Caterpillar 785C Rock Truck
Dimensions
Dimensions
Overall Length
36.25ft in
Overall Width
20.6ft in
Overall Height
19ft in
Wheelbase
17ft in
Ground Clearance
3.24ft in
Dump Height
36.83ft in
Dump Ground Clearance
4.21ft in
Dump
Dump Angle
49degrees
Load Capacity - Struck
96yd3
Load Capacity - Heaped
119yd3
Rated Payload
300000lb
Lower Time
15.9sec
Raise Time
15.2sec
Specifications
Engine
Number Of Cylinders
16
Engine Make
2236
Engine Model
3512B-EUI
Gross Power
1451hp
Net Power
1348hp
Power Measured @
1750rpm
Aspiration
Turbocharged
Displacement
3158cu in
Torque Rise
23%
Bore
6.7in
Stroke
7.5in
Net Power - Cat
1348hp
Net Power - Iso 9249
1348hp
Net Power - Sae J1349
1348hp
Net Power - 80/1269/Eec
1348hp
Gross Power - Sae J1995
1450hp
Engine Model
Cat 3512B-EUI
Operational
Fuel Capacity
500gal
Cooling System Fluid Capacity
100gal
Engine Oil Capacity
24gal
Diff And Final Drive Fluid Capacity
115gal
Steering System Fluid Capacity
31gal
Brake/Hoist System Fluid Capacity
89gal
Hydraulic System Fluid Capacity
169.4gal
Operating Voltage
24V
Alternator Supplied Amperage
75amps
Tire Size
33.00-R51 tires
Transmission
Transmission Type
Six-speed planetary
Number Of Gears - Forward
6
Number Of Gears - Reverse
1
Max Speed
34mph
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
SAE J1511 OCT90 ISO 5010:1992
Weights
Empty Weight
225200lb
Loaded Weight
550000lb
Weight Distribution Front - Empty
47%
Weight Distribution Rear - Empty
53%
Weight Distribution Front - Loaded
33%
Weight Distribution Rear - Loaded
67%
Tires
Standard Tires
33.00-R51 (E4) 33.00-R51 (E3)
Brakes
Brake Surface - Front
9497in2
Brake Surface - Rear
13908in2
Standards
SAE J1473 OCT90 ISO 3450-1985
Body Hoists
Pump Flow - High Idle
198 gal/min
Relief Valve Setting - Raise
2500 psi
Body Raise Time - High Idle
15.2 s
Body Lower Time - Float
16.2 s
Body Power Down - High Idle
15.9 s
Body Lower Time - High Idle
15.9 s
Final Drives
Planetary Ratio
10.83:1
Differential Ratio
2.10:1
Total Reduction Ratio
22.75:1
Operating Specifications
Top Speed - Loaded
34mph
Raise Time
15.2 s
Lower Time
15.9 s
Steer Angle
36degrees
Turning Diameter - Front
90.2ft in
Nominal Payload Capacity
300000lb
Machine Clearance Turning Diameter
100.4ft in
Sae (2:1) Capacity
102yd3
Service Refill Capacities
Cooling System
100gal
Differential - Final Drives
115gal
Steering Tank
24gal
Steering System - Including Tank
31gal
Brake Hoist System - Includes Tank
169gal
Crankcase
54gal
Brake/Hoist Hydraulic Tank
89gal
Torque Converter/Transmission System - Including Sump
65.6gal
Fuel Tank - Standard
500gal
Weight Distributions - Approximate
Front Axle - Empty
47 %
Front Axle - Loaded
33 %
Rear Axle - Empty
53 %
Rear Axle - Loaded
67 %
Weights - Approximate
Chassis Weight
164134lb
Gross Machine Operating Weight
550000lb
Operating Weight - Empty - Flat Floor Body
225200lb
Operating Weight - Empty - Dual-Slope Body
211035lb
Capacity - Dual Slope - 100% Fill Factor
Struck
74yd3
Heaped (Sae 2:1)
102yd3
Capacity - Flat Floor - 100% Fill Factor
Struck
96yd3
Heaped (Sae 2:1)
119yd3
Rops
Rops Standards
SAE J1040 APR88 ISO 3471:1994
Sound
Sound Standards
ANSI/SAE J1166 MAY90 SAE J88 APR95
Suspension
Effective Cylinder Stroke - Front
12.1in
Effective Cylinder Stroke - Rear
6.5in
Approximate Weights - Dual Slope
Body
46865lb
Chassis
164134lb
Front Axle - Empty
47 %
Front Axle - Loaded
33 %
Rear Axle - Empty
53 %
Rear Axle - Loaded
67 %
Gross Weight - Empty
211035lb
Approximate Weights - Flat Floor
Body
56630lb
Chassis
164134lb
Front Axle - Empty
47 %
Front Axle - Loaded
33 %
Rear Axle - Empty
53 %
Rear Axle - Loaded
67 %
Gross Weight - Empty
225200lb
Standard Liner
4400lb
