CAT 988K Large Wheel Loader With Diesel Engine 432 kW

I. Equipment Overview

This unit is a factory-new CAT 988K large wheel loader manufactured in 2021 and certified to U.S. EPA Tier 2 emission standards (equivalent to China’s National II standard). It features no selective catalytic reduction (SCR) system or urea injection infrastructure, thereby eliminating associated consumables and post-treatment maintenance requirements. Designed as a 50-ton class heavy-duty mining loader, it is engineered for high-productivity applications including quarry loading, stockpile management, bulk material haulage, and auxiliary mining support operations.

II. Core Operational Specifications

Operating weight (standard configuration): 51,062 kg

Rated payload capacity:

• 11.3 metric tons under hard rock conditions
• 14.5 metric tons under loose or fragmented material conditions

Standard bucket capacity: 6.4–7.6 m³ (rock bucket, ISO 10567-compliant)

Optional bucket range: 4.7–13.0 m³ (configurable for rock, earthmoving, and bulk handling duties)

Maximum lift height: 4,210 mm

Maximum dump height: 3,090 mm

Maximum dump reach (measured from front axle centerline): 1,560 mm

III. Powertrain System

Engine: CAT C18 ACERT diesel engine

Emission compliance: EPA Tier 2; no aftertreatment hardware required

Power output:

• Gross power: 432 kW (580 hp) at 1,500 rpm
• Net power (SAE J1349): 403 kW (540 hp)

Rated operating speed range: 1,500–1,700 rpm

Fuel tank capacity: 712 L

Cooling system: Hydraulic variable-frequency cooling fan — dynamically adjusts fan speed based on thermal load, ensuring optimal performance in high-temperature and high-dust environments

Air intake system: Dual-stage filtration with centrifugal pre-cleaner — delivers exceptional dust separation efficiency (>98% for particles >10 µm), validated for extended service life in abrasive mining conditions

IV. Transmission & Mobility Performance

Transmission: Electronically controlled, four-speed power-shift gearbox (4 forward, 3 reverse)

Torque converter: ICTC vane-clutch full-locking torque converter

Functional advantage: Eliminates slip-related energy loss during torque transfer; improves drivetrain efficiency, reduces fuel consumption, and shortens gear-shift response time

Travel speeds:

• Maximum forward speed: 34.5 km/h
• Maximum reverse speed: 24.5 km/h

Traction system: Full-time four-wheel drive with intelligent anti-slip control (ASC); maintains traction stability during high-load excavation and on uneven or low-adhesion surfaces

V. Hydraulic & Control Systems

Hydraulic architecture: Load-sensing variable-displacement system — delivers precise flow on demand, minimizes throttling losses, and reduces overall energy consumption by up to 15% compared to fixed-displacement systems

Standard cycle time (lift–dump–return): 10.5 seconds

System working pressure: 34 MPa

Braking system: Full-hydraulic, oil-cooled multi-disc service brake with integrated emergency/parking brake — provides consistent, fade-resistant stopping power under sustained heavy-load operation

Steering system: Full-hydraulic articulated steering with optimized hinge geometry — achieves a tight turning radius (≤ 8.2 m) and ensures responsive, stable maneuverability across confined or irregular worksites

VI. Undercarriage & Structural Configuration

Tires: Standard fitment of 35/65R33 heavy-duty mining tires (radial construction, deep-lug tread)

Frame: Reinforced box-section main frame with high torsional rigidity — validated for durability under cyclic loading in off-highway mining and aggregate applications

Articulation joint: Central pivot design with hardened steel bushings and sealed grease retention — ensures long service life, minimal play, and predictable steering response

VII. Dimensions & Clearance Data

Overall length (bucket retracted): 11,860 mm

Overall width (outer tire edges): 3,980 mm

Overall height (top of ROPS/FOPS-certified cab): 4,250 mm

Wheelbase: 4,500 mm

Ground clearance (minimum): 520 mm

VIII. Safety, Monitoring & Operator Support Systems

CAT Product Link™ telematics platform (integrated): Real-time monitoring of critical parameters (engine health, hydraulic temperature, filter differential pressure), fault code logging, and remote diagnostics capability

Maintenance interface: Standardized oil sampling port and quick-drain valve configuration — enables efficient fluid analysis and routine servicing

Service accessibility: Lockable maintenance access doors and elevated service platform — enhances technician safety and workflow efficiency during inspections and repairs

Operator environment: ROPS/FOPS-certified cab with active vibration isolation, acoustic damping, positive-pressure air filtration, and ergonomic controls — meets ISO 5013 and ISO 5015 operator comfort standards

Optional payload measurement system: On-board weighing module with real-time tonnage display and data export capability — supports production tracking, load optimization, and fleet utilization analytics

IX. Summary of Key Competitive Advantages

Proven powertrain reliability: Original CAT C18 ACERT engine — robust design, zero urea dependency, low unscheduled downtime, and reduced total cost of ownership over extended service intervals

Optimized energy efficiency: Full-locking torque converter combined with load-sensing hydraulics delivers industry-leading fuel economy in continuous heavy-load cycles — verified through third-party field testing under ISO 10262 duty cycles

Exceptional environmental resilience: Multi-tiered dust protection, oil-cooled braking, and reinforced structural design ensure sustained operational readiness in high-abrasion, high-temperature, and high-humidity mining and materials handling environments

High residual value and service continuity: Mature, widely deployed platform with extensive global parts distribution network; standardized components ensure rapid repair turnaround and stable secondary-market valuation