304 Mini Excavator

Overview

The Cat^® 304 Mini Excavator delivers power and performance in a compact size to help you work in a wide range of applications.

Cat Exclusives in a Mini Excavator

with extended service intervals, lower repair costs and easy service access

in lifting, digging and multi-function capability

Net Power	45 hp
Engine Model	C1.7 Turbo
Gross Power - 2,400 rpm - SAE J1995:2014	48.4 hp
Bore	3.3 in
Emissions	Meets U.S. EPA Tier 4 Final and EU Stage V emission standards.
Stroke	3.9 in
Displacement	101 in³
Net Power - 2,400 rpm - ISO 9249, 80/1269/EEC	45 hp
Note	Net power advertised is the power available at the flywheel when the engine is at rated speed and rated power when the engine is installed with the factory configured fan, air intake system, exhaust system, and alternator with a minimum alternator load.

Operating Weight	9867 lb
Minimum Operating Weight with Canopy*	8655 lb
Maximum Operating Weight with Canopy**	9647 lb
Note (2)	**Maximum Weight is based on steel tracks, operator, full fuel tank, long stick, straight blade, extra counterweight and no bucket.
Note (1)	*Minimum Weight is based on rubber tracks, operator, full fuel tank, standard stick, straight blade, no bucket and no extra counterweight.
Maximum Operating Weight with Cab**	9867 lb
Minimum Operating Weight with Cab*	8875 lb

Ground Pressure - Minimum Weight	4.2 psi
Maximum Traction Force - Low Speed	7329 lbf
Travel Speed - Low	2.2 mile/h
Ground Pressure - Maximum Weight	4.9 psi
Travel Speed - High	3.2 mile/h
Maximum Traction Force - High Speed	4271 lbf
Gradeability - Maximum	30 degrees

Operating Pressure - Travel	3553 psi
Auxiliary Circuit - Secondary - Pressure	3553 psi
Digging Force - Stick - Long	4316 lbf
Auxiliary Circuit - Secondary - Flow	7 gpm
Pump Flow at 2,400 rpm	25 gpm
Operating Pressure - Swing	2611 psi
Auxiliary Circuit - Primary - Flow	21 gpm
Auxiliary Circuit - Primary - Pressure	3553 psi
Note	Flow and pressure are not combinable. Under load, as flow rises pressure goes down.
Type	Load Sensing Hydraulics with Variable Displacement Piston Pump
Digging Force - Stick - Standard	4721 lbf
Digging Force - Bucket	8588 lbf
Operating Pressure - Equipment	3553 psi

Roll Over Protective Structure (ROPS)	ISO 12117-2:2008
Top Guard	ISO 10262:1998 (Level I)
Tip Over Protective Structure (TOPS)	ISO 12117:1997

Average Exterior Sound Pressure (ISO 6395:2008)	97 dB(A)
Operator Sound Pressure (ISO 6396:2008)	76 dB(A)
Note	European Union Directive “2000/14/EC”

Maximum Reach - Ground Level	204.7 in
Vertical Wall	94.3 in
Note	*Overall Shipping Length depends on blade position during shipment.
Tail Swing with Counterweight	51.2 in
Boom In Reach	88.8 in
Dig Depth	126.4 in
Maximum Dig Height	198.4 in
Maximum Blade Height	16.5 in
Swing Bearing - Height	21.9 in
Boom Swing - Left	20.9 in
Stick Length	54.9 in
O/A Undercarriage Length	87 in
Track Belt/Shoe Width	13.8 in
Boom Height - Shipping Position	63.8 in
Boom Swing - Right	28.7 in
Maximum Dump Clearance	143.5 in
Ground Clearance	12 in
Maximum Reach	209.8 in
O/A Shipping Height	100 in
Tail Swing without Counterweight	47.4 in
Maximum Blade Depth	18.7 in
Overall Shipping Length*	194.9 in

Dig Depth	138.2 in
Maximum Blade Depth	18.7 in
O/A Shipping Height	100 in
Maximum Dump Clearance	147.2 in
Stick Length	66.7 in
Maximum Dig Height	201.8 in
Maximum Reach - Ground Level	214.4 in
Track Width	66.9 in
Tail Swing with Counterweight	51.2 in
Swing Bearing - Height	21.9 in
Boom Height - Shipping Position	75.2 in
Boom Swing - Left	20.9 in
Maximum Reach	219.3 in
Boom In Reach	92.1 in
Boom Swing - Right	28.7 in
Track Belt/Shoe Width	13.8 in
Vertical Wall	99.8 in
Maximum Blade Height	16.5 in
Note	*Overall Shipping Length depends on blade position during shipment.
Overall Shipping Length*	194.9 in
Ground Clearance	12 in
O/A Undercarriage Length	87 in
Tail Swing without Counterweight	47.4 in