US
Metric

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.

Engine

Net Power
45.00 hp
33.60 kW

Weights

Operating Weight
12688.00 lb
5754.00 kg

Dimensions - Long Stick

Dig Depth
144.50 in
3670.00 mm

Engine

Engine Model
C1.7 Turbo

Dimensions - Long Stick

Stick Length
63.00 in
1601.00 mm

Engine

Net Power - 2,400 rpm - ISO 9249, 80/1269/EEC
45.00 hp
33.60 kW

Swing System

Boom Swing - Left
72 Degrees

Dimensions - Standard Stick

Maximum Dig Height
205.30 in
5215.00 mm
Maximum Blade Height
15.20 in
385.00 mm

Service Refill Capacities

Hydraulic Tank
16.00 gal (US)
60.00 l

Dimensions - Long Stick

Track Width
78.00 in
1980.00 mm

Service Refill Capacities

Fuel Tank
17.00 gal (US)
63.00 l

Travel System

Ground Pressure - Minimum Weight
4.00 psi
27.30 kPa

Blade

Angle Blade Width
78.00 in
1980.00 mm

Dimensions - Long Stick

Maximum Blade Depth
23.40 in
595.00 mm
Maximum Dump Clearance
151.40 in
3845.00 mm
Boom Swing - Left
615.00 mm
24.20 °

Dimensions - Standard Stick

Dig Depth
134.60 in
3420.00 mm

Dimensions - Long Stick

Boom Swing - Right
34.10 °
865.00 mm

Dimensions - Standard Stick

Boom Swing - Right
34.10 °
865.00 mm

Travel System

Maximum Traction Force - Low Speed
11353.00 lbf
50.50 kN

Dimensions - Standard Stick

Maximum Reach - Ground Level
220.10 in
5590.00 mm
Tail Swing without Counterweight
43.10 in
1095.00 mm

Blade

Straight Blade Height
15.40 in
390.00 mm

Sound

Average Exterior Sound Pressure (ISO 6395:2008)
97.00 dB(A)
97.00 dB(A)

Travel System

Ground Pressure - Maximum Weight
4.70 psi
32.20 kPa

Swing System

Machine Swing Speed
9.00 r/min
9.00 r/min

Dimensions - Long Stick

Swing Bearing - Height
24.40 in
619.00 mm

Dimensions - Standard Stick

Boom Height - Shipping Position
71.70 in
1820.00 mm

Engine

Note
Advertised power is tested per the specified standard in effect at the time of manufacture.

Dimensions - Long Stick

Boom Height - Shipping Position
74.60 in
1895.00 mm

Dimensions - Standard Stick

Maximum Blade Depth
23.40 in
595.00 mm

Engine

Gross Power - 2,400 rpm - SAE J1995:2014
48.40 hp
36.10 kW

Dimensions - Standard Stick

Maximum Reach
226.60 in
5755.00 mm

Hydraulic System

Auxiliary Circuit - Secondary - Pressure
3843.00 psi
265.00 bar

Certification - Cab and Canopy

Top Guard
ISO 10262:1998 Level I

Dimensions - Standard Stick

Boom Swing - Left
24.20 °
615.00 mm

Weight Increase from Minimum Configuration

Counterweight
534.00 lb
242.00 kg

Engine

Stroke
3.90 in
100.00 mm
Bore
3.30 in
84.00 mm

Hydraulic System

Pump Flow at 2,400 rpm
35.00 gal/min
133.00 l/min

Blade

Straight Blade Width
78.00 in
1980.00 mm

Dimensions - Long Stick

Boom In Reach
101.60 in
2580.00 mm
Maximum Reach
235.80 in
5990.00 mm

Dimensions - Standard Stick

Overall Shipping Length*
208.90 in
5305.00 mm
O/A Undercarriage Length
101.60 in
2580.00 mm

Sound

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.

Travel System

Travel Speed - Low
1.70 mile/h
2.80 km/h

Dimensions - Long Stick

Track Belt/Shoe Width
15.70 in
400.00 mm

Hydraulic System

Operating Pressure - Swing
2901.00 psi
200.00 bar
Operating Pressure - Travel
3843.00 psi
265.00 bar

Dimensions - Long Stick

Maximum Reach - Ground Level
229.70 in
5835.00 mm
Maximum Blade Height
15.20 in
385.00 mm
O/A Shipping Height
100.40 in
2550.00 mm

Service Refill Capacities

Engine Oil
1.60 gal (US)
6.00 l

Travel System

Maximum Traction Force - High Speed
5553.00 lbf
24.70 kN

Dimensions - Long Stick

Tail Swing without Counterweight
43.10 in
1095.00 mm

Dimensions - Standard Stick

Swing Bearing - Height
24.40 in
619.00 mm

Travel System

Travel Speed - High
3.10 mile/h
5.00 km/h

Dimensions - Long Stick

O/A Undercarriage Length
101.60 in
2580.00 mm

Dimensions - Standard Stick

Stick Length
53.20 in
1351.00 mm

Dimensions - Long Stick

Tail Swing with Counterweight
47.20 in
1200.00 mm

Hydraulic System

Auxiliary Circuit - Secondary - Flow
7.00 gal/min
28.00 l/min

Weights

Minimum Operating Weight with Canopy*
11016.00 lb
4996.00 kg

Weight Increase from Minimum Configuration

Long Stick
75.00 lb
34.00 kg

Weights

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*
11234.00 lb
5095.00 kg

Hydraulic System

Digging Force - Stick - Standard
6362.00 lbf
28.30 kN
Auxiliary Circuit - Primary - Pressure
3843.00 psi
265.00 bar

Dimensions - Long Stick

Vertical Wall
100.80 in
2560.00 mm

Hydraulic System

Auxiliary Circuit - Primary - Flow
21.00 gal/min
80.00 l/min
Digging Force - Bucket
11061.00 lbf
49.20 kN

Dimensions - Standard Stick

Track Belt/Shoe Width
15.70 in
400.00 mm

Sound

Operator Sound Pressure (ISO 6396:2008)
76.00 dB(A)
76.00 dB(A)

Hydraulic System

Operating Pressure - Equipment
3843.00 psi
265.00 bar
Note
Flow and pressure are not combinable. Under load, as flow rises pressure goes down.

Weights

Maximum Operating Weight with Cab**
12688.00 lb
5754.00 kg

Dimensions - Long Stick

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

Weights

Maximum Operating Weight with Canopy**
12469.00 lb
5655.00 kg

Swing System

Boom Swing - Right
50 Degrees

Dimensions - Long Stick

Overall Shipping Length*
210.20 in
5340.00 mm

Weights

Note (2)
**Maximum Weight is based on steel tracks with pads, operator, full fuel tank, long stick, straight blade, extra counterweight and no bucket.

Service Refill Capacities

Hydraulic System
20.00 gal (US)
75.00 l

Dimensions - Standard Stick

Boom In Reach
101.20 in
2570.00 mm
Vertical Wall
91.90 in
2335.00 mm

Weight Increase from Minimum Configuration

Steel Tracks with Pads
827.00 lb
375.00 kg

Engine

Displacement
101.00 in³
1.66 l

Blade

Angle Blade Height
15.70 in
400.00 mm

Hydraulic System

Type
Load Sensing Hydraulics with Variable Displacement Piston Pump

Service Refill Capacities

Cooling System
2.90 gal (US)
11.00 l

Hydraulic System

Digging Force - Stick - Long
5665.00 lbf
25.20 kN

Engine

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

Dimensions - Standard Stick

Tail Swing with Counterweight
47.20 in
1200.00 mm

Dimensions - Long Stick

Maximum Dig Height
210.80 in
5355.00 mm

Dimensions - Standard Stick

Maximum Dump Clearance
145.70 in
3700.00 mm
O/A Shipping Height
100.40 in
2550.00 mm
Note
*Overall Shipping Length depends on blade position during shipment.

Certification - Cab and Canopy

Roll Over Protective Structure (ROPS)
ISO 12117-2:2008
Tip Over Protective Structure (TOPS)
ISO 12117:1997

Travel System

Gradeability - Maximum
30 degrees

Blade

Angle Blade - Left
25 degrees
Angle Blade - Right
25 degrees

Dimensions - Standard Stick

Ground Clearance
13.20 in
335.00 mm

Weight Increase from Minimum Configuration

Angle Blade
225.00 lb
102.00 kg

Dimensions - Long Stick

Ground Clearance
13.20 in
335.00 mm

Sustainability

Recyclability
96%

Engine

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.
Features

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.

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.

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!

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.

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.

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.

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.

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.
Standard Equipment
  • ENGINE
    • Cat® C1.7 Turbo Engine (U.S. EPA Tier 4 Final)
    • Automatic Engine Idle
    • Automatic Engine Shutdown
    • Automatic Two Speed Travel
    • Fuel Water Separator
    • Power on Demand (not available in all regions)
    • Variable Displacement Piston Pump
    • Load Sensing/Flow Sharing Hydraulics
  • HYDRAULICS
    • Smart Tech Electronic Pump
    • Accumulator
    • Automatic Swing Brake
    • Auxiliary Hydraulic Lines
    • One and Two Way Auxiliary Flow
    • Continuous Auxiliary Flow
    • Auxiliary Line Quick Disconnects
  • GUARDING
    • ROPS ISO 12117-2:2008
    • Top Guard ISO 10262:1998 (Level I)
  • OTHER
    • Eco Drain
  • OPERATOR ENVIRONMENT
    • LED Front and Rear Lights
    • LED Boom Light
    • Canopy or Cab
    • Top Guard ISO 10262:1998 Level I
    • ROPS – ISO 12117-2:2008
    • TOPS – ISO 12117:1997
    • Stick Steer Mode
    • Travel Cruise Control
    • Control Pattern Changer (optional in some regions)
    • Adjustable Wrist Rests
    • Washable Floor Mat
    • Travel Pedals and Hand Levers
    • Machine Security
    • Machine Security – Standard Key with Pass Code
    • Fabric Suspension Seat (Cab only)
    • Vinyl Suspension Seat (Canopy only)
    • Hydraulic Lockout – All Controls
    • Retractable High Visibility Seat Belt (75 mm/3 in)
    • Coat Hook
    • Cup Holder
    • Storage Pocket
    • Skylight
    • Mounting Bosses for Front
    • Signaling/Warning Horn
    • Interior Light (Cab only)
    • Boom Light, Halogen (not available in all regions)
    • Utility Space for Mobile Phone
    • Next Generation Color LCD Monitor (IP66)
      – Fuel Level and Coolant Temperature Gauges
      – Maintenance and Machine Monitoring
      – Performance and Machine Adjustments
      – Numeric Security Code
      – Multiple Languages
      – Hour Meter with Wake Up Switch
      – Jog Dial (cab only)
  • UNDERCARRIAGE
    • Rubber Belt (400 mm/15.7 in)
    • Dozer Straight Blade
    • Dozer Blade Float
    • Tie Downs on Track Frame
  • BOOM, STICK AND LINKAGES
    • One Piece Boom (2716 mm/106.9 in)
    • Standard Stick (1351 mm/53.2 in)
    • Front Shovel Capable – Pin-On
    • Thumb Ready
    • Certified Lifting Eye
  • ELECTRICAL
    • 12 Volt Battery
    • Software (machine and monitor)
    • Maintenance Free Battery
    • Lock Out/Tag Out Battery Disconnect
    • 12 Volt Power Socket
    • Travel Alarm (optional in some regions)
Optional Equipment
  • UNDERCARRIAGE
    • Steel Track (400 mm/15.7 in)
    • Steel Track with Rubber Pads
    • Angle Blade
  • BOOM, STICK AND LINKAGES
    • Long Stick (1601 mm/63.0 in)
    • Front Shovel Capable – Dual Lock Manual Coupler
    • Front Shovel Capable – Hydraulic Coupler
    • Attachments including Couplers, Thumbs, Buckets, Augers and Hammers
    • 2nd Auxiliary Hydraulic Lines
    • Bucket Divert Lines
    • Boom Lowering Check Valve
    • Stick Lowering Check Valve
    • Hydraulic Quick Coupler Lines
  • ELECTRICAL
    • Product Link™ PL243 (regulations apply)
    • Product Link PLE643 (regulations apply)
  • OTHER
    • Bio Oil Capable
    • Water Jacket Heater
    • Counterweight (242 kg/534 lb)
  • OPERATOR ENVIRONMENT
    • Cab with Air Conditioning
    • Cab with Heater
    • No Travel Pedals and Hand Levers (optional in some regions)
    • Machine Security – Push to Start with Key Fob/Pass Code
    • Mirrors, Left, Right and Rear
    • Camera
    • Radio – Bluetooth®, Auxiliary, Microphone, USB (charging only) (Cab only)
    • Next Generation Advanced Monitor
      – Touch Screen
      – Site Reference System
      – High Definition Camera Capable (IP68 and IP69K)
      – Numeric Security Code
    • Seat Belt Reminder System
    • Cat Grade with Advanced 2D
    • Cat Grade with 3D
  • GUARDING
    • Top Guard ISO 10262:1998 (Level II)
    • Front Guard (Mesh) ISO 10262:1998 (Level I)
    • Front Guard (Heavy Duty) ISO 10262:1998 (Level II)