US
Metric

Overview

The 785D Mining Truck is engineered for performance, designed for comfort, and built to last. Developed specifically for high production mining and construction applications, the 785D Mining Truck keeps material moving at high volume to lower your cost-per-ton. Rugged construction creates a durable machine. Easy maintenance procedures ensure high reliability and  long life with low operating costs.

Operating Specifications

Top Speed - Loaded
34.00 mph
54.80 km/h
Steer Angle
36.00 Degrees
36.00 Degrees
Machine Clearance Turning Diameter
108.90 ft
33.20 m
Maximum Target Payload
157.00 ton (US)
143.00 ton (US)
Minimum Target Payload
144.00 ton (US)
131.00 ton (US)
Target Payload - Dual Slope*
146.00 ton (US)
133.00 ton (US)
Turning Diameter - Front
97.70 ft
29.80 m

Engine

Engine Model
Cat® 3512C HD
Gross Power - SAE J1995
1450.00 hp
1082.00 kW
Rated Power
1450.00 hp
1082.00 kW
Net Power - Cat
1348.00 hp
1005.00 kW
Net Power - ISO 9249
1348.00 hp
1005.00 kW
Net Power - 80/1269/EEC
1348.00 hp
1005.00 kW
Torque Rise
23.00 %
23.00 %
Bore
6.70 in
170.00 mm
Stroke
8.40 in
215.00 mm
Displacement
3573.60 in3
58.56 L
Net Power
1348.00 hp
1005.00 kW
Net Power - SAE J1349
1348.00 hp
1005.00 kW

Weights - Approximate

Gross Machine Operating Weight (GMW)
550000.00 lb
249476.00 kg
Body Weight Range
20 831 - 30 623 kg 45,924 - 67,512 lb
Minimum/Maximum Operating Chassis Weight Range (OCW)
83 304 - 84 668 kg 183,654 - 186,661 lb
Minimum/Maximum Operating Chassis Weight Range Empty (EOMW)
106 218 - 117 597 kg 234,170 - 259,257 lb

Transmission

Forward 1
7.50 mph
12.10 km/h
Forward 2
10.20 mph
16.30 km/h
Forward 3
13.80 mph
22.20 km/h
Forward 4
18.60 mph
29.90 km/h
Forward 5
25.20 mph
40.60 km/h
Forward 6
34.00 mph
54.80 km/h
Reverse
6.80 mph
11.00 km/h

Final Drives

Differential Ratio
2.10:1
Planetary Ratio
10.83:1
Total Reduction Ratio
22.75:1

Suspension

Effective Cylinder Stroke - Front
12.10 in
306.50 mm
Effective Cylinder Stroke - Rear
6.50 in
165.00 mm

Brakes

Brake Surface - Rear
13908.00 in2
89729.00 cm2
Standards
SAE J1473 OCT90 ISO 3450-1985
Brake Surface - Front
9497.00 in2
61270.00 cm2

Body Hoists

Pump Flow - High Idle
198.00 gal/min
750.00 L/min
Relief Valve Setting - Raise
2500.00 psi
17238.00 kPa
Body Raise Time - High Idle
15.20 Seconds
15.20 Seconds
Body Lower Time - Float
16.20 Seconds
16.20 Seconds
Body Power Down - High Idle
15.90 Seconds
15.90 Seconds
Body Lower Time - High Idle
15.90 Seconds
15.90 Seconds

Service Refill Capacities

Fuel Tank (standard)
500.00 gal
1893.00 L
Cooling System
100.00 gal
379.00 L
Crankcase
54.00 gal
204.00 L
Steering Tank
24.00 gal
90.00 L
Steering System (Includes Tank)
31.00 gal
117.00 L
Brake/Hoist Hydraulic Tank
89.00 gal
337.00 L
Brake/Hoist System (Includes Tank)
169.00 gal
641.00 L
Differential and Final Drives
115.00 gal
436.00 L
Torque Converter/Transmission System - Including Sump
65.51 gal (US)
248.00 l

Body - X

Body Weight
55468.00 lb
25160.00 kg
Heaped (SAE 2:1)
111.00 yd³
85.00 m³

Weight Distributions - Approximate

Front Axle - Empty*
45-46%
Front Axle - Loaded - Target
33.00 %
33.00 %
Rear Axle - Empty*
54-55%
Rear Axle - Loaded - Target
67.00 %
67.00 %

Tires

Standard Tires
33.00-R51 (E3 & E4)

Sound

Sound Standards
ANSI/SAE J1166 MAY90 SAE J88 APR95

Steering

Steering Standards
SAE J1511 OCT90 ISO 5010:1992

Body - Dual Slope

Body Weight
49150.00 lb
22295.00 kg
Heaped (SAE 2:1)
102.00 yd³
78.00 m³

ROPS

ROPS Standards
SAE J1040 APR88 ISO 3471:1994

Engine

Engine Model
Cat® 3512C HD
Gross Power - SAE J1995
1450.00 HP
1082.00 kW
Rated Power
1450.00 HP
1082.00 kW
Net Power - Cat
1348.00 HP
1005.00 kW
Net Power - ISO 9249
1348.00 HP
1005.00 kW
Net Power - 80/1269/EEC
1348.00 HP
1005.00 kW
Torque Rise
23.00 %
23.00 %
Bore
6.70 in
170.00 mm
Stroke
8.40 in
215.00 mm
Displacement
3573.60 in³
58.56 l
Net Power
1348.00 HP
1005.00 kW
Net Power - SAE J1349
1348.00 HP
1005.00 kW

Operating Specifications

Top Speed - Loaded
34.00 mile/h
54.80 km/h
Steer Angle
36.00 °
36.00 °
Turning Diameter - Front
97.70 ft
29.80 m

Final Drives

Differential Ratio
2.10:1
Planetary Ratio
10.83:1
Total Reduction Ratio
22.75:1

Transmission

Forward - 1
7.50 mile/h
12.10 km/h
Forward - 2
10.20 mile/h
16.30 km/h
Forward - 3
13.80 mile/h
22.20 km/h
Forward - 4
18.60 mile/h
29.90 km/h
Forward - 5
25.20 mile/h
40.60 km/h
Forward - 6
34.00 mile/h
54.80 km/h
Reverse
6.80 mile/h
11.00 km/h

Suspension

Effective Cylinder Stroke - Front
12.10 in
306.50 mm
Effective Cylinder Stroke - Rear
6.50 in
165.00 mm

Body Hoists

Pump Flow - High Idle
198.00 gal/min
750.00 l/min
Relief Valve Setting - Raise
2500.00 psi
17238.00 kPa
Body Raise Time - High Idle
15.20 s
15.20 s
Body Lower Time - Float
16.20 s
16.20 s
Body Power Down - High Idle
15.90 s
15.90 s
Body Lower Time - High Idle
15.90 s
15.90 s

Brakes

Brake Surface - Rear
13908.00 in²
89729.00 cm²
Standards
SAE J1473 OCT90 ISO 3450-1985
Brake Surface - Front
9497.00 in²
61270.00 cm²

Service Refill Capacities

Fuel Tank - Standard
500.00 gal (US)
1893.00 l
Cooling System
100.00 gal (US)
379.00 l
Crankcase
54.00 gal (US)
204.00 l
Steering Tank
24.00 gal (US)
90.00 l
Steering System - Including Tank
31.00 gal (US)
117.00 l
Brake/Hoist Hydraulic Tank
89.00 gal (US)
337.00 l
Brake Hoist System - Includes Tank
169.00 gal (US)
641.00 l
Differential - Final Drives
115.00 gal (US)
436.00 l

Tires

Standard Tires
33.00-R51 (E3 & E4)

ROPS

ROPS Standards
SAE J1040 APR88 ISO 3471:1994

Sound

Sound Standards
ANSI/SAE J1166 MAY90 SAE J88 APR95

Steering

Steering Standards
SAE J1511 OCT90 ISO 5010:1992
Features

Power Train - Engine

Power Train - Transmission

Engine/Power Train Integration

Structures/Suspension/Steering

Operator's Station

Cat Brake System

Truck Body Systems

Monitoring System

Safety

Sustainability

Serviceability

Customer Support

Sales Features

Power Train - Engine

The Cat® 3512C HD engine delivers high power and reliability.

Power Train - Transmission

Unmatched operating efficiency in all mining conditions.

Engine/Power Train Integration

Electronically optimizes overall truck performance.

Structures/Suspension/Steering

Rugged Cat designs are the backbone of the 785D mining truck’s durability.

Operator’s Station

Designed for operator safety and comfort, superior control and high productivity.

Cat Brake System

Superior control gives the operator confidence to focus on productivity.

Truck Body Systems

Caterpillar designed and built for the toughest mining applications.

Monitoring System

Vital machine health and payload data keeps the 785D performing.

Safety

Cat mining machines and systems: Safety is priority one.

Sustainability

A variety of features improve sustainability in areas of decreasing waste, extending component life and lowering emissions levels.

Serviceability

Less time spent on maintenance means more time on the haul roads.

Customer Support

Cat dealers have what it takes to keep mining haul trucks productive.
Standard Equipment
  • ELECTRICAL
    • Alarm, Back-up
    • Alternator (105 A)
    • Batteries, 93Ah, Low-maintenance, 12V (2)
    • Converter, 12V electrical
    • Electrical System, 24V, 15A
    • Lighting System
  • OPERATOR ENVIRONMENT
    • Air Conditioner
    • Ashtray/cigarette lighter
    • Coat hook
    • Diagnostic connection port
    • Dome courtesy light
    • Entertainment radio ready
    • Gauges/Indicators
    • Heater/defroster
    • Horn
    • Hoist body control, electric
    • Integrated Object Detection System
    • ROPS cab insulated/sound suppressed
    • Storage compartment
    • Seatbelt, 75 mm (3 in), retractable
    • Steering wheel, tilt, padded, telescopic
    • Sun visor
    • Tinted glass
    • Window, electric powered, operator
    • Windshield wiper, intermittent control and washer
  • POWER TRAIN
    • Cat 3512C HD-EUI diesel engine
    • Braking System
    • Transmission
  • OTHER STANDARD EQUIPMENT
    • Air Line Dryer (2)
    • Body Mounting Group
    • Auto lubrication system (Lincoln)
    • Dumping, Auxiliary Quick Connect for “Buddy Dumping”
    • Steering, Auxiliary Quick Connect for Towing
    • Continuous rear axle filtration
    • Diagonal stairway, 600 mm (24 in)
    • Driveline Operator Safety Guard
    • Fast-fill Fuel System
    • VIMS Dataport
    • Battery Disconnect
    • High speed crankcase oil change
    • Reservoirs (Separate)
    • S·O·SSM sample ports
    • Supplemental steering (automatic)
    • Tie Down Eyes
    • Tow Hooks, Front
    • Traction Control System
    • Vandalism Protection Locks
    • Vital Information Management System (VIMS) includes:
Optional Equipment
  • BODIES
    • Body, X
    • MSD II (Mine Specific Design)
    • Dual Slope
    • Custom Body Options
  • BODY EXTENSIONS
    • Tail
    • Wrap around
  • LINERS
    • Full-length liner
    • Tail extension wrap-around
  • OPERATOR ENVIRONMENT
    • Footrest, operator
    • Hose, cab clean-out
    • Vacuum, cab clean-out
  • POWER TRAIN
    • Pre-lube, engine
    • Oil renewal system
    • Oil cooler, rear axle
  • COLD WEATHER
    • Starting, Cold Weather
  • TIRES AND RIMS
    • Spare rims
  • INFORMATION MANAGEMENT
    • Control, Road Analysis (RAC)
  • SERVICE CENTER
    • Service Center, Wiggins
  • MISCELLANEOUS
    • Fire extinguisher, portable
    • Hub Odometer, Kilometers
    • Hub Odometer, Miles
    • Wheel Chocks
    • Heater, Diesel fuel