Categories ↠ Wheel Loaders ↠ Caterpillar 988K

Caterpillar 988K Wheel Loader

Category: Wheel Loaders ➔
Manufacturer: Caterpillar ➔
Model: 988K ➔

The Caterpillar 988K is a large wheel loader designed for high-production material handling in mining, quarry, and heavy construction applications. It is part of Caterpillar's 988 series and is built for loading haul trucks, stockpiling aggregate, and moving bulk materials. The 988K features a powerful diesel engine, articulated steering, and a reinforced frame for demanding duty cycles. Operator comfort, visibility, and service access are integrated into the design. Common attachments include general-purpose and rock buckets. The 988K is used in operations requiring high breakout force, efficient cycle times, and durable performance in abrasive environments.

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General Specifications

Breakout Force	98,421.00 lbs ft (133,439.20 nm) Starting 2023 Model Year
Bucket Capacity	6.5 - 13.5 (5.0 - 10.3) Starting 2024 Model Year
Bucket Capacity cu. yd. (cu m)	8.3 - 10.0 (6.3 - 7.6) Starting 2016 Model Year
Engine	C18 Starting 2023 Model Year
Engine Power	541 (403) Starting 2019 Model Year
Engine Power hp (kw)	541 (403) Starting 2016 Model Year
Engine type	Cat C18 Starting 2024 Model Year
Full-Turn Tip Load	79,435.00 lbs (36,031.15 kg) Starting 2021 Model Year
Full-Turn Tipping Load	79,435.00 lbs (36,031.15 kg) Starting 2023 Model Year
Max Dump Height	11.3 (3.4) Starting 2019 Model Year
Max Dump Height ft.( m)	6.8 (2.1) Starting 2016 Model Year
Net Power	538.00 hp (401.19 kw) Starting 2023 Model Year
Operating Weight	112,574.00 lbs (51,062.77 kg) Starting 2021 Model Year
Operating Weight lbs (kg)	112,574 (51,063) Starting 2016 Model Year
Tip Load	63,404 (28,760) Starting 2024 Model Year
Travel Speed	24 / 25.4 mph Starting 2024 Model Year
Travel Speed(Fwd/Rev)	24 / 25.4 mph Starting 2021 Model Year

Axles

Front	Fixed
Rear	Trunnion

Brakes

SAE J1473 OCT90 ISO 3450:1992

Engine

Bore	5.70 in (14.48 cm)
Displacement	1,105.00 cu in (18,107.75 cu cm)
Engine Model	Cat C18 ACERT
Gross - ISO 14396	580.00 hp (432.51 kw)
Make	Cat
Net Power	541.00 hp (403.43 kw)
Net Power - SAE J1349	541.00 hp (403.43 kw)
Peak Power Speed - 1,500 rpm - Gross - ISO 14396	580.00 hp (432.51 kw)
Peak Power Speed - 1,500 rpm - Gross - SAE J1995	588.00 hp (438.48 kw)
Peak Power Speed - 1,500 rpm - Net Power - SAE J1349	541.00 hp (403.43 kw)
Peak Torque - 1,200 rpm	2,104.00 lbs ft (2,852.60 nm)
Rated Speed	1700 rpm
Stroke	7.20 in (18.29 cm)
Torque Rise	58%

Hydraulic Cycle Times

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

Hydraulic System - Lift/Tilt

Lift/Tilt System	Variable displacement piston
Maximum Flow at 1,400-1,860 rpm	153.00 gpm (579.11 lpm)
Pilot System	Variable displacement piston

Hydraulic System - Steering

Steering Cycle Times - High Idle	3.4 seconds
Steering Cycle Times - Low Idle	5.6 seconds
Steering System - Circuit	Pilot load sensing
Steering System - Pump	Piston variable displacement

Operating Specifications

Cat Truck Match - High Lift	773-775
Cat Truck Match - Standard	770-772
Rated Bucket Capacity	8.30-10.00 cu yd (6.35-7.65 cu m)
Rated Payload	27,557.80 lbs (12,500.02 kg)
Rated Payload - High Lift	27,557.80 lbs (12,500.02 kg)
Rated Payload - Standard	27,557.80 lbs (12,500.02 kg)
Tipping Load - Articulated 37 degrees	68,005.00 lbs (30,846.59 kg)
Tipping Load - Straight	78,115.00 lbs (35,432.41 kg)

Service Refill Capacities

Cooling System	31.70 gal (119.98 l)
Crankcase	15.90 gal (60.18 l)
Diesel Exhaust Fluid Tank	8.70 gal (32.93 l)
Differential - Final Drives - Front	49.10 gal (185.84 l)
Differential - Final Drives - Rear	49.10 gal (185.84 l)
Hydraulic System - Tank Only	63.40 gal (239.97 l)
Hydraulic System Factory Fill	125.50 gal (475.02 l)
Transmission	31.70 gal (119.98 l)

Sound Performance - Standard

Machine Sound Level (ISO 6395)	111 dB(A)
Operator Sound Level (ISO 6396)	71 dB(A)

Sound Performance - Suppression

Machine Sound Level (ISO 6395)	109 dB(A)
Operator Sound Level (ISO 6396)	70 dB(A)

Transmission

Direct Drive - Forward 1	Lock-up disabled
Transmission Type	Cat planetary power shift

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