305 CR Mini Hydraulic Excavator

Overview

The Cat^® 305 CR Mini Excavator delivers power and performance in a compact size to help you work in a wide range of applications.

Key Features

More Comfort. More Performance. More Versatility.

4 Industry First Features

Cat Exclusives in a Mini Excavator

Up to 10% Lower Total Ownership Costs

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

Up to 20% More Performance

in lifting, digging and multi-function capability

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Specifications

Net Power	45 hp
Engine Model	C1.7 Turbo
Net Power - 2,400 rpm - ISO 9249, 80/1269/EEC	45 hp
Gross Power - 2,400 rpm - SAE J1995:2014	48.4 hp
Bore	3.3 in
Stroke	3.9 in
Displacement	101 in³
Emissions	The Cat® C1.7 engine meets U.S. EPA Tier 4 Final and EU Stage V emission standards.
Note	Advertised power is tested per the specified standard in effect at the time of manufacture.
Note (2)	Net power advertised is the power available at the flywheel when the engine is at the rated speed of 2400 rpm and the engine is installed with the factory configured fan, air intake system, exhaust system and alternator with a minimum alternator load.

Operating Weight	12688 lb
Minimum Operating Weight with Canopy*	11016 lb
Maximum Operating Weight with Canopy**	12469 lb
Minimum Operating Weight with Cab*	11234 lb
Maximum Operating Weight with Cab**	12688 lb
Note (1)	*Minimum Weight is based on rubber tracks, operator, full fuel tank, standard stick, straight blade, no bucket and no extra counterweight.
Note (2)	**Maximum Weight is based on steel tracks with pads, operator, full fuel tank, long stick, straight blade, extra counterweight and no bucket.

Counterweight	534 lb
Long Stick	75 lb
Steel Tracks with Pads	827 lb
Angle Blade	225 lb

Travel Speed - High	3.1 mile/h
Travel Speed - Low	1.7 mile/h
Maximum Traction Force - High Speed	5553 lbf
Maximum Traction Force - Low Speed	11353 lbf
Ground Pressure - Minimum Weight	4 psi
Ground Pressure - Maximum Weight	4.7 psi
Gradeability - Maximum	30 degrees

Cooling System	2.9 gal (US)
Engine Oil	1.6 gal (US)
Fuel Tank	17 gal (US)
Hydraulic Tank	16 gal (US)
Hydraulic System	20 gal (US)

Pump Flow at 2,400 rpm	35 gpm
Operating Pressure - Equipment	3843 psi
Operating Pressure - Travel	3843 psi
Operating Pressure - Swing	2901 psi
Auxiliary Circuit - Primary - Flow	21 gpm
Auxiliary Circuit - Primary - Pressure	3843 psi
Auxiliary Circuit - Secondary - Flow	7 gpm
Auxiliary Circuit - Secondary - Pressure	3843 psi
Digging Force - Stick - Standard	6362 lbf
Digging Force - Stick - Long	5665 lbf
Digging Force - Bucket	11061 lbf
Note	Flow and pressure are not combinable. Under load, as flow rises pressure goes down.
Type	Load Sensing Hydraulics with Variable Displacement Piston Pump

Machine Swing Speed	9 r/min
Boom Swing - Left	72 Degrees
Boom Swing - Right	50 Degrees

Straight Blade Width	78 in
Straight Blade Height	15.4 in
Angle Blade Width	78 in
Angle Blade Height	15.7 in
Angle Blade - Left	25 degrees
Angle Blade - Right	25 degrees

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

Dig Depth	134.6 in
Vertical Wall	91.9 in
Maximum Reach - Ground Level	220.1 in
Maximum Reach	226.6 in
Maximum Dig Height	205.3 in
Maximum Dump Clearance	145.7 in
Boom In Reach	101.2 in
Tail Swing without Counterweight	43.1 in
Tail Swing with Counterweight	47.2 in
Maximum Blade Height	15.2 in
Maximum Blade Depth	23.4 in
Boom Height - Shipping Position	71.7 in
O/A Shipping Height	100.4 in
Swing Bearing - Height	24.4 in
O/A Undercarriage Length	101.6 in
Overall Shipping Length*	208.9 in
Boom Swing - Right	34.1 °
Boom Swing - Left	24.2 °
Track Belt/Shoe Width	15.7 in
Track Width	78 in
Ground Clearance	13.2 in
Stick Length	53.2 in
Note	*Overall Shipping Length depends on blade position during shipment.

Dig Depth	144.5 in
Vertical Wall	100.8 in
Maximum Reach - Ground Level	229.7 in
Maximum Reach	235.8 in
Maximum Dig Height	210.8 in
Maximum Dump Clearance	151.4 in
Boom In Reach	101.6 in
Tail Swing without Counterweight	43.1 in
Tail Swing with Counterweight	47.2 in
Maximum Blade Height	15.2 in
Maximum Blade Depth	23.4 in
Boom Height - Shipping Position	74.6 in
O/A Shipping Height	100.4 in
Swing Bearing - Height	24.4 in
O/A Undercarriage Length	101.6 in
Overall Shipping Length*	210.2 in
Boom Swing - Right	34.1 °
Boom Swing - Left	615 mm
Track Belt/Shoe Width	15.7 in
Track Width	78 in
Ground Clearance	13.2 in
Stick Length	63 in
Note	*Overall Shipping Length depends on blade position during shipment.

Air Conditioning	The air conditioning system on this machine contains the fluorinated greenhouse gas refrigerant R134a or R1234yf (Europe) (Global Warming Potential = 1430). See label or instruction manual for gas refrigerant identification. The system contains 0.75 kg (1.65 lb), 0.90 kg (1.98 lb) or 1.0 kg (2.20 lb) of refrigerant which has a CO2 equivalent of 1.430 metric tonnes (1.576 tons) for R134a and 0.001 tonnes (0.001 tons) for R1234yf (Europe).

Air Conditioning

The air conditioning system on this machine contains the fluorinated greenhouse gas refrigerant R134a or R1234yf (Europe) (Global Warming Potential = 1430). See label or instruction manual for gas refrigerant identification. The system contains 0.75 kg (1.65 lb), 0.90 kg (1.98 lb) or 1.0 kg (2.20 lb) of refrigerant which has a CO2 equivalent of 1.430 metric tonnes (1.576 tons) for R134a and 0.001 tonnes (0.001 tons) for R1234yf (Europe).

Operator Sound Pressure (ISO 6396:2008)	76 dB(A)
Average Exterior Sound Pressure (ISO 6395:2008)	97 dB(A)
Note	The declared dynamic operator sound pressure levels per ISO 6396:2008. The measurements were conducted with the cab doors and windows closed. *The labeled sound power level for the CE marked configurations when measured according to the test procedure and conditions specified in 2000/14/EC.