785G Mining Truck

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Weights - Approximate

Nominal Rated Payload
152 ton (US)
Chassis Weight
186661 lb
Body Weight - MSD
46738 lb
Nominal Rated Payload (33.00R51 Tires)
152 ton (US)
Nominal Rated Payload (36.00R51 Tires)
154 ton (US)
Rated Gross Machine Weight (33.00R51 tires)
564000 lb
Rated Gross Machine Weight (36.00R51 tires)
550000 lb
Note (1)
Chassis weight includes standard mandatory attachments, 33R51 tires, all operating fluid levels full and 100% fuel.
Note (2)
Estimated weight of debris is not included in operating chassis weight.
Note (3)
Body weight varies depending on body selection and configuration.
Note (4)
Refer to the Cat Mining Truck 10/10/20 Overload Policy (AEXQ0250) for maximum gross machine weight limitations.


Engine Model
Cat® 3512E
Gross Power - SAE J1995
1600 HP
6.7 in
8.5 in
3573 in³
Note (1)
Power rating conditions: – At 1,650 rpm rated speed based on SAE J1995:2014 standard air inlet conditions of 25° C (77° F) and 99 kPa (29.31 in Hg) dry barometric pressure. – Based on fuel of 35° API gravity (at 15.6° C or 60° F) having a LHV of 42 780 kJ
Note (2)
No engine derating required up to 2987 m (9800 ft) altitude per standard conditions.
Note (3)
Selectable 1,450 hp configuration.
Meets U.S. EPA Tier 4 Final / EU Stage V emissions standards.

Body Hoists

Body Raise Time - High Idle
15.2 s
Body Lower Time - Float High Idle
15.9 s
Body Power Down- High Idle
15.9 s
Body Lower Time - Float Low Idle
16.2 s
Note (1)
Twin, two-stage hydraulic cylinder mounted outside main frame; double-acting cylinders in second stage.
Note (2)
Power raise in both stages; power down in second stage.
Note (3)
Automatic body lower modulation reduces impact on frame.

Weight Distributions - Approximate

Front Axle - Empty
Rear Axle - Empty
Front Axle - Loaded - Target
Rear Axle - Loaded - Target
Weight distributions optimized with Cat body.

Service Refill Capacities

Fuel Tank
410 gal (US)
DEF Tank
36 gal (US)
Cooling System
100 gal (US)
Engine Crankcase
54 gal (US)
Differential - Final Drives
139 gal (US)
Steering Tank
29 gal (US)
Steering System - Includes Tank
45 gal (US)
Brake/Hydraulic Tank
135 gal (US)
Brake Hoist System - Includes Tank
160 gal (US)
Torque Converter - Transmission System - Including Sump
46 gal (US)
Note (1)
Separate steering system and separate torque converter/transmission system prevents cross contamination.
Note (2)
Contact your local Cat dealer for DEF infrastructure recommendations.


ROPS Standards
ROPS (Rollover Protective Structure) for cab offered by Caterpillar meets ISO 3471:2008 ROPS and ISO 13459:2012 criteria.
FOPS Standards
FOPS (Falling Objects Protective Structure) meets ISO 3449:2005 and ISO 13459:2012 Level II criteria.


Steering Standards
ISO 5010:2007
Turning Diameter - ISO 7457:1997 (33.00R51 tires)
97.75 ft
Machine Clearance Diameter - ISO 7457:1997 (33.00R51 tires)
108.92 ft
Steering Angle
36 degrees


Standard Dual Slope Weight
51892 lb
Standard Dual Slope Volume (SAE 2:1)
102 yd³
Standard MSD Weight
46711 lb
Standard MSD Volume (SAE 2:1)
130 yd³
Note (1)
Body weight only. Does not include liners.
Note (2)
Contact your local Cat dealer for site specific body recommendations.


Cooling Fan Drive - Direct Drive - Operator Sound Level (ISO 6396:2008)
77 dB(A)
Note (1)
Testing done per specified standard work cycle procedures and conditions with 50% HVAC blower fan speed. Optional clutch control fan measurement done at 70% of maximum engine cooling fan speed.
Note (2)
Hearing protection may be needed when operating with an open operator station/cab (when not properly maintained or doors/windows open) for extended periods or in a noisy environment.
Cooling Fan Drive - Direct Drive - Machine Sound Level (ISO 6395:2008)
121 dB(A)
Cooling Fan Drive - Optional Clutch - Machine Sound Level (ISO 6395:2008)
120 dB(A)
Cooling Fan Drive - Optional Clutch - Operator Sound Level (ISO 6396:2008)
75 dB(A)

Dimensions (All dimensions are approximate. MSD II Body, 33R51 tires, unloaded machine.)

Height - Top of ROPS
17.09 ft
Overall Body Length
39.32 ft
Inside Body Length
27.29 ft
Overall Length
39.23 ft
Wheel Base
17 ft
Rear Axle - Tail
12.56 ft
Ground Clearance
3.29 ft
Dump Clearance
3.7 ft
Loading Height - Empty
17.39 ft
Rear Sidewall Height
2.87 ft
Inside Body Depth - Maximum
9.15 ft
Overall Height - Body Raised
39.48 ft
Operating Width
24.72 ft
Centerline Front Tire Width
15.91 ft
Engine Guard Clearance
3.41 ft
Overall Canopy Width
24.81 ft
Outside Body Width
22 ft
Inside Body Width
19.72 ft
Front Canopy Height
19.8 ft
Rear Axle - Clearance
3.25 ft
Centerline of Rear Dual Tire Width
14.06 ft
Overall Tire Width
20.59 ft


Forward - 1
7.5 mile/h
Forward - 2
10.2 mile/h
Forward - 3
13.8 mile/h
Forward - 4
18.6 mile/h
Forward - 5
25.2 mile/h
Forward - 6
34 mile/h
6.8 mile/h
Total Final Drive Reduction Ratio
Top Speed - Loaded
34 mile/h
Maximum travel speeds with standard 33.00-R51 tires.


Cylinder Stroke - Front
12.6 in
Cylinder Stroke - Rear
6.5 in

Braking System

Brake Surface - Front
9487 in²
Brake Surface - Rear
13908 in²
ISO 3450:2011
Oil cooled four corner hydraulic actuated disc brakes.


Standard Tire
33.00R51 (E3 and E4)
Optional Tire
36.00R51 (Michelin and Bridgestone)
Note (1)
Productive capabilities of the 785G truck are such that, under certain job conditions, TKPH (TMPH) capabilities could be exceeded and, therefore, limit production.
Note (2)
Caterpillar recommends the customer evaluate all job conditions and consult the tire manufacturer for proper tire selection.