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Caterpillar 789D Wheel Station
Caterpillar 789D Wheel Station - Image 2
Caterpillar 789D Wheel Station - Image 3
Caterpillar 789D Wheel Station

Caterpillar 789D Wheel Station

Complete Heavy Mining Wheel Group

Complete OEM-spec Caterpillar 789D wheel station group for 200-ton mining haul trucks. Integrates heavy-duty wheel hubs, double-reduction planetary final drives (25.46:1 total reduction ratio), precision spindle mountings, rim studs, and oil-cooled multi-disc brake groups for a total wheel-end overhaul.

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Description

OEM-Quality Caterpillar 789D Wheel Station Assembly

Minimize downtime during major machine overhauls and restore end-to-end drive performance with a complete Caterpillar 789D Wheel Station Assembly. Designed specifically for Caterpillar’s 200-ton class off-highway mining trucks, this fully integrated wheel group incorporates the structural hub, spindle interface, planetary gear reductions, heavy-duty wheel bearings, seals, rim mounting hardware, and oil-cooled multi-disc braking housing into a single service unit.

Rather than sourcing individual components piece-by-piece, replacing the entire wheel station ensures matched component tolerances, uniform wear patterns, and immediate return to peak payload performance.

Key Features & Benefits

  • All-in-One Heavy Wheel Group Solution: Combines the load-bearing hub structure, wheel bearings, planetary reduction gearing, and brake pack housing into a single drop-in package.

  • Integrated Double-Reduction Planetary System: Features Caterpillar’s high-torque planetary arrangement (10.83:1 planetary ratio / 25.46:1 overall reduction ratio) to convert high-speed shaft input into massive rim power.

  • Force-Cooled Multi-Disc Braking: Features housing for Caterpillar’s liquid-cooled multi-disc braking system, delivering fade-resistant retarding performance on steep downhill hauls.

  • Heavy-Duty Duo-Cone & Face Seals: Engineered to retain lubricant while resisting contamination from harsh site conditions, slurry, rock dust, and water spray.

  • Direct OEM Frame & Spindle Mating: Built to exact Caterpillar 789D factory tolerances for immediate bolt-on mounting to standard front spindles or rear axle housings.

Verified Technical Specifications

Parameter Specification
Compatible Machine Model Caterpillar 789D Off-Highway Mining Truck
Component Group Complete Wheel Station / Wheel Assembly Group
Nominal Truck Payload Capacity 181 tonnes / 200 tons
Planetary Gear Reduction Ratio 10.83 : 1
Total Rear Drive Reduction Ratio 25.46 : 1 (Differential + Final Drive)
Oil-Cooled Rear Brake Surface Area 116,283 cm² (18,024 in²)
Oil-Cooled Front Brake Surface Area 81,693 cm² (12,662 in²)
Standard Mining Rim/Tire Fitment 37.00-R57 (Optional 40.00-R57)
Application Rear Drive Wheel Stations & Front Steering Wheel Stations

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