Cat 777 vs Cat 797F

The Cat 777 is ahead on: narrower to transport, lower to transport. The Cat 797F is ahead on: more power, dumps higher, lifts or carries more, bigger fuel tank, faster.

Below, every figure both makers publish sits side by side, with the Cat 777 and the Cat 797F drawn to the same scale from their dimension drawings.

Cat · rigid dump truck
Cat 777
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Cat · rigid dump truck
Cat 797F
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At a glance

Bold is the machine ahead on each figure, with its lead.

Figure	Cat 777	Cat 797F
Gross powerHigher is better	765 kW	2,983 kW+290%
Dump height (body raised)Higher is better	9.953 m	15.701 m+58%
Payload (nominal)Higher is better	97.3 t	363 t+273%
Fuel tankHigher is better	1,140 L	3,785 L+232%
Top speedHigher is better	67.1 km/h	67.6 km/h+1%
Overall widthLower is better	6.2 m+32%	9.116 m
Overall height (canopy)Lower is better	5.177 m+33%	7.709 m
Overall length	10.004 m	15.08 m

All specifications

Every figure the makers publish. Search for one, or show only those that differ.

Differences only(56)

FigureCat 777 Cat 797F

Dimensions

Overall length10.004 mDual slope body (flat floor body 10.227 m)15.08 m

Overall width6.2 mOverall canopy width9.116 m

Overall height (canopy)5.177 m7.709 mFront canopy height, empty

Wheelbase4.57 m7.195 m

Loading height (empty)4.38 mDual slope body (flat floor body 4.429 m)6.998 m

Dump height (body raised)9.953 m15.701 m

Ground clearance0.896 m0.786 m

Height to top of ROPS4.73 mLoaded6.526 mEmpty

Overall body length9.555 mDual slope body (flat floor body 10.070 m)14.802 m

Inside body length6.92 mDual slope body (flat floor body 7.186 m)9.976 m

Rear axle to tail3.045 mDual slope body (flat floor body 3.265 m)3.944 m

Dump clearance0.89 mDual slope body (flat floor body 0.818 m)2.017 m

Inside body depth (maximum)1.895 mDual slope body (flat floor body 1.777 m)3.363 m

Operating width (extended catwalk)6.545 mNot published

Centre line front tyre width4.163 m6.534 m

Overall front tyre width4.961 mNot published

Engine guard clearance0.864 m1.025 m

Outside body width5.524 mDual slope body (flat floor body 5.689 m)9.755 m

Inside body width5.197 mDual slope body (flat floor body 5.450 m)8.513 m

Rear axle clearance0.902 m0.947 m

Centre line rear dual tyre width3.576 m6.233 m

Overall tyre width5.262 mOver rear duals; all bodies9.529 mOver rear duals

Body dump angle49°Not published

Weight

Payload (nominal)97.3 t363 tNominal payload capacity

Gross machine operating weight163,360 kgTarget gross machine weight623,690 kgTarget gross machine operating weight

Empty operating weight66,083 kgNot published

Body weight16,047 kg41 368 - 61 235 kgDepends on body and liner

Weight distribution, empty (front/rear)46% / 54%47.2% / 52.8%

Weight distribution, loaded (front/rear)30% / 70%33.3% / 66.7%

Chassis weightNot published210 630 - 219 146 kg

Body

Body capacity (SAE 2:1 heaped)60.1 m³240-267 m³MSD II body, 100% fill factor

Body capacity (struck)41.9 m³Dual slope body (flat floor 43.1 m³)188-213 m³MSD II body

Body raise time15 sHigh idle; lower (float) 13 s25 sHigh idle; lower (float) 19 s

Hoist pump flowNot published1,200 L/minHigh idle

Engine

Engine modelCat C32BCat C175-20

EmissionsChina Nonroad Stage III, equivalent to U.S. EPA Tier 2Compliant with current U.S. EPA standards where applicable

Cylinders12Not published

Displacement32.1 L106 L

Gross power765 kW (1,025 hp)SAE J1995, at 1,800 rpm2,983 kW (4,000 hp)SAE J1995, at 1,750 rpm

Net power711 kW (953 hp)SAE J1349 / ISO 9249, at 1,800 rpm2,828 kW (3,793 hp)SAE J1349, at 1,750 rpm

Max torque5,130 NmNet, at 1,200 rpm; 36% torque riseNot published

Bore x strokeNot published175 mm x 220 mm

Performance

Top speed67.1 km/hLoaded, 7th gear, 27.00R49 (E4) tyres67.6 km/hLoaded, 7th gear

Turning diameter25.3 m42 mMachine clearance turning diameter

Steering angle31°40°

Transmission

Transmission7F/1R automatic powershift7F/1R

Total reduction ratio19.18:1Differential 2.74:1, planetary 7.00:121.26:1Differential 1.276:1, planetary 16.67:1

Tyres

Tyres27.00R49 (E4)Standard59/80R63 (Michelin or Bridgestone)

Service capacities

Fuel tank1,140 L3,785 L

Cooling system212 L1,160 L

Engine oil, with filter115 LCrankcase319 LCrankcase

Differentials222 L1,176 L

Final drives (each)42 L185 L

Steering system, with tank60 L355 L

Brake/hoist system, with tank420 L1,600 L

Torque converter/transmission system125 L629 LIncludes sump

Service intervals

Coolant12,000 hours12,000 hours

Sources: Cat 777-05 Off-Highway Truck Technical Specifications AEXQ2677-05 (09-2026) (Afr-ME, Asia Pacific, SE Asia, S. Am) · Cat 797F Mining Truck specifications AEHQ5884-09 (12-2023), Zeppelin (Cat dealer) copy

Drawn to scale

Side views measured off each maker's dimension drawing, front edges and ground lined up.

Cat 777Cat 797FSame scale, front edges and ground lined up.

Cat 777 vs Cat 797F: questions

Which has more power, the Cat 777 or Cat 797F?

The Cat 797F: Cat 777 765 kW (1,025 hp), Cat 797F 2,983 kW (4,000 hp) (gross power), a 290% difference.

Which lifts or carries more, the Cat 777 or Cat 797F?

The Cat 797F: Cat 777 97.3 t, Cat 797F 363 t (payload (nominal)), a 273% difference.

Which has the bigger fuel tank, the Cat 777 or Cat 797F?

The Cat 797F: Cat 777 1,140 L, Cat 797F 3,785 L (fuel tank), a 232% difference.

Which is narrower to transport, the Cat 777 or Cat 797F?

The Cat 777: Cat 777 6.2 m, Cat 797F 9.116 m (overall width), a 32% difference.

Where do these figures come from?

Each model's own published spec sheet or brochure, linked under the table. Builds differ by market and year, so confirm the figures for a particular machine with its dealer.

Can I rent or buy these machines in the UAE?

Each model's page lists the ones for hire and for sale on EquipmentsFinder now, with typical prices in AED.