Caterpillar 785G (Tier 4) Rock Truck
Dimensions
Dimensions (All Dimensions Are Approximate. Msd Ii Body, 33r51 Tires, Unloaded Machine.)
Overall Length
39.23ft in
Ground Clearance
3.29ft in
Dump Clearance
3.7ft in
Engine Guard Clearance
3.41ft in
Front Canopy Height
19.8ft in
Height - Top Of Rops
17.09ft in
Inside Body Depth - Maximum
9.15ft in
Inside Body Length
27.29ft in
Inside Body Width
19.72ft in
Loading Height - Empty
17.39ft in
Operating Width
24.72ft in
Outside Body Width
22ft in
Overall Body Length
39.32ft in
Overall Canopy Width
24.81ft in
Overall Height - Body Raised
39.48ft in
Overall Tire Width
20.59ft in
Rear Axle - Clearance
3.25ft in
Rear Axle - Tail
12.56ft in
Rear Sidewall Height
2.87ft in
Centerline Front Tire Width
15.91ft in
Wheel Base
17ft in
Centerline Of Rear Dual Tire Width
14.06ft in
Specifications
Body
Standard Dual Slope Weight
51892lb
Standard Dual Slope Volume (Sae 2:1)
102yd3
Standard Msd Weight
46711lb
Standard Msd Volume (Sae 2:1)
130yd3
Note (1)
Body weight only. Does not include liners.
Note (2)
Contact your local Cat dealer for site specific body recommendations.
Engine
Displacement
3573cu in
Bore
6.7in
Stroke
8.5in
Emissions
Meets U.S. EPA Tier 4 Final emissions standards.
Gross Power - Sae J1995
1600hp
Engine Model
Cat 3512E HD
Note (1)
Power rating conditions: At 1,650 rpm rated speed based on SAE J1995:2014 standard air inlet conditions of 25 degrees C (77 degrees F) and 99 kPa (29.31 in Hg) dry barometric pressure. Based on fuel of 35 degrees API gravity (at 15.6 degrees C or 60 degrees F) having a LHV of 42 780 kJ/kg (18,390 Btu/lb) when used at 29 degrees C (84.2 degrees F).
Note (2)
No engine derating required up to 2987 m (9800 ft) altitude per standard conditions.
Note (3)
Selectable 1,450 hp configuration.
Gross Power - Sae J1995:2014
1600hp
Transmission
Reverse
6.8 mile/h
Forward - 1
7.5mph
Forward - 2
10.2mph
Forward - 3
13.8mph
Forward - 4
18.6mph
Forward - 5
25.2mph
Forward - 6
34mph
Steering
Steering Standards
ISO 5010:2007
Transmission
Note
Maximum travel speeds with standard 33.00-R51 tires.
Steering
Steering Angle
36degrees
Turning Diameter - Iso 7457:1997 (33.00r51 Tires)
97.8ft in
Machine Clearance Diameter - Iso 7457:1997 (33.00r51 Tires)
109ft in
Transmission
Total Final Drive Reduction Ratio
22.75:1
Tires
Standard Tire
33.00R51 (E3 and E4)
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.
Optional Tire
36.00R51 (Michelin and Bridgestone)
Body Hoists
Body Raise Time - High Idle
15.2 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.
Body Lower Time - Float High Idle
15.9 s
Body Lower Time - Float Low Idle
16.2 s
Body Power Down- High Idle
15.9 s
Operating Specifications
Note (1)
GMW depends on tire selection. Consult your tire manufacturer for maximum loaded top speed.
Note (2)
Refer to the Cat Mining Truck 10/10/20 Overload Policy (AEXQ0250) for maximum gross machine weight limitations.
Nominal Payload Capacity
292000lb
Gross Machine Operating Weight (Gmw) (33r51 Tires)
550000lb
Nominal Payload Capacity (36.00r51 Tires)*
296000lb
Gross Machine Operating Weight (Gmw) (36r51 Tires)
564000lb
Nominal Payload Capacity (33.00r51 Tires)*
292000lb
Note (3)
*Includes standard liners and MSD II (Mine Specific Design) body.
Service Refill Capacities
Cooling System
100gal
Differential - Final Drives
139gal
Steering Tank
29gal
Fuel Tank
410gal
Torque Converter - Transmission System - Including Sump
46gal
Brake Hoist System - Includes Tank
160gal
Def Tank
36gal
Engine Crankcase
54gal
Brake/Hydraulic Tank
135gal
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.
Steering System - Includes Tank
45gal
Weight Distributions - Approximate
Front Axle - Empty
48%
Rear Axle - Empty
52%
Front Axle - Loaded - Target
33%
Rear Axle - Loaded - Target
67%
Weights - Approximate
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.
Body Weight Range
21 275 kg-30 623 kg (46,903 lb-67,512 lb)
Empty Operating Chassis Weight
186661lb
Rops
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.
Sound
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 - Operator Sound Level (Iso 6396:2008)
75 dB(A)
Cooling Fan Drive - Optional Clutch - Machine Sound Level (Iso 6395:2008)
120 dB(A)
Suspension
Cylinder Stroke - Front
12.6in
Cylinder Stroke - Rear
6.5in
Braking System
Standards
ISO 3450:2011
Brake Surface - Rear
13908in2
Note
Oil cooled four corner hydraulic actuated disc brakes.
Brake Surface - Front
9487in2
