307E2 Mini Hydraulic Excavator

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The Cat® 307E2 Mini Hydraulic Excavator delivers high performance, durability and versatility in a standard tail swing design to help you work in a variety of applications.


Engine Model
Cat® C2.4 Turbo
Net Power
50.6 HP
146.5 in³
Gross Power - ISO 14396
53.1 HP
Meets U.S. EPA Tier 4 Final and EU Stage IIIB emission standards.
Rated Net Power - 2,200 rpm - ISO 9249/EEC 80/1269
50.6 HP
3.4 in
4 in


Operating Weight
16028 lb
Operating Weight - With Cab
16028 lb
Note (1)
Weight with steel tracks with rubber pads, bucket, operator (75 kg/165 lb), full fuel and auxiliary lines.
Note (2)
Weight varies depending on machine configuration.

Swing System

Machine Swing Speed
10.2 r/min
Automatic swing break, spring applied, hydraulic release.


90.6 in
17.5 in
Dig Depth
15.3 in
Lift Height
13.8 in

Service Refill Capacities

Cooling System
3.7 gal (US)
Engine Oil
2.9 gal (US)
Hydraulic Tank
13.5 gal (US)
Fuel Tank
35.7 gal (US)
Hydraulic System
20.6 gal (US)

Travel System

Ground Pressure
4.92 psi
Note (2)
Drive modules are integrated into the roller frame for total protection.
Note (3)
Straight line travel when tracking and operating the front linkage simultaneously.
Travel Speed - Low
1.99 mile/h
Travel Speed - High
3.17 mile/h
Maximum Traction Force - Low Speed
13331 lbf
Gradeability - Maximum
Maximum Traction Force - High Speed
7599 lbf
Note (1)
Each track is driven by one independent 2-speed motor.

Dimensions - Standard Stick

Maximum Reach
20.7 ft
Maximum Dump Clearance
17 ft
Maximum Blade Depth
1.1 ft
Maximum Blade Height
1.3 ft
Maximum Dig Height
23.8 ft
Dig Depth
13.4 ft
Boom In Reach
5.5 ft
Boom Height - Shipping Position
8.6 ft
Vertical Wall
11.9 ft
Track Belt/Shoe Width
1.5 ft
Tail Swing - Standard Counterweight
5.7 ft
Swing Bearing - Height
2.5 ft
O/A Undercarriage Length
9 ft
O/A Track Width
7.2 ft
O/A Shipping Length
19.9 ft
O/A Shipping Height
8.6 ft
Maximum Reach - Ground Level
20.2 ft


Number of Carrier Rollers
1 per side
Number of Track Rollers
5 per side
Track Roller Type
Center flange


Average Exterior Sound Pressure
98 dB(A) ISO 6395 – Dynamic Test

Operating Specifications

Stick Length - Standard
5.5 ft
Machine Overhang
1.2 ft

Hydraulic System

Pump Flow at 2,400 rpm
40.9 gal/min
Operating Pressure - Travel
4061 psi
Operating Pressure - Swing
4061 psi
Operating Pressure - Equipment
4061 psi
Load sensing hydraulics with variable displacement piston pump.
Digging Force - Stick - Standard
8340 lbf
Auxiliary Circuit - Secondary (280 bar/4,061 psi)
8.7 gal/min
Digging Force - Bucket
11375 lbf
Auxiliary Circuit - Primary (280 bar/4,061 psi)
33.8 gal/min