Cat’s 770 40-ton payload sets the standard for haul performance in construction and quarry industries. We’ve taken the best of our rugged, dependable Off-Highway Truck lineup and integrated it with technologies that help our environment, make operators more productive, and dramatically improve the economics of haul fleets. An optimal pass match for the 770 is the Cat 986K or 988K Wheel Loader or the 374F or 390F Hydraulic Excavators. No matter your business type, the 770 is designed to help you move materials safely and efficiently through every haul.
Engine
| Engine Model |
Cat® C15 ACERT™ |
| Rated Engine Speed |
1800 r/min |
| Gross Power - SAE J1995 |
511 HP |
| Net Power - SAE J1349 |
483 HP |
| Net Power - ISO 9249 |
476 HP |
| Net Power - 80/1269/EEC |
489 HP |
| Engine Power - ISO 14396 |
377 kW |
| Net Torque - SAE J1349 |
2280 N·m |
| Number of Cylinders |
6 |
| Bore |
137 mm |
| Stroke |
171 mm |
| Displacement |
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 U.S. EPA Tier 3 or U.S. EPA Tier 2. |
Weights - Approximate
| Target Gross Machine Operating Weight |
71214 kg |
| Chassis Weight |
24900 kg |
| Body Weight |
7665 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%) |
38.6 t |
| Top Speed - Loaded |
73.5 km/h |
| Target Payload (100%) |
38.6 ton (US) |
| Body Capacity - SAE 2:1 |
25.2 m³ |
| Top Speed - Loaded* |
73.5 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 |
11.9 km/h |
| Forward - 2 |
16.3 km/h |
| Forward - 3 |
22.1 km/h |
| Forward - 4 |
29.6 km/h |
| Forward - 5 |
40.2 km/h |
| Forward - 6 |
54.2 km/h |
| Forward - 7 |
73.5 km/h |
| Reverse |
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 |
10.18:1 |
Brakes
| Brake Surface - Front |
1395 cm² |
| Brake Surface - Rear |
40225 cm² |
| Brake Standards |
ISO 3450:1996 |
Body Hoists
| Pump Flow - High Idle |
448 l/min |
| Relief Valve Setting - Raise |
18950 kPa |
| Relief Valve Setting - Lower |
3450 kPa |
| Body Power Down - High Idle |
10.0 seconds (approx.) |
| Body Lower Time - Float |
10.0 seconds (approx.) |
| Body Raise Time - High Idle |
7.5 seconds (approx.) |
Capacity - Dual Slope - 100% Fill Factor
| Struck |
17.6 m³ |
| Heaped (SAE 2:1)* |
25.2 m³ |
| Note (1) |
*ISO 6483:1980 |
Capacity - Flat Floor - 100% Fill Factor
| Struck |
17.6 m³ |
| Heaped (SAE 2:1)* |
25.2 m³ |
| Note (1) |
*ISO 6483:1980 |
Weight Distributions - Approximate
| Front Axle - Empty |
51.9 % |
| Front Axle - Loaded |
34.5 % |
| Rear Axle - Empty |
48.1 % |
| Rear Axle - Loaded |
65.5 % |
Suspension
| Empty Loaded Cylinder Stroke Front |
234 mm |
| Empty Loaded Cylinder Stroke Rear |
149 mm |
| Rear axle - Oscillation |
8.9 ° |
Service Refill Capacities
| Fuel Tank |
530 l |
| Cooling System |
125 l |
| Crankcase |
38 l |
| Differential - Final Drives |
180 l |
| Steering Tank |
55 l |
| Steering System - Including Tank |
87 l |
| Brake/Hoist Hydraulic Tank |
145 l |
| Brake Hoist System |
227 l |
| Torque Converter - Transmission System |
64 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 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 ° |
| Turning Diameter - Front |
17.6 m |
| Turning Circle - Clearance Diameter |
20.3 m |
30 Mins