988K Steel Mill Arrangement
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
541.0 HP
Engine Model
Cat® C18 ™
Net Power - SAE J1349
541.0 HP
Specification
Value
Net Power
541.0 HP
Engine Model
Cat® C18 ™
Net Power - SAE J1349
541.0 HP
Bore
5.7 in
Stroke
7.2 in
Displacement
1105.0 in³
Torque Rise
58.0 %
Rated Speed
1700/min
Peak Power Speed - 1,500 rpm - Gross - ISO 14396
580.0 HP
Gross - ISO 14396
580.0 HP
Peak Power Speed
1500/min
Peak Power Speed - 1,500 rpm - Gross - SAE J1995
588.0 HP
Peak Torque - 1,200 rpm
2104.0 lb/ft
Peak Power Speed - 1,500 rpm - Net Power - SAE J1349
541.0 HP
Emissions
Einhaltung von EPA Tier 4 Final (USA)/Stufe V (EU), Tier-2-konform
Specification
Value
Operating Weight
112574.0 lb
Rated Payload
12.5 t
Rated Payload - Standard
12.5 t
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
12.5 t
Specification
Value
Transmission Type
Cat-Planetenlastschaltgetriebe
Forward - 1
4.0 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 - Forward 1
Lock-up disabled
Direct Drive - Forward 2
7.8 mile/h
Direct Drive - Forward 3
13.9 mile/h
Direct Drive - Forward 4
24.4 mile/h
Direct Drive - Reverse 1
5.0 mile/h
Direct Drive - Reverse 2
8.9 mile/h
Direct Drive - Reverse 3
15.8 mile/h
Specification
Value
Pilot System
Variable displacement piston
Relief Valve Setting - Main
551.0 psi
Maximum Flow
13.7 gal/min
Cylinders, Double Acting - Tilt, Bore and Stroke
267 mm × 685 mm (10.5 in × 27.0 in)
Maximum Flow at 1,400-1,860 rpm
153.0 gal/min
Cylinders, Double Acting - Lift, Bore and Stroke
210 mm × 1050 mm (8.3 in × 41.3 in)
Lift/Tilt System
Variable displacement piston
Lift/Tilt System - Circuit
EH- Positive Flow Control, Flow Sharing
Relief Valve Setting - Lift/Tilt
4757.0 psi
Specification
Value
Fuel Tank
181.0 gal (US)
Cooling System
31.7 gal (US)
Crankcase
15.9 gal (US)
Transmission
31.7 gal (US)
Differential - Final Drives - Front
49.1 gal (US)
Differential - Final Drives - Rear
49.1 gal (US)
Hydraulic System - Tank Only
63.4 gal (US)
Diesel Exhaust Fluid Tank (Tier 4)
8.7 gal (US)
Hydraulic System Factory Fill
125.5 gal (US)
Specification
Value
Bucket Capacities
5.4-6.3 m3 (7.0-8.3 yd3)
Specification
Value
Front
Fixed
Rear
Trunnion
Oscillation Angle
±6°
Specification
Value
Brakes
SAE J1473 OKT90, ISO 3450:1992
Specification
Value
Steering System - Circuit
Pilot, load sensing
Steering System - Pump
Piston, variable displacement
Relief Valve Setting - Steering
4351.0 psi
Maximum Flow
71.3 gal/min
Steering Cycle Times - Low Idle
5.6 s
Total Steering Angle
80.0 °
Steering Cycle Times - High Idle
3.4 s
Specification
Value
Rack Back
4.5 s
Lower Float Down
3.5 s
Raise
8.0 s
Total Hydraulic Cycle Time - Empty Bucket
18.2 s
Dump
2.2 s
Specification
Value
Operator Sound Level (ISO 6396)
71.0 dB(A)
Machine Sound Level (ISO 6395)
111.0 dB(A)
Specification
Value
Operator Sound Level (ISO 6396)
70.0 dB(A)
Machine Sound Level (ISO 6395)
109.0 dB(A)
