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Caterpillar 777G Wheel Station

Caterpillar 777G Wheel Station Assembly | Complete Mining Wheel Group

Complete OEM-spec Caterpillar 777G wheel station assembly for 100-ton haul trucks. Combines heavy-duty wheel hubs, double-reduction planetary final drives (18.83:1 total reduction ratio), precision spindle mounts, rim hardware, and oil-cooled multi-disc brake groups for total wheel-end overhaul and minimal machine downtime.

Description

OEM-Quality Caterpillar 777G Wheel Station Assembly

Eliminate extended downtime during major power train overhauls and ensure long-term haul road reliability with a complete Caterpillar 777G Wheel Station Assembly. Designed specifically for Caterpillar’s 100-ton class (91.4-tonne nominal payload) off-highway mining trucks, this fully integrated wheel station combines the structural hub, spindle interface, planetary gear reductions, heavy-duty bearings, Duo-Cone seals, rim hardware, and oil-cooled multi-disc brake pack into a single drop-in unit.

Replacing the entire wheel station as a complete module guarantees factory-matched component tolerances, eliminates premature seal or bearing failure from mismatched wear, and gets your haul truck back on the bench faster.

Key Features & Benefits

  • Complete Wheel-End Integration: Integrates the wheel hub, double-reduction planetary system, axle bearings, and force-cooled braking system into one pre-assembled module.

  • High-Torque Planetary Reduction: Features Caterpillar’s robust planetary gear setup (6.87:1 planetary ratio / 18.83:1 total reduction ratio) to maximize low-speed rim pull without overloading the driveshaft or differential.

  • Oil-Cooled Multi-Disc Brake System: Includes the housing and friction packs for Caterpillar’s liquid-cooled braking system, delivering superior, fade-resistant retarding power on continuous downhill hauls.

  • Heavy-Duty Duo-Cone Metal Face Seals: Maintains absolute lubricant retention while completely sealing out fine quarry dust, abrasive slurry, mud, and water ingress.

  • Direct OEM Fit: Built to exact Caterpillar 777G factory specifications for direct bolt-on mounting to standard front spindles or rear axle housings.

Verified Technical Specifications

Parameter Specification
Compatible Machine Model Caterpillar 777G Off-Highway / Mining Truck
Component Group Complete Wheel Station / Wheel Group Assembly
Nominal Truck Payload Capacity 91.4 tonnes / 100 tons
Planetary Final Drive Ratio 6.87 : 1
Differential Gear Ratio 2.74 : 1
Total Rear Drive Reduction Ratio 18.83 : 1 (Differential + Planetary Final Drives)
Standard Mining Tire/Rim Fitment 27.00R49 (E4)
Braking System Oil-Cooled Multiple Disc (Rear Retarding & Service Brakes)
Application Rear Drive Wheel Stations & Front Steering Wheel Stations