305E2 CR Mini Hydraulic Excavator

The Cat® 305E2 CR Mini Hydraulic Excavator delivers high performance, durability and versatility in a compact design to help you work in a variety of applications.

Engine

Engine Model: Cat® C2.4
Net Power: 40.2 hp
Rated Net Power @ 2,200 rpm – ISO 9249/EEC 80/1269: 40.2 hp
Bore: 3.4 in
Stroke: 4 in
Displacement: 146 in3
Gross Power – ISO 14396: 41.8 hp
Emissions: Meets U.S. EPA Tier 4 Final/EU Stage IIIA emission standards.

Weights*

Operating Weight: 11443 lb
Weight – Canopy, Standard Stick: 10970 lb
Weight – Canopy, Long Stick: 11069 lb
Weight – Cab, Standard Stick: 11334 lb
Weight – Cab, Long Stick: 11443 lb
Note: *Weight includes counterweight, rubber tracks, bucket, operator, full fuel and auxiliary lines.

Travel System

Travel Speed – High: 2.7 mph
Travel Speed – Low: 1.7 mph
Max Traction Force – High Speed: 5418 lb
Max Traction Force – Low Speed: 10161 lb
Ground Pressure – Canopy: 4.3 psi
Ground Pressure – Cab: 4.4 psi
Gradeability (maximum): 30°

Hydraulic System

Pump Flow at 2,400 rpm: 39.6 gal/min
Operating Pressure – Equipment: 3553 psi
Operating Pressure – Travel: 3553 psi
Operating Pressure – Swing: 3132 psi
Auxiliary Circuit – Primary (186 bar/2,734 psi): 21.1 gal/min
Auxiliary Circuit – Secondary (174 bar/2,524 psi): 6.6 gal/min
Digging Force – Stick (standard): 5550 lb
Digging Force – Stick (long): 4788 lb
Digging Force – Bucket: 10050 lb
Type: Load Sensing Hydraulics with Variable Displacement Piston Pump

Swing System

Machine Swing Speed: 10 rpm
Boom Swing – Left* (without stop): 80°
Boom Swing – Left* (with stop): 60°
Boom Swing – Right: 50°
Note: *Automatic swing brake, spring applied, hydraulic release.

Blade

Width: 78.0 in
Height: 14.8 in
Dig Depth: 21.9 in
Lift Height: 15.9 in

Service Refill Capacities

Cooling System: 2.8 gal
Engine Oil: 2.5 gal
Hydraulic Tank: 18 gal
Fuel Tank: 16.6 gal
Hydraulic System: 20.6 gal

Operating Specifications

Stick Length – Standard: 52 in
Stick Length – Long: 67 in

Cab

Dynamic Operator Sound Pressure Level (ISO 6396:2008): 81 dB(A)
Exterior Sound Power Level (ISO 6395:2008)*: 96 dB(A)
Note: *European Union Directive “2000/14/EC”

Certification – Cab and Canopy

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

Undercarriage

Number of Carrier Rollers: 3
Number of Track Rollers: 3
Track Roller Type: Triple Flange

Lift Capacities at Ground Level – Lift Point Radius: 3000 mm (9’8”)

Blade Down – Front: 5159 lb
Blade Up – Front: 3197 lb
Blade Down – Side: 2646 in
Blade Up – Side: 2359 in

Lift Capacities at Ground Level – Lift Point Radius: 4000 mm (13’1”)

Blade Down – Front: 2778 lb
Blade Up – Front: 1676 lb
Blade Down – Side: 1411 lb
Blade Up – Side: 1257 lb

Dimensions – Standard Stick

Dig Depth: 129 in
Vertical Wall: 91 in
Maximum Reach at Ground Level: 210 in
Maximum Reach: 220 in
Maximum Dig Height: 207 in
Maximum Dump Clearance: 129 in
Boom In Reach: 93 in
Tail Swing: 43 in
Maximum Blade Height: 16 in
Maximum Blade Depth: 22 in
Boom Height in Shipping Position: 69 in
O/A Shipping Height: 100 in
Swing Bearing Height: 24 in
O/A Undercarriage Length: 102 in
O/A Shipping Length: 204 in
Boom Swing Right: 31 in
Boom Swing Left: 27 in
Track Belt/Shoe Width: 16 in
O/A Track Width: 78 in

Dimensions – Long Stick

Dig Depth: 144 in
Vertical Wall: 104 in
Maximum Reach at Ground Level: 229 in
Maximum Reach: 235 in
Maximum Dig Height: 214 in
Maximum Dump Clearance: 154 in
Boom In Reach: 100 in
Tail Swing: 43 in
Maximum Blade Height: 16 in
Maximum Blade Depth: 22 in
Boom Height in Shipping Position: 85 in
O/A Shipping Height: 100 in
Swing Bearing Height: 24 in
O/A Undercarriage Length: 102 in
O/A Shipping Length: 208 in
Boom Swing Right: 31 in
Boom Swing Left: 27 in
Track Belt/Shoe Width: 16 in
O/A Track Width: 78 in

ENGINE
- Cat C2.4 diesel engine (meets U.S. EPA Tier 4 Final emission standards for North America and EU Stage IIIA/Tier 4 Interim emission standards for all other regions)
- Automatic engine idle
- Automatic engine shut-off
- Automatic two speed travel
- Diesel Particulate Filter (North America only)
- Diesel Oxidation Catalyst (North America only)
- Fuel and water separator
- Power on demand
HYDRAULIC SYSTEM
- 1-way and 2-way (combined function)
- Accumulator
- Automatic swing parking brake
- Auxiliary hydraulic lines
- Adjustable auxiliary relief
- Auxiliary line quick disconnects
- Cat interlock system: hydraulic lockout
- Continuous auxiliary flow
- Ecology drain
- Hydraulic oil cooler
- High definition hydraulics
- Load sensing/flow sharing
OPERATOR ENVIRONMENT
- 100% pilot control ergonomic joysticks
- Adjustable armrests
- COMPASS: complete, operation, maintenance, performance and security system
  - Multiple languages
- Cup holder
- Hydraulic neutral lockout bar
- Literature holder
- Pattern changer (optional in Europe)
- Site reference system: leveling
- Tool storage area
- Travel control pedals with hand levers
- Washable floor mat
UNDERCARRIAGE
- Dozer blade with float function
- Track, rubber belt, 400 mm (16 in) width
- Tie down eyes on track frame
- Towing eye on base frame
FRONT LINKAGE
- 200 degree bucket rotation
- Certified lifting eye on bucket linkage (optional in Europe)
- Front shovel capable
- Thumb ready stick
ELECTRICAL
- 12 volt electrical system
- 60 ampere alternator
- 650 CCA maintenance free battery
- Fuse box
- Ignition key start/stop switch
- Slow blow fuse
- Warning horn
LIGHTS AND MIRRORS
- Boom light with time delay capability
SAFETY AND SECURITY
- Anti-theft system (COMPASS)
- Caterpillar Corporate “One Key” System
- Door locks
- Lockable fuel cap
- Retractable seat belt
- Roll Over Protective Structure (ROPS) (ISO 12117-2)
- Tip Over Protective Structure (TOPS) (ISO 12117)
- Top guard – ISO 10262 (Level 1)
- Travel alarm (optional in Europe)

ENGINE
- Engine block heater
HYDRAULIC SYSTEM
- Quick coupler lines
- Boom lowering check valve
- Stick lowering check valve
- Secondary auxiliary hydraulic lines
OPERATOR ENVIRONMENT
- Cab:
  - Air conditioning
  - Heat
  - High back suspension seat
  - Interior light
  - Interlocking front window system
  - Radio
  - Windshield wiper
UNDERCARRIAGE
- Power angle blade
- Track, double grouser (steel), 400 mm (16 in)
- Track, double grouser (steel) with rubber pad, 400 mm (16 in)
FRONT LINKAGE
- Quick coupler: manual or hydraulic
- Thumb
- Buckets
- Full range of performance matched work tools
  - Auger, hammer, ripper
LIGHTS AND MIRRORS
- Light, cab with time delay capability
- Mirror, canopy right
- Mirror, canopy left
- Mirror, cab rear
SAFETY AND SECURITY
- Battery disconnect
- Beacon socket
- Front wire mesh guard
- Rearview camera
- Vandal guard
TECHNOLOGY
- Product Link^™