New CAT Equipment

304E2 CR Mini Hydraulic Excavator

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.

Get a Quote

Product Specs

Engine

Net Power 40.2 HP
Engine Model Cat C2.4
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.
Net Power - 2,200 rpm - ISO 9249/EEC 80/1269 40.2 HP
Displacement 146 in³
Stroke 4 in
Bore 3.4 in
Gross Power - ISO 14396 41.8 HP

Weights*

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

Travel System

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

Hydraulic System

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

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 - Long Stick

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

Dimensions - Standard Stick

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

Operating Specifications

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

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

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

Cab

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

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

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