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770 (07)
Off-Highway Trucks
Built for efficient material movement in construction and quarry applications, the Cat® 770 helps improve productivity with an engine speed of 1,800 rpm, a 38-tonnes target payload, and reliable hauling performance. When paired with Cat 986, 987, or 988 Wheel Loaders or Cat 374 Hydraulic Excavators, it delivers safe, dependable performance across a range of hauling environments.
Engine Model
Cat® C15
Rated Engine Speed
1800 r/min/1800 r/min
Gross Power - SAE J1995:2014
511 hp/381 kW
Net Power - SAE J1349:2011
483 hp/360 kW
Key Features
PRODUCTIVITY 
OPERATOR COMFORT
SAFETY
EFFICIENCY
APPLICATION
SERVICEABILITY
TECHNOLOGY
Specifications
Metric
|
Imperial
Engine 
Engine Model
Cat® C15
Rated Engine Speed
1800 r/min
1800 r/min
Gross Power - SAE J1995:2014
511 hp
381 kW
Net Power - SAE J1349:2011
483 hp
360 kW
Net Power - ISO 9249
488 hp
364 kW
Net Power - 80/1269/EEC
489 hp
365 kW
Engine Power - ISO 14396
506 hp
377 kW
Net Torque - SAE J1349
1682 ft-lb
2280 N·m
Number of Cylinders
6
Bore
5.4 in
137 mm
Stroke
6.7 in
171 mm
Displacement
927.6 in³
15.2 l
Note (1)
Power rating applies at 1,800 rpm when tested under the specified condition for the specified standard.
Note (2)
Ratings based on SAE J1995 standard air conditions of 25° C (77° F) and 100 kPa (29.61 Hg) barometer. Power based on fuel having API gravity of 35 at 16° C (60° F) and an LHV of 42 780 kJ/kg (18,390 BTU/lb) when engine used at 30° C (86° F).
Note (3)
No engine derating required up to 3000 m (9,843 ft) altitude.
Note (4)
Meets China Nonroad Stage III emission standards equivalent to Tier 3 or Tier 2.
Weights - Approximate
Target Gross Machine Operating Weight
157000 lb
71214 kg
Chassis Weight
55984 lb
25378 kg
Body Weight
17447 lb
7914 kg
Note (1)
Chassis weight with 100% fuel, hoist, body mounting group, rims and tires.
Note (2)
Body weight is the standard dual slope body with no liner and will vary depending on configuration.
Operating Specifications
Nominal Payload Class (100%)
41.2 Sh Ton
38.6 t
Top Speed - Loaded
45.8 mile/h
73.7 km/h
Target Payload (100%)
41.2 Sh Ton
38.0 ton (US)
Body Capacity - SAE 2:1
32.9 yd³
25.2 m³
Top Speed - Loaded*
45.8 mile/h
73.7 km/h
Note
Refer to the Caterpillar 10/10/20 Overload Policy for maximum gross machine weight limitations.
Note (1)
Capacity with dual slope body with no liner.
Note (2)
*ISO 6483:1980
Transmission
Forward - 1
7.4 mile/h
11.9 km/h
Forward - 2
10.1 mile/h
16.3 km/h
Forward - 3
13.7 mile/h
22.1 km/h
Forward - 4
18.4 mile/h
29.6 km/h
Forward - 5
25 mile/h
40.2 km/h
Forward - 6
33.7 mile/h
54.2 km/h
Forward - 7
45.7 mile/h
73.5 km/h
Reverse
9.7 mile/h
15.6 km/h
Note
Maximum travel speeds with standard 18.00R33 (E4) tires.
Final Drives
Differential Ratio
2.12:1
Planetary Ratio
4.80:1
Total Reduction Ratio
10.176:1
Brakes
Brake Surface - Front
216 in²
1395 cm²
Brake Surface - Rear
6235 in²
40225 cm²
Brake Standards
ISO 3450:2011
Body Hoists
Pump Flow - High Idle
109 gpm
413 L/min
Relief Valve Setting - Raise
2750 psi
18950 kPa
Relief Valve Setting - Lower
500 psi
3450 kPa
Body Lower Time - Float
10.0 seconds (approx.)
Body Raise Time - High Idle
8 seconds (approx.)
Capacity - Dual Slope - 100% Fill Factor
Struck
23.01 yd³
17.6 m³
Heaped (SAE 2:1)*
32.9 yd³
25.2 m³
Note (1)
*ISO 6483:1980
Capacity - Flat Floor - 100% Fill Factor
Struck
23.01 yd³
17.6 m³
Heaped (SAE 2:1)*
32.9 yd³
25.2 m³
Note (1)
*ISO 6483:1980
Weight Distributions - Approximate
Front Axle - Empty
52 %
52 %
Front Axle - Loaded
34 %
34 %
Rear Axle - Empty
48 %
48 %
Rear Axle - Loaded
66 %
66 %
Suspension
Empty Loaded Cylinder Stroke Front
9.2 in
234 mm
Empty Loaded Cylinder Stroke Rear
5.9 in
149 mm
Rear axle - Oscillation
8.9 °
8.9 °
Service Refill Capacities
Fuel Tank
140 gal (US)
795 l
Cooling System
40.6 gal (US)
154 l
Crankcase
24 gal (US)
90 l
Differential - Final Drives
37 gal (US)
140 l
Steering Tank
9.5 gal (US)
36 l
Steering System - Including Tank
14 gal (US)
54 l
Brake/Hoist Hydraulic Tank
46.5 gal (US)
176 l
Brake Hoist System
85 gal (US)
322 l
Torque Converter - Transmission System
16.1 gal (US)
61 l
Tires
Standard Tire
18.00R33 (E4)
Note (1)
Productive capabilities of the 770G truck are such that, under certain job conditions, TKPH (TMPH) capabilities of standard or optional tires could be exceeded and, therefore, limit production.
Note (2)
Caterpillar recommends the customer evaluates all job conditions and consults the tire manufacturer for proper tire selection.
ROPS
ROPS/FOPS Standards
Standards
ROPS Standards
ROPS (Rollover Protective Structure) for cab offered by Caterpillar meets ISO 3471:2008 ROPS criteria.
FOPS Standards
FOPS (Falling Objects Protective Structure) meets ISO 3449:2005 Level II FOPS criteria.
Sound
Sound Standards
Standards
Note (1)
The dynamic operator sound pressure level is 79.5 dB(A) when “ISO R396:2008” is used to measure the value for an enclosed cab. The cab was properly installed and maintained. The test was conducted with the cab doors and the cab windows closed.
Note (2)
Hearing protection may be needed when operating with an open operator station and cab (when not properly maintained or doors/windows open) for extended periods or in a noisy environment.
Steering
Steering Standards
ISO 5010:2007
Steer Angle
40.5 °
40.5 °
Turning Diameter - Front
57.7 ft
17.6 m
Turning Circle - Clearance Diameter
66.6 ft
20.3 m
Equipment
Standard Equipment
Optional Equipment
