Cat 988K XE Wheel Loader
THE RUNDOWN
PROVEN RELIABILITY
LONG TERM VALUE AND DURABILITY
ACHIEVE GREATER PRODUCTIVITY
POWERFUL EFFICIENCY
PRODUCTIVITY WITH TECHNOLOGY
SAFETY FIRST
SAVE ON SERVICE AND MAINTENANCE
OPERATOR COMFORT AND CONTROL
PURPOSE-BUILT SPECIALTY MODELS
SUSTAINABILITY
Engine
| Net Power - SAE J1349:2011 | 538hp |
| Engine Model | Cat® C18 ™ |
| Engine Power - ISO 14396 | 580hp |
| Gross Power - SAE J1995:2014 | 588hp |
| Rated Speed | 1,700 rpm |
| Emissions | U.S. EPA Tier 4 Final, EU Stage V, and Japan 2014 |
| Peak Power Speed | 1,500 rpm |
| Bore | 5.7in |
| Stroke | 7.2in |
| Displacement | 1105in³ |
| Peak Torque - 1,200 rpm - SAE J1995 | 2230ft·lbf |
| Torque Rise | 58% |
Operating Specifications
| Operating Weight | 116362lb |
| Operating Weight - Standard | 116362lb |
| Operating Weight - High Lift | 119618lb |
| Rated Payload - Standard (Quarry Face) | 12.5ton (US) |
| Rated Payload - Loose Material (Standard) | 16ton (US) |
| Bucket Capacity Range | 4.7-13 m3 (6.2-17 yd3) |
Transmission
| Transmission Type | Cat switched reluctance electric drive |
| Forward 1 (virtual) | 4.3mile/h |
| Forward 2 (virtual) | 7mile/h |
| Forward 3 (virtual) | 13.8mile/h |
| Forward 4 (virtual) | 20mile/h |
| Reverse 1 (virtual) | 4.3mile/h |
| Reverse 2 (virtual) | 7mile/h |
| Reverse 3 (virtual) | 17.5mile/h |
Hydraulic System - Lift/Tilt
| Lift/Tilt System - Circuit | EH-Positive Flow Control, Flow Sharing |
| Lift/Tilt System - Pump | Variable displacement piston |
| Maximum Flow at 1,400-1,600 rpm | 153gpm |
| Relief Valve Setting - Lift/Tilt | 4757psi |
| Lift Cylinder - Bore | 8.7in |
| Lift Cylinder - Stroke | 41.3in |
| Tilt Cylinder - Bore | 8.7in |
| Tilt Cylinder - Stroke | 27in |
Hydraulic Cycle Times
| Rack Back | 4.5s |
| Raise | 8s |
| Dump | 2.2s |
| Lower Float Down | 3.5s |
| Total Hydraulic Cycle Time | 18.2s |
Hydraulic System - Steering
| Steering System - Circuit | Pilot, load sensing |
| Steering System - Pump | Piston, variable displacement |
| Maximum Flow at 1,400-1,600 rpm | 71.3gpm |
| Steering Cut Off Pressure | 4351psi |
| Total Steering Angle | 86° |
| Steering Cycle Times - High Idle | 3.4s |
| Steering Cycle Times - Low Idle | 5.6s |
Air Conditioning System
| 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. |
Axles
| Front | Fixed |
| Rear | Trunnion |
| Oscillation Angle | 13° |
Brakes
| Brakes | ISO 3450:2011 |
Operator's Cab
| ROPS/FOPS | ROPS/FOPS meet ISO 3471:2008 and ISO 3449:2005 Level II standards |
Service Refill Capacities
| Fuel Tank | 147gal (US) |
| Cooling System - Jacket Water | 30gal (US) |
| Cooling Systems - Power Train | 8gal (US) |
| Engine Crankcase | 16gal (US) |
| Diesel Exhaust Fluid Tank | 8.7gal (US) |
| Transmission | 16gal (US) |
| Differential - Final Drives - Front | 49gal (US) |
| Differential - Final Drives - Rear | 49gal (US) |
| Hydraulic System - Implement/Steering | 126gal (US) |
| 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. |
Sound Performance - Tier 4 Final/EU Stage V - Standard
| Operator Sound Level (ISO 6396) | 72dB(A) |
| Machine Sound Level (ISO 6395) | 109dB(A) |
| Note (1) | The operator sound pressure level was measured according to the test procedures and conditions specified in ISO 6396:2008. The measurement was conducted at 70 percent of the maximum engine cooling fan speed. |
| Note (2) | Hearing protection may be needed when the machine is operated with a cab that is not properly maintained or when the doors or windows are open for extended periods or in a noisy environment. |
| Note (3) | The machine sound power level was measured according to the test procedures and conditions specified in ISO 6395:2008. The measurement was conducted at 70 percent of the maximum engine cooling fan speed. |
Dimensions (Approximate) - Standard Lift
| Ground to Top of ROPS | 13.8ft |
| Ground to Top of Exhaust Stacks | 14.8ft |
| Ground to Top of Hood | 10.9ft |
| Ground to Bumper Clearance | 3.1ft |
| Rear Axle - Centerline to Bumper | 10.5ft |
| Front Axle Centerline to Bucket Tip | 14.0ft |
| Wheel Base | 14.9ft |
| Maximum Overall Length | 39.3ft |
| Ground to Lower Hitch Clearance | 1.9ft |
| Ground to Center of Axles | 3.2ft |
| Clearance at Maximum Lift | 11.9ft |
| B-Pin Height - Maximum Lift | 18.0ft |
| Maximum Overall Height - Bucket Raised | 24.5ft |
| Reach - Maximum Lift | 6.5ft |
| 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. |
Dimensions (Approximate) - High Lift
| Ground to Top of ROPS | 13.8ft |
| Ground to Top of Exhaust Stacks | 14.8ft |
| Ground to Top of Hood | 10.9ft |
| Ground to Bumper Clearance | 3.1ft |
| Rear Axle - Centerline to Bumper | 10.5ft |
| Front Axle Centerline to Bucket Tip | 15.3ft |
| Wheel Base | 14.9ft |
| Maximum Overall Length | 40.7ft |
| Ground to Lower Hitch Clearance | 1.9ft |
| Ground to Center of Axles | 3.2ft |
| Clearance at Maximum Lift | 13.3ft |
| B-Pin Height - Maximum Lift | 19.3ft |
| Maximum Overall Height - Bucket Raised | 25.8ft |
| Reach - Maximum Lift | 6.8ft |
| 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. |
Buckets
| Bucket Capacities | 4.7-13 m3 (6.2-17 yd3) |
Sustainability
| Recyclability | 96% |