304E2 CR Mini Hydraulic Excavator

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The Cat® 304E2 CR Mini Hydraulic Excavator delivers efficient performance, durability and versatility in a compact design to help you work in a variety of applications.

Engine

Net Power
40.2 HP
Engine Model
Cat C2.4
Stroke
4 in
Displacement
146 in³
Bore
3.4 in
Net Power - 2,200 rpm - ISO 9249/EEC 80/1269
40.2 HP
Gross Power - ISO 14396
41.8 HP
Note
The Cat C2.4 meets U.S. EPA Tier 4 Final emission standards for North America, EU Stage V emission standards for Europe and Tier 4 Interim emission standards for all other regions.

Weights*

Operating Weight
8996 lb
Weight - Canopy, Standard Stick
8655 lb
Weight - Canopy, Long Stick
8721 lb
Weight - Cab, Standard Stick
8930 lb
Weight - Cab, Long Stick
8996 lb

Dimensions - Long Stick

Dig Depth
135 in
Maximum Reach
220 in
Maximum Dig Height
200 in
Maximum Dump Clearance
145 in
Boom Swing - Left
26 in
Maximum Blade Height
16 in
Maximum Blade Depth
19 in
Boom Swing - Right
29 in
Boom In Reach
87 in
Boom Height - Shipping Position
70 in
Vertical Wall
101 in
Track Belt/Shoe Width
14 in
Tail Swing
38 in
Swing Bearing - Height
22 in
O/A Undercarriage Length
87 in
O/A Track Width
77 in
O/A Shipping Height
98 in
O/A Shipping Length
194 in
Maximum Reach - Ground Level
215 in

Swing System

Machine Swing Speed
10 r/min

Blade

Width
76.8 in
Height
12.8 in
Dig Depth
18.5 in
Lift Height
15.7 in

Service Refill Capacities

Cooling System
1.5 gal (US)
Engine Oil
2.5 gal (US)
Hydraulic Tank
11.2 gal (US)
Fuel Tank
12.2 gal (US)
Hydraulic System
17.2 gal (US)

Dimensions - Standard Stick

Maximum Dump Clearance
141 in
Maximum Reach
211 in
Maximum Reach - Ground Level
206 in
Boom Swing - Right
29 in
Boom Swing - Left
26 in
Boom In Reach
83 in
Boom Height - Shipping Position
58 in
Maximum Blade Depth
19 in
Maximum Dig Height
196 in
Maximum Blade Height
16 in
Vertical Wall
95 in
Tail Swing
38 in
Track Belt/Shoe Width
14 in
Swing Bearing - Height
22 in
O/A Undercarriage Length
87 in
O/A Track Width
77 in
O/A Shipping Length
190 in
O/A Shipping Height
98 in
Dig Depth
123 in

Hydraulic System

Digging Force - Stick - Long
4384 lb
Operating Pressure - Travel
3553 psi
Pump Flow at 2,200 rpm
26.4 gal/min
Digging Force - Stick - Standard
4856 lb
Operating Pressure - Equipment
3553 psi
Operating Pressure - Swing
3132 psi
Digging Force - Bucket
8498 lb
Note
Flow and pressure are not combinable. Under load, as flow rises pressure goes down.
Maximum Auxiliary Circuit - Secondary - Flow at Pump
6.6 gal/min
Maximum Auxiliary Circuit - Primary - Flow at Pump
17.2 gal/min
Maximum Auxiliary Circuit - Primary - Pressure at Pump
3553 psi
Maximum Auxiliary Circuit - Secondary - Pressure at Pump
3553 psi

Travel System

Travel Speed - Low
2.1 mile/h
Travel Speed - High
3.2 mile/h
Maximum Traction Force - Low Speed
6969 lb
Maximum Traction Force - High Speed
3799 lb
Ground Pressure - Canopy
4.1 psi
Ground Pressure - Cab
4.3 psi

Cab

Exterior Sound Power Level - ISO 6395:2008*
96 dB(A)
Dynamic Operator Sound Pressure Level (ISO 6396:2008)
81 dB(A)

Lift Capacities at Ground Level - Lift Point Radius: 4500 mm (177 in)

Blade Down - Side
1058 lb
Blade Up - Front
948 lb
Blade Down - Front
1896 lb
Blade Up - Side
948 lb

Lift Capacities at Ground Level - Lift Point Radius: 3000 mm (118 in)

Blade Up - Side
1808 lb
Blade Up - Front
1808 lb
Blade Down - Side
2007 lb
Blade Down - Front
3462 lb

Operating Specifications

Stick Length - Long
64 in
Stick Length - Standard
52 in
Machine Overhang
0 in