Caterpillar Wheel Loader 988 | 51 ton

Description

Caterpillar Wheel Loader 988 | 51 ton

The Caterpillar 988 is a staple in large-scale earthmoving and quarrying, and the “51-ton” designation specifically refers to the operating weight of the modern 988K or 988 GC models.
Below are the key technical specifications for the Caterpillar 988K, which is the most common configuration for this weight class.

Engine Specifications

The unit is powered by the heavy-duty Cat C18 engine, designed for high-torque applications.
Engine Model: Cat® C18.
Net Power (ISO 9249):3 541 hp (403 kW).
Gross Power (SAE J1995):5 588 hp (439 kW).
Bore / Stroke: 145 mm / 183 mm
Displacement: 18.1 L.
Peak Torque (@ 1,200 rpm):9 2,852 N·m.

Operating Specifications

The 988 is optimized to match with 50-ton class off-highway trucks (like the Cat 770 or 772).
Operating Weight: ~51,062 kg (Approx.12 51.1 tons).
Rated Payload (Quarry Face): 11.3 tonnes (12.5 tons).
Rated Payload (Loose Material): 14.5 tonnes (16.0 tons).
Bucket Capacity Range: 4.7 m³ to 13.0 m³ (13$6.2$ to 14$17.0$ yd³).
Static Tipping Load (Full Turn): ~36,483 kg.

Transmission & Performance

The planetary power shift transmission allows for smooth shifting under heavy loads.
Transmission Type: Cat Planetary Power Shift.
Forward Top Speed: 34.7 km/h (4th Gear).
Reverse Top Speed: 23.2 km/h (3rd Gear).
Direct Drive (Lock-up): Enabled in 2nd, 3rd, and 4th gears for increased fuel efficiency.

Dimensions (Standard Lift)

Ground to Top of ROPS: 4,202 mm.
Wheel Base: 4,550 mm.
Overall Length: 11,991 mm.
Clearance at Max Lift (45° Dump): 3,641 mm.
Turning Radius (Outside Bucket): 8.69 m.
Note on the 988 GC: If you are looking for a more “economy-focused” version, the 988 GC also shares the 51-ton operating weight but uses a Cat C15 engine (approx.22 449 hp) and is specifically designed as an “Optimum 50-ton truck match” loader for lower-intensity cycles.
Would you like me to compare the performance specs between the standard 988K and the 988 GC for your specific job site needs?