305.5E2 CR Mini Excavator

305.5E2 CR Mini Hydraulic Excavator

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Overview

The Cat® 305.5E2 CR Mini Hydraulic Excavator delivers high performance, durability and versatility in a compact design to help you work in a variety of applications.

QUALITY
The durable hoods and frame and the compact radius design of the 305.5E2 let you work comfortably and confidently in confined areas. The operator environment includes a high quality suspension seat, easy to adjust armrests and 100% pilot controls which offer consistent and long-lasting controllabili...
EFFICIENCY
High Definition Hydraulic System provides a load sensing and flow sharing capability leading to operational precision, efficient performance and greater controllability. Power on Demand provides optimal efficiency and performance the moment you need it. This automatic system ensures fuel efficiency ...
VERSATILITY
Broad range of Cat Work Tools make the Cat Mini Excavator a versatile machine able to meet the requirements of any job site. Over 200 degrees of bucket rotation provides greater material retention during truck loading and easier flat wall digging without having to reposition the machine.
PERFORMANCE
Front shovel bucket orientation provides the operator with more ways to get the job done faster. COMPASS Control Panel is a standard feature that allows the operator to easily adjust auxiliary flows to achieve the optimal work tool performance, activate auto idle for improved fuel efficiency and uti...
SERVICEABILITY
Convenient service and maintenance requirements include ease of access to daily check points, 500 hour engine oil and filter change period, 500 hour grease interval on front implement, S·O·SSM oil sampling valve and overall long term durability.
SAFETY
All Cat Mini Excavators from 3.5 metric tons to 8 metric tons are ROPS, TOPS and Top Guard Level 1 certified and include the Cat Interlock (hydraulic lockout) System, a certified accumulator which allows for auxiliary pressure to be released, making connecting and disconnecting work tools safer and ...
QUALITY
The durable hoods and frame and the compact radius design of the 305.5E2 let you work comfortably and confidently in confined areas. The operator environment includes a high quality suspension seat, easy to adjust armrests and 100% pilot controls which offer consistent and long-lasting controllability.
EFFICIENCY
High Definition Hydraulic System provides a load sensing and flow sharing capability leading to operational precision, efficient performance and greater controllability. Power on Demand provides optimal efficiency and performance the moment you need it. This automatic system ensures fuel efficiency through appropriate engine rating to meet all operational needs as required.
VERSATILITY
Broad range of Cat Work Tools make the Cat Mini Excavator a versatile machine able to meet the requirements of any job site. Over 200 degrees of bucket rotation provides greater material retention during truck loading and easier flat wall digging without having to reposition the machine.
PERFORMANCE
Front shovel bucket orientation provides the operator with more ways to get the job done faster. COMPASS Control Panel is a standard feature that allows the operator to easily adjust auxiliary flows to achieve the optimal work tool performance, activate auto idle for improved fuel efficiency and utilize the security system to ensure protection of valuable assets with the simple touch of a button. The Site Reference System included in the COMPASS monitor provides output from pitch and roll sensors to aid in grading and level trenching. This impacts accuracy and productivity for job site finishing.
SERVICEABILITY
Convenient service and maintenance requirements include ease of access to daily check points, 500 hour engine oil and filter change period, 500 hour grease interval on front implement, S·O·SSM oil sampling valve and overall long term durability.
SAFETY
All Cat Mini Excavators from 3.5 metric tons to 8 metric tons are ROPS, TOPS and Top Guard Level 1 certified and include the Cat Interlock (hydraulic lockout) System, a certified accumulator which allows for auxiliary pressure to be released, making connecting and disconnecting work tools safer and easier, and a travel alarm. All of these safety features are standard on the E2 model lineup (travel alarm optional in Europe).

Undercarriage

Number of Track Rollers
4
Track Roller Type
Center Flange
Number of Carrier Rollers
1

Hydraulic System

Type
Load Sensing Hydraulics with Variable Displacement Piston Pump
Digging Force - Bucket
11445lb
Maximum Auxiliary Circuit - Primary - Flow
21.1gal/min
Maximum Auxiliary Circuit - Secondary - Flow
6.6gal/min
Maximum Auxiliary Circuit - Secondary - Pressure
3553psi
Maximum Auxiliary Circuit - Primary - Pressure
3553psi
Auxiliary Circuit - Secondary (174 bar/2,524 psi)
6.6gal/min
Auxiliary Circuit - Primary (186 bar/2,734 psi)
21.1gal/min
Pump Flow at 2,400 rpm
39.6gal/min
Digging Force - Stick - Long
5575lb
Operating Pressure - Swing
3132psi
Operating Pressure - Equipment
3553psi
Digging Force - Stick - Standard
6500lb
Operating Pressure - Travel
3553psi

Certification - Cab and Canopy

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

Air Conditioning System

Air Conditioning
The air conditioning system on this machine contains the fluorinated greenhouse gas refrigerant R134a (Global Warming Potential = 1430). The system contains 1.0 kg of refrigerant which has a CO2 equivalent of 1.4 metric tonnes.

Lift Capacities at Ground Level - Lift Point Radius: 3000 mm (9'8”)

Blade Down - Front
5710lb
Blade Down - Side
2844lb
Blade Up - Side
2535lb
Blade Up - Front
3417lb

Dimensions - Long Stick

Boom Height - Shipping Position
85in
O/A Undercarriage Length
102in
Boom In Reach
100in
O/A Track Width
78in
Maximum Reach
243in
Track Belt/Shoe Width
16in
Boom Swing - Left
27in
Maximum Dig Height
220in
Swing Bearing - Height
24in
Tail Swing
44in
Maximum Blade Height
16in
Maximum Reach - Ground Level
237in
Maximum Dump Clearance
161in
Maximum Blade Depth
22in
Vertical Wall
107in
O/A Shipping Height
100in
O/A Shipping Length
215in
Boom Swing - Right
31in
Dig Depth
152in

Engine

Emissions
Meets U.S. EPA Tier 4 Final/EU Stage IIIA emission standards.
Gross Power - ISO 14396
45.7HP
Displacement
146in³
Stroke
4in
Bore
3.4in
Net Power - 2,200 rpm - ISO 9249/EEC 80/1269
44.1HP
Engine Model
Cat® C2.4
Net Power
44.1HP

Swing System

Note
*Automatic swing brake, spring applied, hydraulic release.
Boom Swing - Left - Without Stop*
80°
Boom Swing - Left - With Stop*
60°
Machine Swing Speed
10r/min
Boom Swing - Right
50°

Cab

Exterior Sound Power Level - ISO 6395:2008*
97dB(A)
Note
*European Union Directive “2000/14/EC”
Dynamic Operator Sound Pressure Level (ISO 6396:2008)
81dB(A)

Dimensions - Standard Stick

Maximum Reach
228in
Swing Bearing - Height
24in
Maximum Dump Clearance
150in
O/A Track Width
78in
Boom Swing - Left
27in
Boom Height - Shipping Position
69in
Tail Swing
44in
Vertical Wall
92in
Maximum Dig Height
210in
Boom Swing - Right
31in
Maximum Reach - Ground Level
222in
O/A Shipping Length
210in
Maximum Blade Height
16in
O/A Undercarriage Length
102in
Track Belt/Shoe Width
16in
Maximum Blade Depth
22in
Dig Depth
137in
O/A Shipping Height
100in
Boom In Reach
94in

Travel System

Gradeability - Maximum
30°
Ground Pressure - Cab
4.6psi
Ground Pressure - Canopy
4.5psi
Travel Speed - Low
2.05mile/h
Maximum Traction Force - Low Speed
10746lb
Maximum Traction Force - High Speed
6025lb
Travel Speed - High
2.36mile/h

Weights*

Weight - Canopy, Long Stick
11596lb
Weight - Cab, Standard Stick
11863lb
Note
*Weight includes counterweight, rubber tracks, bucket, operator, full fuel and auxiliary lines.
Weight - Cab, Long Stick
11958lb
Weight - Canopy, Standard Stick
11503lb
Operating Weight
11958lb

Lift Capacities at Ground Level - Lift Point Radius: 4500 mm (14'9”)

Blade Down - Side
1521lb
Blade Up - Front
1808lb
Blade Up - Side
1367lb
Blade Down - Front
3042lb

Operating Specifications

Stick Length - Standard
55in
Counterweight
364.4lb
Stick Length - Long
70in

Service Refill Capacities

Hydraulic System
20.6gal (US)
Engine Oil
2.5gal (US)
Cooling System
2.8gal (US)
Fuel Tank
16.6gal (US)
Hydraulic Tank
18gal (US)

Blade

Height
14.8in
Dig Depth
21.9in
Lift Height
15.9in
Width
78in

Standard/Optional Features

Standard Equipment:

  • 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)
  • Technology
    • Product Link

Optional Equipment:

  • 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
  • Other Attachments
    • Counterweight, extra

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