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Cat® 988K

Engine Model
Cat® C18 ACERT™
Net Power
403.0 kW
Working Weight
51062.0 kg
Description
  • Highly fuel efficient with economy mode – up to 20% fuel savings
  • Optimized Z bar linkage for improved productivity and visibility

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UP TO
41%
BETTER FUEL EFFICIENCY

Utilizing Economy Mode helps save on fuel all while maintaining productivity

UP TO
10%
MORE PRODUCTIVITY

Deliver more productivity in most truck loading applications while using performance series buckets with increased capacities

UP TO
10%
LOWER MAINTENANCE COST

Make regular maintenance more convenient with grouped service points

Highly fuel efficient with economy mode – up to 20% fuel savings

Optimized Z bar linkage for improved productivity and visibility

Cat® C18 ACERT™ Engine fully integrated electronic engine controls works in concert with the entire machine to make your fuel go farther.

Cat Planetary Powershift Transmission Consistent, smooth shifting and efficiency through integrated electronic controls that utilize the APECS.

Increase efficiency through our Positive Flow Control Hydraulic System by optimizing pump control, hydraulic oil flow is proportionate to implement lever movement.

Performance Series Buckets feature an optimized profile maximizing material retention and minimizing dig time, translating into significant productivity and fuel efficiency improvements.

PRODUCT SPECIFICATIONS FOR 988K 


Net Power 541 HP
Engine Model Cat® C18 ™
Bore 5.7 in
Stroke 7.2 in
Displacement 1105 in³
Torque Rise 58 %
Rated Speed 1700/min
Peak Torque - 1,200 rpm 2104 lb/ft
Net Power - SAE J1349 541 HP
Peak Power Speed 1500/min
Peak Power Speed - 1,500 rpm - Gross - ISO 14396 580 HP
Gross - ISO 14396 580 HP
Peak Power Speed - 1,500 rpm - Gross - SAE J1995 588 HP
Emissions U.S. EPA Tier 4 Final/EU Stage IV OR Tier 3/Stage IIIA Equivalent OR Tier 2/Stage II Equivalent
Peak Power Speed - 1,500 rpm - Net Power - SAE J1349 541 HP

Operating Weight 112574 lb
Bucket Capacity Range 4.7-13 m3 (6.2-17 yd3)
Rated Payload - Quarry Face 12.5 t
Cat Truck Match - High Lift 773~775
Rated Payload - Loose Material 16 t
Cat Truck Match - Standard 770~772

Bucket Capacities 4.7-13 m3 (6.2-17 yd3)

Transmission Type Cat-Planetenlastschaltgetriebe
Forward - 1 4 mile/h
Forward - 2 7.2 mile/h
Forward - 3 12.7 mile/h
Forward - 4 21.6 mile/h
Reverse - 1 4.7 mile/h
Reverse - 2 8.3 mile/h
Reverse - 3 14.4 mile/h
Direct Drive - Reverse 2 8.9 mile/h
Direct Drive - Reverse 3 15.8 mile/h
Direct Drive - Forward 2 7.8 mile/h
Direct Drive - Reverse 1 5 mile/h
Direct Drive - Forward 1 Lock-up disabled
Direct Drive - Forward 3 13.9 mile/h
Direct Drive - Forward 4 24.4 mile/h

Maximum Flow 13.7 gal/min
Maximum Flow at 1,400-1,860 rpm 153 gal/min
Lift/Tilt System Variable displacement piston
Cylinders, Double Acting - Tilt, Bore and Stroke 269 mm × 685 mm (8.7 in × 27 in)
Relief Valve Setting - Main 551 psi
Relief Valve Setting - Lift/Tilt 4757 psi
Pilot System Variable displacement piston
Cylinders, Double Acting - Lift, Bore and Stroke 210 mm × 1050 mm (8.7 in × 41.3 in)
Lift/Tilt System - Circuit EH- Positive Flow Control, Flow Sharing

Fuel Tank 188 gal (US)
Cooling System 31.7 gal (US)
Crankcase 15.9 gal (US)
Transmission 31.7 gal (US)
Hydraulic System - Tank Only 63.4 gal (US)
Differential - Final Drives - Rear 49.1 gal (US)
Hydraulic System Factory Fill 125.5 gal (US)
Diesel Exhaust Fluid Tank (For Tier 4 Final/Stage IV Only) 8.7 gal (US)
Differential - Final Drives - Front 49.1 gal (US)
Coolant (Validated by Test Cell Fill Quantities) 33 gal (US)
Transmission - Validated by Test Cell Fill Quantities 29 gal (US)

Front Fixed
Rear Trunnion
Oscillation Angle 13 °

Brakes SAE J1473 OKT90, ISO 3450:1992

Steering System - Pump Piston, variable displacement
Total Steering Angle 86 °
Maximum Flow 71.3 gal/min
Relief Valve Setting - Steering 4351 psi
Steering Cycle Times - High Idle 3.4 s
Steering System - Circuit Pilot, load sensing
Steering Cycle Times - Low Idle 5.6 s

Total Hydraulic Cycle Time - Empty Bucket 18.2 s
Lower Float Down 3.5 s
Rack Back 4.5 s
Raise 8 s
Dump 2.2 s

Operator Sound Level (ISO 6396) 72 dB(A)
Machine Sound Level (ISO 6395) 111 dB(A)

Machine Sound Level (ISO 6395) 109 dB(A)
Operator Sound Level (ISO 6396) 72 dB(A)

Operator Sound Level (ISO 6396) 72 dB(A)
Machine Sound Level (ISO 6395) 110 dB(A)

Machine Sound Level (ISO 6395) 112 dB(A)
Operator Sound Level ( ISO 6396) 73 dB(A)
BUCKETS

Cat buckets and Cat Ground Engaging Tools (GET) are designed and matched to the machine to ensure optimal performance and fuel efficiency.