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The Cat 730 EJ with a 16.9 m³ (22.1 yd³)/27.1 tonnes (30 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 EJ to include the new cab design makes the 730 EJ a more attractive proposition for our customers. Class leading levels of performance and new features such as Advanced Automatic Traction Control (AATC) and Assisted Ejecting Control create operator comfort, making a productive machine all day long. The machines retain 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
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.
763 in²
Note (2)
The power ratings apply at rated speed of 1,800 rpm when tested under the conditions for the specified standard.
The 730 EJ meets Tier 4 Final and Stage V emission standards.
Note (4)
Net power when the fan is at maximum speed is 274 kW (367 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
Engine Model
Cat® C13
Peak Engine Torque Gross (SAE J1995)
1579 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)
Cooling System
21.9 gal (US)
Hydraulic System
29.1 gal (US)
Fuel Tank
108.8 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
30 ton (US)

Body Capacities

Heaped (SAE 2:1)
22.1 yd³
17.7 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.


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

Turning Circle

Turning Dimensions - Clearance Radius
318 in
Turning Dimensions - Inside Radius
152 in
Turning Dimensions - SAE Turning Radius
294 in
Turning Dimensions - Aisle Width
214 in
Turning Dimensions - Steer Angle - Left/Right
Dimensions are for machines equipped with 750/65 R25 tires.

Operating Weights

Center Axle - Loaded
41502 lb
Rear Axle - Loaded
41017 lb
Front Axle - Loaded
35009 lb
Front Axle - Rated Load
1433 lb
Front Axle - Empty
34723 lb
Rear Axle - Empty
11707 lb
Center Axle - Rated Load
29156 lb
Center Axle - Empty
12214 lb
Total - Loaded
117528 lb
Total - Empty
58643 lb
Rear Axle - Rated Load
29156 lb
Total - Rated Load
59745 lb



Body Plate

High strength Brinell HB450 wear resistant steel


Lock to Lock
4.75 seconds @ 60 rpm