305 CR - Tier 4 / Stage V

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An extensive line of Cat® mini hydraulic excavators offers the performance to dig in and be productive on every job.

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Specifications

Blade

Angle Blade Width

78 in 1980 mm
Straight Blade Height

15.4 in 390 mm
Straight Blade Width

78 in 1980 mm
Angle Blade Height

15.7 in 400 mm
Angle Blade - Left

25 degrees
Angle Blade - Right

25 degrees

Certification - Cab and Canopy

Top Guard

ISO 10262:1998 Level I
Roll Over Protective Structure (ROPS)

ISO 12117-2:2008
Tip Over Protective Structure (TOPS)

ISO 12117:1997

Dimensions - Long Stick

Dig Depth

144.5 in 3670 mm
Stick Length

63 in 1601 mm
Track Width

78 in 1980 mm
Maximum Blade Depth

23.4 in 595 mm
Maximum Dump Clearance

151.4 in 3845 mm
Boom Swing - Left

615 mm 24.2 °
Boom Swing - Right

34.1 ° 865 mm
Swing Bearing - Height

24.4 in 619 mm
Boom Height - Shipping Position

74.6 in 1895 mm
Boom In Reach

101.6 in 2580 mm
Maximum Reach

235.8 in 5990 mm
Track Belt/Shoe Width

15.7 in 400 mm
Maximum Reach - Ground Level

229.7 in 5835 mm
Maximum Blade Height

15.2 in 385 mm
O/A Shipping Height

100.4 in 2550 mm
Tail Swing without Counterweight

43.1 in 1095 mm
O/A Undercarriage Length

101.6 in 2580 mm
Tail Swing with Counterweight

47.2 in 1200 mm
Vertical Wall

100.8 in 2560 mm
Note

*Overall Shipping Length depends on blade position during shipment.
Overall Shipping Length*

210.2 in 5340 mm
Maximum Dig Height

210.8 in 5355 mm
Ground Clearance

13.2 in 335 mm

Dimensions - Standard Stick

Maximum Dig Height

205.3 in 5215 mm
Maximum Blade Height

15.2 in 385 mm
Dig Depth

134.6 in 3420 mm
Boom Swing - Right

34.1 ° 865 mm
Maximum Reach - Ground Level

220.1 in 5590 mm
Tail Swing without Counterweight

43.1 in 1095 mm
Boom Height - Shipping Position

71.7 in 1820 mm
Maximum Blade Depth

23.4 in 595 mm
Maximum Reach

226.6 in 5755 mm
Boom Swing - Left

24.2 ° 615 mm
Overall Shipping Length*

208.9 in 5305 mm
O/A Undercarriage Length

101.6 in 2580 mm
Swing Bearing - Height

24.4 in 619 mm
Stick Length

53.2 in 1351 mm
Track Belt/Shoe Width

15.7 in 400 mm
Boom In Reach

101.2 in 2570 mm
Vertical Wall

91.9 in 2335 mm
Tail Swing with Counterweight

47.2 in 1200 mm
Maximum Dump Clearance

145.7 in 3700 mm
O/A Shipping Height

100.4 in 2550 mm
Note

*Overall Shipping Length depends on blade position during shipment.
Ground Clearance

13.2 in 335 mm

Engine

Net Power

45 hp 33.6 kW
Engine Model

C1.7 Turbo
Net Power - 2,400 rpm - ISO 9249, 80/1269/EEC

45 hp 33.6 kW
Note

Advertised power is tested per the specified standard in effect at the time of manufacture.
Gross Power - 2,400 rpm - SAE J1995:2014

48.4 hp 36.1 kW
Stroke

3.9 in 100 mm
Bore

3.3 in 84 mm
Displacement

101 in³ 1.662 l
Emissions

The Cat® C1.7 engine meets U.S. EPA Tier 4 Final and EU Stage V emission standards.
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.

Hydraulic System

Auxiliary Circuit - Secondary - Pressure

3843 psi 265 bar
Pump Flow at 2,400 rpm

35 gal/min 133 l/min
Operating Pressure - Swing

2901 psi 200 bar
Operating Pressure - Travel

3843 psi 265 bar
Auxiliary Circuit - Secondary - Flow

7 gal/min 28 l/min
Digging Force - Stick - Standard

6362 lbf 28.3 kN
Auxiliary Circuit - Primary - Pressure

3843 psi 265 bar
Auxiliary Circuit - Primary - Flow

21 gal/min 80 l/min
Digging Force - Bucket

11061 lbf 49.2 kN
Operating Pressure - Equipment

3843 psi 265 bar
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 - Long

5665 lbf 25.2 kN

Service Refill Capacities

Hydraulic Tank

16 gal (US) 60 l
Fuel Tank

17 gal (US) 63 l
Engine Oil

1.6 gal (US) 6 l
Hydraulic System

20 gal (US) 75 l
Cooling System

2.9 gal (US) 11 l

Sound

Average Exterior Sound Pressure (ISO 6395:2008)

97 dB(A) 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.
Operator Sound Pressure (ISO 6396:2008)

76 dB(A) 76 dB(A)

Sustainability

Recyclability

96%

Swing System

Boom Swing - Left

72 Degrees
Machine Swing Speed

9 r/min 9 r/min
Boom Swing - Right

50 Degrees

Travel System

Ground Pressure - Minimum Weight

4 psi 27.3 kPa
Maximum Traction Force - Low Speed

11353 lbf 50.5 kN
Ground Pressure - Maximum Weight

4.7 psi 32.2 kPa
Travel Speed - Low

1.7 mile/h 2.8 km/h
Maximum Traction Force - High Speed

5553 lbf 24.7 kN
Travel Speed - High

3.1 mile/h 5 km/h
Gradeability - Maximum

30 degrees

Weight Increase from Minimum Configuration

Counterweight

534 lb 242 kg
Long Stick

75 lb 34 kg
Steel Tracks with Pads

827 lb 375 kg
Angle Blade

225 lb 102 kg

Weights

Operating Weight

12688 lb 5754 kg
Minimum Operating Weight with Canopy*

11016 lb 4996 kg
Note (1)

*Minimum Weight is based on rubber tracks, operator, full fuel tank, standard stick, straight blade, no bucket and no extra counterweight.
Minimum Operating Weight with Cab*

11234 lb 5095 kg
Maximum Operating Weight with Cab**

12688 lb 5754 kg
Maximum Operating Weight with Canopy**

12469 lb 5655 kg
Note (2)

**Maximum Weight is based on steel tracks with pads, operator, full fuel tank, long stick, straight blade, extra counterweight and no bucket.

Benefits

UNMATCHED DEALER SUPPORT

Your Cat dealer is here to help you reach your business goals. From providing equipment solutions to operator training to service needs and beyond, your Cat dealer is ready to help.

LOWER OPERATING COSTS

Equipped with features such as auto idle, auto engine shutdown, and efficient hydraulics with a variable displacement pump, the Cat mini excavator was designed with reducing your operating costs in mind.

BIG PERFORMANCE IN A COMPACT DESIGN

STICK STEER TRAVEL MODE

Moving around the job site is even easier with the Cat Stick Steer option. Easily switch from traditional travel controls with levers and pedals to joystick controls to move the machine and to operate the blade. The benefit of less effort and improved control is in your hands!

LOWER OPERATING COSTS

SIMPLE SERVICE FOR LESS DOWNTIME

Maintenance is quick and easy on the Cat mini excavator. Routine check points are easy to access at ground level through the side doors.

SAFETY ON THE JOB SITE

Your safety is our top priority. The Cat mini excavator is designed to help keep you safe on the job. Courtesy work lights and a fluorescent retractable seat belt with optional seat belt reminder system are just a couple of the safety features we’ve built into the machine.

BIG PERFORMANCE IN A COMPACT DESIGN

Strong lift and dig performance helps you get the job done faster. The compact radius design lets you access and work in the tightest areas. Dig-to-blade and dozer blade float allows for easy clean up. An angle blade is also an option for finished grading and easier backfilling applications.

EASY TO OPERATE

Controls are easy to use and the intuitive Next Generation LCD monitor provides easy to read machine information. An advanced touchscreen monitor can also be equipped as an upgrade option.

ALL DAY COMFORT

Choose either a canopy or a sealed and pressurized cab which can be equipped with air conditioning, adjustable wrist rests, and a suspension seat to help keep you working comfortably all day long.