305 CR Mini Hydraulic Excavator

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

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Engine

Net Power 45HP
Engine Model C1.7 Turbo
Net Power - 2,400 rpm - ISO 9249, 80/1269/EEC 45HP
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.
Gross Power - 2,400 rpm - SAE J1995:2014 48.4HP
Stroke 3.9in
Bore 3.3in
Displacement 101in³
Emissions Meets U.S. EPA Tier 4 Final emission standards.

Weights

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

Dimensions - Long Stick

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

Swing System

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

Dimensions - Standard Stick

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

Service Refill Capacities

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

Travel System

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

Blade

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

Sound

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

Hydraulic System

Auxiliary Circuit - Secondary - Pressure 3843psi
Pump Flow at 2,400 rpm 35gal/min
Operating Pressure - Swing 2901psi
Operating Pressure - Travel 3843psi
Auxiliary Circuit - Secondary - Flow 7gal/min
Digging Force - Stick - Standard 6362lbf
Auxiliary Circuit - Primary - Pressure 3843psi
Auxiliary Circuit - Primary - Flow 21gal/min
Digging Force - Bucket 11061lbf
Operating Pressure - Equipment 3843psi
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 5665lbf

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

Weight Increase from Minimum Configuration

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

Sustainability

Recyclability 96%

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
Operator Environment
  • 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
  • Battery Disconnect
  • 12 Volt Power Socket
  • Travel Alarm (optional in some regions)

Optional Equipment

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
  • LED Front Lights
  • LED Front and Rear Lights
  • LED Boom Light
  • 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
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)
Guarding
  • Polycarbonate Half Height Front Guard (Canopy only)
  • Polycarbonate Front Guard (ISO 10262:1998 Level I and EN356 P5A)
  • Heavy Duty Front Guard ISO 10262:1998 Level II
  • Heavy Duty Top Guard 10262:1998 Level II (Cab only)
Other
  • Bio Oil Capable
  • Eco Drain
  • Water Jacket Heater
  • Counterweight (242 kg/534 lb)
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