49 gal (US) 186 l |
| Hydraulic System - Implement/Steering | 126 gal (US) 475 l |
| Note | All nonroad Tier 4 Final/Stage V diesel engines are required to use: – The machine has the flexibility to run on either ultra-low-sulfur diesel fuel (ULSD with 15 ppm of sulfur or less). – Cat engines are compatible with the following renewable, alternative, and biodiesel* fuels that reduce greenhouse gases: Up to B20 biodiesel (FAME) ** Up to 100% HVO and GTL renewable fuels * Refer to guidelines for successful application. Please consult your Cat dealer or “Caterpillar Machine Fluids Recommendations” (SEBU6250) for details. – Cat DEO-ULS™ or oils that meet the Cat ECF-3, API CJ-4, and ACEA E9 specifications are required. – Only use DEF that meets ISO 22241-1 standards. All nonroad Tier 4 Final/Stage V diesel engines are required to use: – The machine has the flexibility to run on either ultra-low-sulfur diesel fuel (ULSD with 15 ppm of sulfur or less). – Cat engines are compatible with the following renewable, alternative, and biodiesel* fuels that reduce greenhouse gases: Up to B20 biodiesel (FAME) ** Up to 100% HVO and GTL renewable fuels * Refer to guidelines for successful application. Please consult your Cat dealer or “Caterpillar Machine Fluids Recommendations” (SEBU6250) for details. – Cat DEO-ULS™ or oils that meet the Cat ECF-3, API CJ-4, and ACEA E9 specifications are required. – Only use DEF that meets ISO 22241-1 standards. |
| Operator Sound Pressure Level (ISO 6396:2008) | 72 dB(A) 72 dB(A) |
| Machine Sound Power Level (ISO 6395:2008) | 109 dB(A) 109 dB(A) |
| Operator Sound Pressure Level (ISO 6396:2008) | 72 dB(A) 72 dB(A) |
| Machine Sound Power Level (ISO 6395:2008) | 110 dB(A) 110 dB(A) |
| Ground to Top of ROPS | 13.8 ft 4202 mm |
| Ground to Top of Exhaust Stacks | 14.8 ft 4498 mm |
| Ground to Top of Hood | 10.9 ft 3334 mm |
| Ground to Bumper Clearance | 3.1 ft 933 mm |
| Rear Axle - Centerline to Bumper | 10.5 ft 3187 mm |
| Front Axle Centerline to Bucket Tip | 14 ft 14 mm |
| Wheel Base | 14.9 ft 4550 mm |
| Maximum Overall Length | 39.3 ft 11991 mm |
| Ground to Lower Hitch Clearance | 1.9 ft 568 mm |
| Ground to Center of Axles | 3.2 ft 978 mm |
| Clearance at Maximum Lift | 11.9 ft 3641 mm |
| B-Pin Height - Maximum Lift | 18 ft 5479 mm |
| Maximum Overall Height - Bucket Raised | 24.5 ft 7455 mm |
| Reach - Maximum Lift | 6.5 ft 1981 mm |
| Note | Specs are calculated with 6.9 m3 (9.0 yd3) rock bucket and Michelin XLDD2 with 978 mm (3.2 ft) centerline of rear axle height. Specs are calculated with 6.9 m3 (9.0 yd3) rock bucket and Michelin XLDD2 with 978 mm (3.2 ft) centerline of rear axle height. |
| Ground to Top of ROPS | 13.8 ft 4202 mm |
| Ground to Top of Exhaust Stacks | 14.8 ft 4498 mm |
| Ground to Top of Hood | 10.9 ft 3334 mm |
| Ground to Bumper Clearance | 3.1 ft 933 mm |
| Rear Axle - Centerline to Bumper | 10.5 ft 3187 mm |
| Front Axle Centerline to Bucket Tip | 15.3 ft 4661 mm |
| Wheel Base | 14.9 ft 4550 mm |
| Maximum Overall Length | 40.7 ft 12398 mm |
| Ground to Lower Hitch Clearance | 1.9 ft 568 mm |
| Ground to Center of Axles | 3.2 ft 978 mm |
| Clearance at Maximum Lift | 13.3 ft 4043 mm |
| B-Pin Height - Maximum Lift | 19.3 ft 5881 mm |
| Maximum Overall Height - Bucket Raised | 25.8 ft 7849 mm |
| Reach - Maximum Lift | 6.8 ft 2062 mm |
| Note | Specs are calculated with 6.9 m3 (9.0 yd3) rock bucket and Michelin XLDD2 with 978 mm (3.2 ft) centerline of rear axle height. Specs are calculated with 6.9 m3 (9.0 yd3) rock bucket and Michelin XLDD2 with 978 mm (3.2 ft) centerline of rear axle height. |
| Ground to Top of ROPS | 13.8 ft 4221 mm |
| Ground to Top of Exhaust Stacks | 13.8 ft 4214 mm |
| Ground to Top of Hood | 10.9 ft 3334 mm |
| Ground to Bumper Clearance | 3.1 ft 933 mm |
| Rear Axle - Centerline to Bumper | 10.5 ft 3187 mm |
| Front Axle Centerline to Fork Tip | 16.5 ft 5023 mm |
| Wheel Base | 14.9 ft 4550 mm |
| Maximum Overall Length | 41.9 ft 12761 mm |
| Ground to Lower Hitch Clearance | 1.9 ft 568 mm |
| Ground to Center of Front Axle | 3.2 ft 978 mm |
| Fork Height with Level Arms | 8.1 ft 2474 mm |
| Fork Top Clamp Opening | 13.1 ft 4006 mm |
| Fork Height at Maximum Lift | 17.2 ft 5242 mm |
| Hinge Pin Height at Maximum Lift | 16.1 ft 4918 mm |
| Dump Angle at Maximum Lift | -39.4 ° -39.4 ° |
| Bucket Capacities | 4.7-13 m3 (6.2-17 yd3) 4.7-13 m3 (6.2-17 yd3) |
| Recyclability | 96% 96% |
Advantages and Features
PROVEN RELIABILITY
Proven Reliability
- With 15+ years of electric-drive experience, the 988 XE combines the simple and robust switched reluctance technology with existing 988 proven machine design.
- More than 90 percent identical to the 988.
- Fewer moving parts than traditional torque converter and mechanical transmission systems.
- Solid-state, fully sealed, and liquid-cooled powered electronics maximize durability in extreme conditions.
- Moves more material more efficiently with improved power and control.
- Cat C18 engine is built and tested to meet your most demanding applications.
- Advanced filtration system for extended performance and reliability of the hydraulic system.
LONG TERM VALUE AND DURABILITY
Durability
- Achieves long engine life and improved fuel efficiency with reduced high idle speed.
- Automatic retarder controls help maintain optimal speed on grade.
- One-piece castings help provide enhanced front linkage strength in key pin areas.
- Full box section rear frame helps resist torsional shock and twisting forces.
- Durable construction withstands the toughest loading conditions and multiple life cycles.
- Dynamic braking helps achieve long brake life while operating in single pedal mode.
ACHIEVE GREATER PRODUCTIVITY
Achieve Greater Productivity
- Electric-drive system eliminates shifting and simplifies operator control, helping to accelerate the learning curve of new operators.
- Superior acceleration, smoother directional shifts, and reduced travel times.
- Maximum responsiveness with Steering and Integrated Control (STIC™).
- Convenient, responsive electro-hydraulic controls help increase operator productivity.
- Superior digging, higher bucket fill factors, and reduced dig times.
- Improved visibility over the top of the linkage.
POWERFUL EFFICIENCY
Superior Fuel Efficiency
- Up to 32 percent more fuel efficiency in truck loading applications.
- Continuously variable speed control up to maximum ground speed.
- Positive Flow Control (PFC) hydraulic system helps increase efficiency, bucket feel, and responsiveness with consistent performance.
- Economy mode provides 100% ECM managed engine speed to help provide the most fuel efficient required RPM during machine operation.
- Fully integrated electronic engine controls help make your fuel go farther.
- Engine idle shutdown for less fuel used while idling.
- Flow sharing hydraulics provide full‑flow at reduced engine rpm.
- Increased hydraulic speed and faster cycle times help decrease idle time and fuel burn, with optimal efficiency.
PRODUCTIVITY WITH TECHNOLOGY
Increase Productivity and Efficiency with Integrated Technologies
- Cat Technologies developed to monitor, manage, and enhance your jobsite operations.
- Cat Payload provides accurate weighing* of the materials you are loading and hauling. Payload data is displayed in real-time to improve productivity and reduce overloading.
- Cat Detect enhances awareness of the environment around working equipment and provides alerts to help keep people and assets safe on the jobsite.
- Product Link™ wirelessly connects you to your equipment, giving you access to essential information you need to know to run your business.
- Gain valuable insight into how your machine or fleet is performing.
- Optional Advanced Productivity plan provides comprehensive actionable information to help you manage and improve the productivity and profitability of your operations.
- Improved cycle times and better bucket fill factors with optional Operator Coaching.
- Optimized dig segment cycle with optional Operator Assist – Tire Slip Prevention, Auto Set Tires, and Lift Stall Prevention.
- Easy to operate in single pedal with dynamic braking and operator assist features that allow faster training of new operators.
- Increase operator efficiency with Operator Coaching through onboard tips for truck loading operations.
SAFETY FIRST
Safety Features
- Operator presence sensing automatically engages the parking brake if the machine detects movement without an operator on the seat.
- External operator seat belt beacon indicates when the seat belt is not being used by the operator.
- Standard LED lights provide a safer work environment while operating in dark conditions.
- Hazardous voltage lamp assures electric drive system is de-energized and machine is safe to work on.
- Achieve precise positioning for easy loading in tight areas with 43 degrees of steering articulation.
- Precise machine control by load-sensing hydraulic steering system.
- Reduced stairway angles and standard stairway lighting helps provide lower risk of slips, trips, and falls due to better visibility of the steps and stairway.
- Computerized monitoring system with warning indicators.
- Standard Cat Vision enhances visibility behind the machine, helping you work safely and confidently.
- Pressurized cabin with filtered air and reduced sound levels.
SAVE ON SERVICE AND MAINTENANCE
Reduced Maintenance Time and Costs
- Electric-drive system helps maximize consumable life, reducing oil and filter waste. Enables two times the life for power train oil and four times the life for filters.
- Three levels of dynamic braking when operating in single pedal mode helps reduce break wear.
- Operator Assist features help reduce component and tire wear by automating critical dig segments while working in the material pile.
- Reduce the potential for wheel slippage without reducing hydraulic efficiency with RCS (Rimpull Control System) and modulating the left pedal from 100 to 25 percent.
- Long life, rebuildability, and high resale value with low maintenance costs.
- Grouped service points and swing-out engine compartment service doors provide easy access to critical daily service checks.
- Ecology drains to prevent spills.
- Reduced waste with maintenance-free batteries.
- Vehicle Information Management System (VIMS™) notifications to help resolve problems before failure.
- Operators can now monitor tire pressure during operation. Any change sending a fault code to VisionLink®, helps prevent premature tire failure.
OPERATOR COMFORT AND CONTROL
Easy, Comfortable Operator Environment
- World-class operator comfort and ergonomics.
- Cat Premium Plus seat with standard features including leather finish, forced air heating and cooling, two-way thigh adjustment, power lumbar and back bolster adjustment, and dynamic end dampening to provide total comfort throughout the workday.
- Easy-to-reach levers and seat-mounted implement pod to help reduce fatigue.
- Ergonomic switch placement and displays with LED indicators.
- Two-position rocker switch activates the electro-hydraulic parking brake.
- Reduced vibrations from isolated cab mounts and seat air suspension.
- Automatic cab temperature controls.
PURPOSE-BUILT SPECIALTY MODELS
Purpose-Built Specialty Arrangements
Millyard
- Unload a typical full-length log truck in a single pass with the larger
lift and tilt cylinders and a unique tilt lever to maximize linkage
force. Designed with 20% more lift capacity and 26% more tilt capacity over
the standard 988. - Swing out fan radiator design for easy service in high-debris
millyard applications helping to reduce maintenance and service down time.
Auto reversing fan system to help dislodge debris and keep air
flowing across the radiator cores. - Additional counterweight to help increase stability for improved
confidence while maneuvering with full loads. - Purpose-built lift arm with lowered cross member to help increase
visibility to the tips of the forks helping to increase the speed when
lining up the load and reduce operator movements to see the for
ks.
SUSTAINABILITY
Sustainability
- The Cat® C18 engine meets U.S. EPA Tier 4 Final, EU Stage V, and Japan 2014 emission standards.
- The 988 XE emits up to 37% less CO2 than the previous 988K*.
- Cat diesel engines are required to use ULSD (ultra-low sulfur diesel fuel with 15 ppm of sulfur or less) or ULSD blended with the following lower-carbon intensity fuels up to: 20% biodiesel FAME (fatty acid methyl ester) ** or 100% renewable diesel, HVO (hydrogenated vegetable oil) and GTL (gas-to-liquid) fuels. Refer to guidelines for successful application. Please consult your Cat dealer or “Caterpillar Machine Fluids Recommendations” (SEBU6250) for details.
- The Cat® clean emissions module includes Diesel Particulate Filter (DPF), Diesel Oxidation Catalyst (DOC), and Selective Catalytic Reduction (SCR) technologies to reduce the engine’s emissions.
- Engine Idle Shutdown Timer reduces fuel burn, greenhouse gas emissions and unnecessary idle time by shutting down the machine after a pre-set idling period.
- Autodig helps you work more efficiently and productively and reduce fuel burn, greenhouse gas emissions, machine wear and operator fatigue.
- Auto Set Tires reduce tire wear and lowers fuel burn and greenhouse gas emissions.
- Extended maintenance intervals not only reduce downtime but decrease the amount of fluid and filters that are replaced over the life of the machine.
- Rear Object Detection for the 988K XE helps enhance job site safety and blind spot awareness when operating in reverse.
- Cat® Payload technology maximizes loading efficiency, helping operators of every skill level work more accurately to reduce load time, fuel costs and greenhouse gas emissions. Upgrade to Advanced Payload for expanded features and capabilities that can further increase operator efficiency and accuracy.
**Engines with no aftertreatment devices can use higher blends, up to 100% biodiesel.
Standard Equipment
-
NOTE
- Standard and optional equipment may vary. Consult your Cat dealer for details.
-
ELECTRICAL
- Alarm, back-up
- Alternator, single 150 amp
- Batteries, dry
- Converter, 10/15 amp, 24V to 12V
- Lighting system (LED, work lights, access and service platform lighting)
- Starting and charging system, 24V
- Jump start receptacle
- Starter lockout in bumper
- Transmission lockout in bumper
- Hazardous voltage lamp
-
OPERATOR ENVIRONMENT
- Graphical Information Display, displays real time operating information, performs calibrations and customizes operator settings
- Air conditioner
- Cat Vision, rear vision camera system
- Cab, sound suppressed and pressurized, integrated rollover protective structure (ROPS/FOPS) radio ready for entertainment, includes antenna, speakers and converter (12‑volt 5-amp) and power port
- Controls, lift and tilt function
- Heater, defroster
- Horn, electric
-
Instrumentation, gauges
– Coolant temperature
– Engine hour meter
– Hydraulic oil temperature
– Power train oil temperature
- Light, cab, dome
- Lunchbox, beverage holders
- CB radio-ready
- Mirrors, rearview (externally mounted)
- Rimpull Control System
- Seat, Deluxe
- Seat belt minder
- Seat belt, retractable, 76 mm (3 in) wide
- STIC Control System
- UV glass
- Virtual gear indicator
- Vital Information Management System (VIMS) with Graphical Information Display: External Data Port, Customizable Operator Profiles, Cycle Timer, Integrated Payload Control System
-
Wet-Arm wipers/washers (front and rear)
– Intermittent front and rear wipers
- Lights, directional
-
POWER TRAIN
- Brakes, oil-cooled, multi-disc, service/secondary
- Case drain screens
- Electro hydraulic parking brake
- Engine, C18 MEUI diesel, turbocharged/aftercooled
- Ground level engine shutoff
- Turbine precleaner, engine air intake
- Radiator, Aluminum Modular Radiator (AMR)
- Starting aid, ether, automatic
- Throttle lock, electronic
- Manual switch and automatic fuel priming
- Cat Production Measurement ready
- Cat switched reluctance (SR) generator/pump drive
- Cat switched reluctance (SR) drive motor
- Cat Integrated Powered Electronics
- Automatic retarding controls
-
ADDITIONAL EQUIPMENT
- Automatic bucket lift kickout/positioner
- Base machine price includes a rim allowance
- Hydraulically driven demand fan
- Couplings, Cat O-ring face seals
- Doors, service access (locking)
- Ecology drains for engine, radiator, hydraulic tank
- Fuel tank, 555 L (147 gal)
- Hitch, drawbar with pin
- Hoses, Cat XT™
- Hydraulic, steering and brake filtration/screening system
- Cat Clean Emission Module
- Oil sampling valves
- Premixed 50 percent concentration of extended life coolant with freeze protection to –34° C (–29° F)
- Rear access to cab and service platform
- Steering, load sensing
- Toe kicks
- Vandalism protection caplocks
Optional Equipment
-
NOTE
- Standard and optional equipment may vary. Consult your Cat dealer for details.
-
POWER TRAIN
- –50° C (–58° F) antifreeze
- Engine oil change system, high speed, Wiggins
- Engine block heater 120V or 240V
- High ambient cooling – software
- Cat Production Measurement
- Crankcase guard
- Engine brake, software enabled attachment (SEA)
-
Other Optional Configurations
- Load and Carry
- Millyard
- Aggregate Handler
-
OPERATOR ENVIRONMENT
- Cab precleaner
- Cat Detect, object detection system
- Cat Production Measurement
- Radio, AM/FM/CD/MP3 Bluetooth® with Satellite SiriusXM
- LED warning strobe
- Window pull down visor
- Handrail mounted mirrors
-
ADDITIONAL EQUIPMENT
- Front and rear roading fenders
- Fast fill fuel system (Shaw-Aero)
- Cold Weather Package: Additional Starter and 2 Batteries, Engine Block Heater 120V or 240V, Heated Fuel Lines
- Engine Compartment Lights
- Autolube with Auto shutoff
- High Performance LED Lighting
- Wheel Chocks
- Operator Coaching
- Tire Pressure Monitoring System
- Autodig, Tire Slip Prevention, Auto Set Tires, and Lift Stall Prevention
- Additional Counterweight
