988K XE Wheel Loader

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Product Description

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 over 50 years, built on a legacy of reliability, performance, safety, operator comfort, serviceability, and productivity. The 988K XE brings improved sustainability and maximum efficiency to this machine platform.

Specifications
Us
Metric
Engine
Net Power
541 hp
403 kW
Engine Model
Cat® C18 ACERT™
Net Power – SAE J1349
541 hp
403 kW
Bore
5.7 in
145 mm
Stroke
7.2 in
183 mm
Displacement
1105 in3
18.1 L
Torque Rise
58%
Rated Speed
1,700 rpm
Emissions
U.S. EPA Tier 4 Final/EU Stage IV
Gross Power – ISO 14396
580 hp
432 kW
Peak Power Speed
1,500 rpm
Peak Power Speed @ 1,500 rpm: Gross – ISO 14396
580 hp
432 kW
Peak Power Speed @ 1,500 rpm: Gross – SAE J1995
588 hp
439 kW
Peak Power Speed @ 1,500 rpm: Net Power – SAE J1349
541 hp
403 kW
Peak Torque @ (speed) – SAE J1995
2104 lbf-ft
2852 N·m
Operating Specifications
Operating Weight
116362 lb
52781 kg
Rated Payload – Standard (face material)
12.5 tons
11.3 tonnes
Rated Payload – Standard (loose material)
16 tons
14.5 tonnes
Bucket Capacity Range
4.7-13 m3 (6.2-17 yd3)
Rated Payload – High Lift (face material)
12.5 tons
11.3 tonnes
Rated Payload – High Lift (loose material)
16 tons
14.5 tonnes
Buckets
Bucket Capacities
4.7-13 m3 (6.2-17 yd3)
Transmission
Transmission Type
Cat switched reluctance electric drive
Forward 1 (virtual)
4.3 mph
7 km/h
Forward 2 (virtual)
7 mph
11.3 km/h
Forward 3 (virtual)
13.8 mph
22.2 km/h
Forward 4 (virtual)
20 mph
32.1 km/h
Reverse 1 (virtual)
4.3 mph
7 km/h
Reverse 2 (virtual)
7 mph
11.3 km/h
Reverse 3 (virtual)
17.5 mph
28.2 km/h
Axles
Front
Fixed
Rear
Trunnion
Oscillation Angle
13°
Hydraulic System – Steering
Steering System – Circuit
Pilot, load sensing
Steering System – Pump
Piston, variable displacement
Maximum Flow @ × 1,400-1,600 rpm
71.3 gal/min
270 L/min
Steering Cut Off Pressure
4351 psi
30000 kPa
Total Steering Angle
86°
Steering Cycle Time (high idle)
3.4 sec
3.4 sec
Steering Cycle Time (low idle)
5.6 sec
5.6 sec
Service Refill Capacities
Fuel Tank
147 gal
555 L
Cooling System (jacket water)
30 gal
112 L
Cooling Systems (power train)
8 gal
30 L
Engine Crankcase
16 gal
60 L
Diesel Exhaust Fluid Tank
8.7 gal
33 L
Transmission
16 gal
60 L
Differentials and final drives – front
49 gal
186 L
Differentials and final drives – rear
49 gal
186 L
Hydraulic System – implement/steering
126 gal
475 L
Sound Performance – Tier 4 Final/Stage IV
Operator Sound Level (ISO 6396)
72 dB(A)
72 dB(A)
Machine Sound Level (ISO 6395)
109 dB(A)
109 dB(A)
Hydraulic System Lift/Tilt
Lift/Tilt System – Circuit
EH-Positive Flow Control, Flow Sharing
Lift/Tilt System Pumps
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
Hydraulic Cycle Time
Rackback
4.5 Seconds
4.5 Seconds
Raise
8 Seconds
8 Seconds
Dump
2.2 Seconds
2.2 Seconds
Lower Float Down
3.5 Seconds
3.5 Seconds
Total Hydraulic Cycle Time
18.2 Seconds
18.2 Seconds
Sound Performance – Tier 4 Final/Stage IV
Note
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
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
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.
Brakes
Brakes
ISO 3450:2011
Service Refill Capacities
Note
All non-road Tier 4 Final/Stage IV 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) or up to B20 biodiesel when feedstock meeting ASTM D7467 specifications is blended with ULSD. – 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.
Operating Specifications
Operating Weight – Standard
116362 lb
52781 kg
Operating Weight – High Lift
119618 lb
54258 kg
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.
Operator Cab
ROPS/FOPS
ROPS/FOPS meet ISO 3471:2008 and ISO 3449:2005 Level II standards
Hydraulic System – Steering
Steering
ISO 5010:2007
Dimensions (Approximate) – Standard Lift
Ground to Top of ROPS
13.7 ft
4187 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 Center Line to Bumper
10.5 ft
3187 mm
Front Axle Center Line to Bucket Tip
14.7 ft
4467 mm
Wheel Base
14.9 ft
4550 mm
Maximum Overall Length
40.0 ft
12204 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
11.3 ft
3445 mm
B-Pin Height at Maximum Lift
18.0 ft
5479 mm
Maximum Overall Height – Bucket Raised
24.5 ft
7455 mm
Reach at Maximum Lift
6.8 ft
2074 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.
Dimensions (Approximate) – High Lift
Ground to Top of ROPS
13.7 ft
4187 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 Center Line to Bumper
10.5 ft
3187 mm
Front Axle Center Line to Bucket Tip
15.9 ft
4854 mm
Wheel Base
14.9 ft
4550 mm
Maximum Overall Length
41.3 ft
12582 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
12.7 ft
3882 mm
B-Pin Height at Maximum Lift
19.3 ft
5881 mm
Maximum Overall Height – Bucket Raised
25.8 ft
7849 mm
Reach at Maximum Lift
7.0 ft
2130 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.
Standard/Optional

Standard Equipment

ELECTRICAL
OPERATOR ENVIRONMENT
POWER TRAIN
OTHER

Optional Equipment

POWER TRAIN
OPERATOR ENVIRONMENT
MISCELLANEOUS ATTACHMENTS

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