Get a Quote

The Cat 730 with a 17.5 m³ (23 yd³)/28 tonnes (31 tons) capacity, offers demonstrated reliability and durability, high performance and productivity and a new world-class cab to improve operator comfort and ease of operation. Updating the successful 730C2 to include the new cab design makes the 730 a more attractive proposition for our customers. Class leading levels of performance and new features such as Advanced Automatic Traction Control (AATC) and Assisted Hoisting Control create operator comfort, making a productive machine all day long while retaining all axle enclosed wet brakes and Advanced Productivity Electronic Control Strategy (APECS).

Cat Specs


Gross Power - SAE J1995
375 HP
Net Power - SAE J1349
367 HP
Net Power - ISO 14396
370 HP
5.1 in
6.2 in
762.8 in²
Note (1)
The references to Tier 4 Final/Stage V include U.S. EPA Tier 4 Final, EU Stage V, Japan 2014 (Tier 4 Final), and Korea Tier 4 Final emission standards.
Note (2)
The power ratings apply at rated speed of 1,800 rpm when tested under the conditions for the specified standard.
The 730 meets Tier 4 Final and Stage V emission standards.
Note (4)
Net power when the fan is at maximum speed is 254 kW (341 hp) per the SAE reference conditions.
Note (3)
The net power advertised is the power available at the flywheel when the engine is equipped with alternator, air cleaner, muffler and fan at minimum speed.
Peak Engine Torque Speed
1200 r/min
Peak Engine Torque Gross (SAE J1995)
1579 ft·lbf
Engine Model
Cat® C13
Peak Engine Torque Net (SAE J1349)
1564 ft·lbf
No Engine De-rating Below
12500 ft
Note (5)
DEF used in Cat SCR systems must meet the requirements outlined in the International Organization for Standardization (ISO) standard 22241-1. ISO 22241-1 requirements are met by many brands of DEF, in

Service Refill Capacities

DEF Tank
5.3 gal (US)
Engine Crankcase
10 gal (US)
Final Drives/Differential
33 gal (US)
Output Transfer Gear Box
6.3 gal (US)
Fuel Tank
108.8 gal (US)
Cooling System
21.9 gal (US)
Hydraulic System
29.1 gal (US)
12.4 gal (US)


Forward - 3
14 mile/h
Forward - 4
21 mile/h
Forward - 5
29 mile/h
Forward - 6
34 mile/h
Forward - 1
5 mile/h
Forward - 2
9 mile/h
Reverse - 1
6 mile/h


Rated Payload
31 ton (US)

Body Capacities

Heaped (SAE 2:1)
23 yd³
17.4 yd³
Tailgate Heaped SAE 2:1
24.6 yd³
Tailgate Struck
18.2 yd³

Sound Levels

Interior Cab
72 dB(A)
Note (1)
The operator sound exposure Leq (equivalent sound pressure level) measured according to the work cycle procedures specified in ANSI/SAE J1166 OCT98 is 72 dB(A), for the cab offered by Caterpillar, whe
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 noisy environments.

Body Hoist

Raise Time
12 s
Lower Time
8 s


ISO 3450 – 2011
Cab - FOPS
ISO 3449 Level II – 2005
Cab - ROPS
ISO 3471 – 2008
ISO 5010 – 2007

Operating Weights

Front Axle - Loaded
40300 lb
Rear Axle - Empty
9568 lb
Center Axle - Loaded
37302 lb
Total - Loaded
114420 lb
Center Axle - Rated Load
27249 lb
Total - Empty
52690 lb
Total - Rated Load
61729 lb
Front Axle - Empty
33069 lb
Center Axle - Empty
10053 lb
Rear Axle - Loaded
36817 lb
Rear Axle - Rated Load
27249 lb
Front Axle - Rated Load
7231 lb

Turning Circle

Turning Dimensions - Clearance Radius
318 in
Turning Dimensions - Aisle Width
210 in
Turning Dimensions - SAE Turning Radius
294 in
Turning Dimensions - Steer Angle - Left/Right
Dimensions are for machines equipped with 23.5R25 tires.
Turning Dimensions - Inside Radius
153 in



Body Plate

High strength Brinell HB450 wear resistant steel


Lock to Lock
4.75 seconds @ 60 rpm