New CAT Equipment

789D Mining Truck

Caterpillar's exclusive design ownership provides advantages by creating a total hauling unit that delivers the best integration of high production, availability, and payload in combination with low operating cost and long life. The Cat® 789D continues the tradition of Caterpillar's proven 789 Truck with high productivity and lowest in class cost per ton.

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    Product Specs

    Engine

    Gross Power - SAE J1995 2100 HP
    Engine Model Cat® 3516C HD
    Rated Net Power - ISO 9249 1969 HP
    Bore 6.7 in
    Stroke 8.3 in
    Displacement 4766 in³
    Net Power 1969 HP
    Gross Power 2100 HP

    Optional Engine

    Engine Model Cat® 3516B EUI
    Gross Power 1900 HP
    Rated Net Power - ISO 9249 1791 HP
    Bore 6.7 in
    Stroke 7.5 in
    Displacement 4211 in³

    Weights - Approximate

    Rated Gross Machine Weight 715000 lb
    Chassis Weight 218542 lb
    Nominal Rated Payload 210 ton (US)

    Body - Dual Slope

    Body Weight 60684 lb

    Operating Specifications

    Standard MSD Body (SAE 2:1) 170 yd³
    Standard X Body (SAE 2:1) 161 yd³
    Standard Dual Slope Body (SAE 2:1) 141 yd³
    Standard Combi Body (SAE 2:1) 200 yd³
    Standard Gateless Coal Body (SAE 2:1) 250 yd³

    Transmission

    Forward - 1 7.8 mile/h
    Forward - 2 10.6 mile/h
    Forward - 3 14.4 mile/h
    Forward - 4 19.4 mile/h
    Forward - 5 26.3 mile/h
    Forward - 6 35.5 mile/h
    Reverse 7.3 mile/h
    Top Speed - Loaded 35.5 mile/h

    Final Drives

    Differential Ratio 2.35:1
    Planetary Ratio 10.83:1
    Total Reduction Ratio 25.46:1

    Suspension

    Effective Cylinder Stroke - Front 4 in
    Effective Cylinder Stroke - Rear 3.5 in
    Rear axle - Oscillation ±5.6°

    Brakes

    Brake Surface - Front 12662 in²
    Brake Surface - Rear 18024 in²
    Standards SAE J1473 OCT90 ISO 3450:1996

    Body Hoists

    Pump Flow - High Idle 193 gal/min
    Relief Valve Setting - Raise 2500 psi
    Body Raise Time - High Idle 18.9 s
    High Idle Body Lower Time - Float 17.3 s
    High Idle Body Lower Time - Power 15.6 s

    Weight Distributions - Approximate

    Front Axle - Empty 46 %
    Rear Axle - Empty 54 %
    Front Axle - Loaded 33 %
    Rear Axle - Loaded 67 %
    Note Weight distributions optimized with Cat body.

    Tires

    Standard Tires 37.00-R57
    Optional Tires 40.00-R57

    Service Refill Capacities

    Fuel Tank - Standard 550 gal (US)
    Fuel Tank - Optional 1000 gal (US)
    Cooling System 192 gal (US)
    Crankcase 77 gal (US)
    Differential - Final Drives 154 gal (US)
    Steering System 50 gal (US)
    Brake Hoist System 241 gal (US)
    Transmission Tank 20 gal (US)

    ROPS

    ROPS Standards Standards

    Sound

    Sound Standards Standards

    Steering

    Steering Standards SAE J1511 OCT90 ISO 5010:1992
    Steering Angle 36.07 °
    Turning Diameter - Front Wheel 90.32 ft
    Vehicle Clearance - Turn Circle 99.18 ft