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798 AC Electric Drive Mining Truck
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Weights - Approximate |
| Nominal Rated Payload |
256 ton (US) |
410 ton (US) |
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| Rated Gross Machine Weight |
851000 lb |
1375000 lb |
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| Chassis Weight |
265639 lb |
453826 lb |
55948 lb |
| Body Weight |
67682 lb |
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17306 lb |
| Note (1) |
Consult your tire manufacturer for maximum tire load |
Consult your tire manufacturer for maximum tire load. |
Chassis weight with 100% fuel, hoist, body mounting group, rims, and tires. |
| Note (2) |
Chassis weight with full fuel and fluids, standard & mandatory attachments, hoist, body mounting group, rims, and tires. |
Chassis weight with 100% fuel, hoist, body mounting group, rims, and tires. |
Body weight is the standard Dual Slope body with no liner and will vary depending on configuration. |
| Note (3) |
Refer to the Cat Mining Truck 10/10/20 Overload Policy for maximum gross machine weight limitations. |
Body weight varies depending on how body is equipped. |
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| Body Weight Range |
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38 833 - 43 275 kg (85,611 - 95,406 lb) |
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| Target Gross Machine Operating Weight |
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157000 lb |
| Target Gross Machine Weight |
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157000 lb |
Engine |
| Gross Power - SAE J1995 |
2650 HP |
3500 HP |
515 HP |
| Net Power - SAE J1349 |
2478 HP |
3405 HP |
477 HP |
| Engine Model |
Cat® C175-16 |
Cat® C175-16 |
Cat® C15 |
| Rated Speed |
1750 r/min |
1800 r/min |
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| Emissions |
Fuel Optimized |
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Meets U.S. EPA Tier 4 and EU Stage V emission standards. |
| Bore |
6.9 in |
6.9 in |
5.4 in |
| Stroke |
8.7 in |
8.7 in |
6.7 in |
| Displacement |
5187 in³ |
5187 in³ |
927.6 in³ |
| Note (1) |
Net Power advertised is the power available at the flywheel when the engine is equipped with air intake system, exhaust system, and alternator. |
Net Power advertised is the power available at the flywheel when the engine is equipped with air intake system, exhaust system, and alternator. |
Power rating applies at 1,700 rpm when tested under the specified condition for the specified standard. |
| Note (2) |
EPA Tier 4 Final / EU Stage V available for applicable markets. |
U.S. EPA Tier 4 Final / EU Stage V available for applicable markets. |
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). |
| Optional Gross Power - SAE J1995 |
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3100 HP |
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| Emissions Rating |
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Fuel Optimized |
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| Note (3) |
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Additional fuel optimized selectable power ratings: 2312 kW / 3,100 hp |
No engine derating required up to 3000 m (9,843 ft) altitude. |
| Rated Engine Speed |
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1700 r/min |
| Net Power - ISO 9249 |
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477 HP |
| Net Power - 80/1269/EEC |
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489 HP |
| Net Power - ISO 14396 |
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508 HP |
| Net Torque - SAE J1349 |
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1834 ft·lbf |
| Number of Cylinders |
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6 |
| Note (4) |
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Meets Japan Small Volume Exemption. |
Tires |
| Standard Tires |
40.00 R57 |
59/80 R63 |
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| Rims |
29" or 32" |
44" x 63" Rims |
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| Note |
Quick Change Rims optional. |
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| Note (1) |
Extended life wheel stations optional. |
Quick Change Rims optional. |
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 evaluate all job conditions and consult tire manufacturer for proper tire selection and TKPH (TMPH) capabilities. |
Caterpillar recommends the customer evaluate all job conditions and consult tire manufacturer for proper tire selection and TKPH (TMPH) capabilities. |
Caterpillar recommends the customer evaluates all job conditions and consults the tire manufacturer for proper tire selection. |
| Standard Tire |
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18.00R33 (E4) |
Suspension |
| Type |
Self-contained nitrogen/oil cylinders, pin-to-pin mounting, top & bottom double shear clevis attachments |
Self-contained nitrogen/oil cylinders, pin-to-pin mounting, top & bottom double shear clevis attachments |
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| Effective Cylinder Stroke - Front |
5.1 in |
10 in |
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| Effective Cylinder Stroke - Rear |
4.2 in |
5 in |
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| Rear axle - Oscillation |
±4.9 degrees |
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8.9 ° |
| Empty Loaded Cylinder Stroke Front |
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9.2 in |
| Empty Loaded Cylinder Stroke Rear |
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5.9 in |
Braking System |
| Service Brakes |
Four-Corner, Wet Disc, Oil Cooled, Hydraulically Actuated |
Four-Corner, Wet Disc, Oil Cooled, Hydraulically Actuated |
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| Front Wet Disc Brake Surface Area |
13921 in³ |
22642 in² |
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| Rear - Wet Disc Brake Surface Area |
20847 in³ |
32730 in² |
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| Standards |
(Service and Secondary): ISO 3450:1996 |
Service and Secondary: ISO 3450:2011 |
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| Parking Brakes |
Four-corner, Multi-disc, Spring Applied, Hydraulically Released |
Four-corner, Multi-disc, Spring Applied, Hydraulically Released |
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| Load Brake |
Rear service brakes |
Rear service brakes |
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| Note |
Anti-Lock Brake System (ABS) optional with CMD package |
Anti-Lock Brake System (ABS) optional with CMD package |
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| Electric Retarding |
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Radial Grid Design |
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| Dynamic Retarding Power - Continuous |
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5480 HP |
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Body Hoists |
| Type |
Twin, two-stage hydraulic cylinders with snubbing valve |
Twin, two-stage hydraulic cylinders with snubbing valve. |
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| Pump Flow - High Idle |
224 gal/min |
257.3 gal/min |
118 gal/min |
| Relief Valve Setting - Raise |
2955 psi |
3029 psi |
2750 psi |
| Body Raise Time - High Idle |
19 s |
21 s |
7.5 s |
| Body Lower Time - Float |
20 s |
22 s |
10 s |
| Body Power Down - High Idle |
17.5 s |
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10 s |
| Body Power Down- High Idle |
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17.5 s |
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| Note (1) |
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Twin, two-stage hydraulic cylinders mounted outside main frame; double-acting cylinders in both stages. |
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| Note (2) |
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Power raise in both stages; power down capability in both stages. |
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| Note (3) |
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Automatic body-lower modulation reduces impact on frame. |
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| Relief Valve Setting - Lower |
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500 psi |
Cab |
| Air Conditioning |
Air Conditioning (HFC - 134A refrigerant): 24,300 Btu/hr |
HFC - 134A refrigerant: 21,600 Btu/h |
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| Heater / Defroster |
38900 Btu/h |
24600 Btu/h |
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| Note |
Ambient capabilities down to -30C (-22F) for heater/defroster and up to 50C (122F) for air conditioning. |
Ambient capabilities down to -15C (5F) for heater/defroster and up to 50C (122F) for air conditioning. |
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| ROPS Standards (1) |
The operator sound pressure level, 76 dB(A), complies with ISO 6394 and ISO 6396. |
ROPS (Rollover Protective Structure) meets ISO 3471:2008 for Operator and ISO 13459:2012 for Trainer. |
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| ROPS Standards (2) |
ROPS (Rollover Protective Structure) meets ISO 3471:1994 criteria. |
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| FOPS Standards |
FOPS (Falling Objects Protective Structure) meets ISO 3449:1992 Level II criteria. |
FOPS (Falling Objects Protective Structure) meets ISO 3449:2005 Level II for Operator and ISO 13459:2012 Level II for Trainer. |
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Service Refill Capacities |
| Fuel Tank |
750 gal (US) |
1300 gal (US) |
140 gal (US) |
| Fuel Tank - Optional |
1300 gal (US) |
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| Diesel Exhaust Fluid Tank |
62 gal (US) |
100 gal (US) |
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| Cooling System |
284 gal (US) |
211 gal (US) |
33 gal (US) |
| Crankcase |
82 gal (US) |
82 gal (US) |
17 gal (US) |
| Rear Axle - Housing |
260 gal (US) |
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| Steering System - Including Tank |
77 gal (US) |
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23 gal (US) |
| Brake Hoist System - Includes Tank |
347 gal (US) |
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| Torque Converter - Transmission Sump |
27 gal (US) |
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| Torque Converter/Transmission System - Including Sump |
55 gal (US) |
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| Note (1) |
DEF Tank only available for EPA Tier 4 engine option. |
DEF Tank only available for U.S. EPA Tier 4 Final / EU Stage V engine option |
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| Fuel Tank (Tier 4) |
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1200 gal (US) |
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| Final Drive - Each |
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67 gal (US) |
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| Hydraulic System - Including Tank |
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385 gal (US) |
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| Hydraulic Tank |
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296 gal (US) |
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| Grease Tank |
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90 lb |
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| Differential - Final Drives |
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47 gal (US) |
| Steering Tank |
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14.5 gal (US) |
| Brake/Hoist Hydraulic Tank |
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38 gal (US) |
| Brake Hoist System |
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60 gal (US) |
| Torque Converter - Transmission System |
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17 gal (US) |
| DEF Tank |
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6 gal (US) |
Capacity - HP Body - 100% Fill Factor |
| Struck |
112.6-151 m³ (147-197.5 yd³) |
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| Heaped (SAE 2:1)* |
162-191 m³ (212-250 yd³) |
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| Note (1) |
Contact your local Cat dealer for body recommendation. |
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| Note (2) |
*ISO 6483:1980 |
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Weight Distributions - Approximate |
| Front Axle - Empty |
48 % |
47 % |
49 % |
| Rear Axle - Empty |
52 % |
53 % |
51 % |
| Front Axle - Loaded |
33 % |
33 % |
34 % |
| Rear Axle - Loaded |
67 % |
67 % |
66 % |
| Note |
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Weight distributions optimized with Cat body. |
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Transmission |
| Forward - 1 |
8 mile/h |
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7.4 mile/h |
| Forward - 2 |
10.8 mile/h |
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10.1 mile/h |
| Forward - 3 |
14.8 mile/h |
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13.8 mile/h |
| Forward - 4 |
19.9 mile/h |
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18.5 mile/h |
| Forward - 5 |
27.1 mile/h |
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25.1 mile/h |
| Forward - 6 |
37.3 mile/h |
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33.8 mile/h |
| Reverse |
7.3 mile/h |
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8.8 mile/h |
| Top Speed - Loaded |
37.3 mile/h |
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| Forward - 7 |
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45.8 mile/h |
| Note |
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Maximum travel speeds with standard 18.00R33 (E4) tires. |
Final Drives |
| Differential Ratio |
1.8:1 |
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1.92:1 |
| Planetary Ratio |
16:01 |
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4.80:1 |
| Total Reduction Ratio |
26.8:1 |
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9.26:1 |
Brakes |
| Brake Surface - Front |
13921 in² |
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216 in² |
| Brake Surface - Rear |
20847 in² |
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6235 in² |
| Standards |
J-ISO 3450 JAN88, ISO 3450:1996 |
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| Brake Standards |
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ISO 3450:2011 |
| Note |
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Target gross machine operating weight is 71 214 kg (157,000 lb). |
Capacity - MSD II - 100% Fill Factor |
| Struck |
112-142 m³ (146-186 yd³) |
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| Heaped (SAE 2:1) |
159-190 m3 (209-250 yd3) |
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| Note |
Contact your local Cat dealer for body recommendation. |
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ROPS |
| ROPS Standards |
ROPS (Rollover Protective Structure) for cab offered by Caterpillar meets ISO 3471:1994 ROPS criteria. |
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Rollover Protective Structure (ROPS) for cab offered by Caterpillar meets ISO 3471:2008 ROPS criteria. |
| FOPS Standards |
FOPS (Falling Objects Protective Structure) meets ISO 3449:1992 Level II FOPS criteria. |
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Falling Objects Protective Structure (FOPS) meets ISO 3449:2005 Level II FOPS criteria. |
Sound |
| Sound Standards |
The operator sound pressure level measured according to work cycle procedures specified in ISO 6394 and 6396 is 76 dB(A) for cab offered by Caterpillar, when properly installed and maintained and tested with doors and windows closed. |
The operator sound pressure level, 75 dB(A), measured according to ISO 6394:2008 and ISO 6396:2008. |
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| Sound Standards (1) |
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. |
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Hearing protection may be needed when operating with open operator station & cab for extended periods or in noisy environment. |
| Sound Standards (2) |
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Exterior sound pressure power level for standard machine measured according to tests specified in ISO 6395:2008 is 116 dB(A). |
| Sound Standards (3) |
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Operator Equivalent Sound Pressure Level is 79 dB(A) & 74 dB(A) with EU sound suppression applied when ISO 6396:2008 is used. |
Steering |
| Steer Angle |
36 ° |
39 ° |
40.5 ° |
| Turning Diameter - Front |
93.2 ft |
106.3 ft |
57.7 ft |
| Steering Standards |
SAE J15111 OCT90, ISO 5010:1992 |
Steering Standards: ISO 5010:2007 |
ISO 5010:2007 |
| Note |
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Turning Diameter (ISO 7457:1997) |
Target gross machine operating weight is 71 214 kg (157,000 lb). |
| Turning Circle - Clearance Diameter |
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66.6 ft |
Service Refill Capacities - High Altitude Only |
| Fuel Tank |
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2000 gal (US) |
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| Cooling System |
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273 gal (US) |
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| Crankcase |
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124 gal (US) |
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| Hydraulic Tank |
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273 gal (US) |
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| Hydraulic System (includes tank) |
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342 gal (US) |
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AC Drive System |
| Total Reduction Ratio |
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35:01:00 |
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| Top Speed - Loaded |
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40 mile/h |
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| Generator/Alternator |
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Brushless, engine mounted, dual bearing |
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| Controls |
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IGBT Inverter Technology, air cooled, pressurized cabinet with filtration |
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| Wheel Motor |
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Cat high-torque AC induction, rear axle mounted |
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| Cooling System |
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Cat variable speed, hydraulically driven cooling system |
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Capacity - HE Body - 100% fill factor |
| Struck |
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129-200 m³ (168-261 yd³) |
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| Heaped (SAE 2:1) |
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218-276 m³ (285-361 yd³) |
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| Note |
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Contact your local Cat dealer for body recommendations. |
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Engine - High Altitude Only |
| Engine Model |
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Cat® C175-20 |
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| Gross Power SAE J1995:2014 |
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4150 HP |
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| Net Power - SAE J1349:2011 |
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4000 HP |
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| Rated Speed |
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1750 r/min |
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| Emissions Rating |
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Fuel Optimized |
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| Bore |
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6.9 in |
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| Stroke |
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8.7 in |
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| Displacement |
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6469 in³ |
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| Note 1 |
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Net Power advertised is the power available at the flywheel when the engine is equipped with air intake system, exhaust system, and alternator. |
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| Note 2 |
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Additional fuel optimized selectable power rating: 2983 kW / 4,000 hp |
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Dimensions (Approximate) |
| Height - Top of ROPS |
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22.1 ft |
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| Overall Length |
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51.44 ft |
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| Wheel Base |
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21.9 ft |
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| Rear Axle - Tail |
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16.07 ft |
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| Dump Clearance - Empty |
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5.72 ft |
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| Loading Height - Empty |
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25.54 ft |
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| Overall Height - Body Raised |
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48.85 ft |
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| Centerline Front Tire Width |
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23.06 ft |
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| Front Axle Clearance - Loaded |
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2.81 ft |
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| Overall Canopy Width (with rock deflectors) |
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33.15 ft |
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| Outside Body/Canopy Width (without rock deflectors) |
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31.62 ft |
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| Inside Body Width |
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29.44 ft |
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| Front Canopy Height - Empty |
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26.01 ft |
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| Rear Axle Clearance - Loaded |
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2.8 ft |
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| Centerline of Rear Dual Tire Width |
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19.5 ft |
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| Overall Tire Width - Empty |
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30.27 ft |
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| Overall Length (High Altitude only) |
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51.87 ft |
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| Note |
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Dimensions listed includes canopy deflectors |
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Operating Specifications |
| Nominal Payload Class (100%) |
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42.1 ton (US) |
| Top Speed - Loaded |
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45.8 mile/h |
| Target Payload (100%) |
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42.1 ton (US) |
| Maximum Working Payload (110%) |
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46.3 ton (US) |
| Maximum Allowable Payload (120%)* |
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50.5 ton (US) |
| Body Capacity - SAE 2:1 |
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32.9 yd³ |
| Note (1) |
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*Refer to Caterpillar 10/10/20 Payload Policy for maximum gross machine weight limitations. |
| Note (2) |
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Target payload and capacity based on Dual Slope body with no liner. Attachment selection will affect payload and maximum gross machine operating weight. |
Capacity - Dual Slope - 100% Fill Factor |
| Struck |
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23.01 yd³ |
| Heaped (SAE 2:1)* |
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32.9 yd³ |
| Note (2) |
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*ISO 6483:1980. |
| Note (1) |
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Contact your local Cat dealer for body recommendation. |
Capacity - Flat Floor - 100% Fill Factor |
| Struck |
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23.01 yd³ |
| Heaped (SAE 2:1)* |
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32.9 yd³ |
| Note (1) |
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Contact your local Cat dealer for body recommendation. |
| Note (2) |
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*ISO 6483:1980. |
Dimensions |
| Height - Top of ROPS |
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12.7 ft |
| Overall Body Length |
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26.8 ft |
| Inside Body Length |
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18.5 ft |
| Overall Length |
- |
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28.9 ft |
| Wheel Base |
- |
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13 ft |
| Rear Axle - Tail |
- |
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8.5 ft |
| Ground Clearance |
- |
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1.6 ft |
| Dump Clearance |
- |
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1.7 ft |
| Loading Height - Empty |
- |
- |
10.3 ft |
| Inside Body Depth - Maximum |
- |
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4.6 ft |
| Overall Height - Body Raised |
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27.1 ft |
| Operating Width |
- |
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15.7 ft |
| Centerline Front Tire Width |
- |
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10.2 ft |
| Engine Guard Clearance |
- |
- |
1.8 ft |
| Outside Body Width |
- |
- |
12.9 ft |
| Inside Body Width |
- |
- |
11.9 ft |
| Front Canopy Height |
- |
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13.5 ft |
| Rear Axle - Clearance |
- |
- |
1.8 ft |
| Centerline of Rear Dual Tire Width |
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- |
8.3 ft |
| Overall Tire Width |
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12.1 ft |
