308E2 CR Mini Hydraulic Excavator with Swing Boom

US
Metric

Overview

The Cat® 308E2 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® C3.3B
Net Power
65.00 hp
48.50 kW
Bore
3.70 in
94.00 mm
Displacement
203.20 in3
3.33 L
Gross Power (ISO 14396)
66.60 hp
49.70 kW
Net Power (ISO 9249)
65.00 hp
48.50 kW
Rated Net Power @ 2,400 rpm (ISO 9249/EEC 80/1269)
65.00 hp
48.50 kW
Stroke
4.70 in
120.00 mm

Weights

Operating Weight
18519.00 lb
8400.00 kg
Operating Weight - With Cab
18519.00 lb
8400.00 kg

Travel System

Ground Pressure
5.26 psi
36.30 kPa
Gradeability (maximum)
30°
Maximum Traction Force – High Speed
8408.00 lb
37.40 kN
Maximum Traction Force – Low Speed
14500.00 lb
64.50 kN
Maximum Traction Force - High Speed
8408.00 lb
37.40 kN
Maximum Traction Force - Low Speed
14500.00 lb
64.50 kN

Hydraulic System

Operating Pressure - Travel
4061.00 psi
28000.00 kPa
Operating Pressure - Swing
3481.00 psi
24000.00 kPa
Digging Force – Stick (standard)
9015.00 lb
40.10 kN
Auxiliary Circuit - Primary (280 bar/4,061 psi)
33.80 gal/min
128.00 l/min
Auxiliary Circuit - Secondary (280 bar/4,061 psi)
16.90 gal/min
64.00 l/min
Operating Pressure – Equipment
4061.00 psi
28000.00 kPa
Operating Pressure – Swing
3481.00 psi
24000.00 kPa
Operating Pressure – Travel
4061.00 psi
28000.00 kPa
Pump Flow at 2,000 rpm
39.60 gal/min
150.00 l/min

Swing System

Machine Swing Speed
11.00 rpm
11.00 rpm
Boom Swing – Right
50°
Boom Swing – Left
60°

Blade

Width
91.30 in
2320.00 mm
Height
17.70 in
450.00 mm
Dig Depth
14.20 in
360.00 mm
Lift Height
15.00 in
380.00 mm

Service Refill Capacities

Cooling System
3.70 gal
14.00 L
Engine Oil
3.00 gal
11.20 L
Hydraulic Tank
21.70 gal
82.00 L
Fuel Tank
33.00 gal
125.00 L
Hydraulic System
24.80 gal
94.00 L

Operating Specifications

Counterweight
551.00 lb
251.00 kg
Machine Overhang
11.00 in
279.40 mm
Machine Overhang with Counterweight
16.00 in
406.00 mm
Maximum Dig Depth
13.62 ft
4150.00 mm
Stick Length – Long
7.25 ft
2210.00 mm
Stick Length – Standard
5.50 ft
1670.00 mm

Cab

Average Exterior Sound Pressure
99 dB(A) ISO 6395 – Dynamic Test
Dynamic Operator Sound Pressure
70 dB(A) ISO 6396

Engine

Emissions
Meets U.S. EPA Tier 4 Final and EU Stage IIIB emission standards.

Weights

Note
Weight with rubber tracks, bucket, operator (75 kg/165 lb), full fuel and auxiliary lines.
Note
Weight varies depending on machine configuration.

Swing System

Note
Automatic swing break, spring applied, hydraulic release.

Travel System

Note
Each track is driven by one independent 2-speed motor.
Note
Drive modules are integrated into the roller frame for total protection.
Note
Straight line travel when tracking and operating the front linkage simultaneously.

Hydraulic System

Note
Load sensing hydraulics with variable displacement piston pump.

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 1.3 kg (2.9 lb) of refrigerant which has a CO2 equivalent of 1.9 metric tonnes (4,189 lb).

Engine

Engine Model
Cat® C3.3B
Net Power
65.00 HP
48.50 kW
Bore
3.70 in
94.00 mm
Displacement
203.20 in³
3.33 l
Gross Power - ISO 14396
66.60 HP
49.70 kW
Net Power - ISO 9249
65.00 HP
48.50 kW
Rated Net Power - 2,400 rpm - ISO 9249/EEC 80/1269
65.00 HP
48.50 kW
Stroke
4.70 in
120.00 mm

Weights

Operating Weight
18519.00 lb
8400.00 kg

Travel System

Ground Pressure
5.26 psi
36.30 kPa
Gradeability - Maximum
30°
Travel Speed - High
3.17 mile/h
5.10 km/h
Travel Speed - Low
1.74 mile/h
2.80 km/h

Hydraulic System

Digging Force - Bucket
13534.00 lb
60.20 kN
Digging Force - Stick - Long
7891.00 lb
35.10 kN
Digging Force - Stick - Standard
9015.00 lb
40.10 kN
Operating Pressure - Equipment
4061.00 psi
28000.00 kPa

Swing System

Machine Swing Speed
11.00 r/min
11.00 r/min
Boom Swing - Left
60°
Boom Swing - Right
50°

Blade

Width
91.30 in
2320.00 mm

Service Refill Capacities

Cooling System
3.70 gal (US)
14.00 l
Engine Oil
3.00 gal (US)
11.20 l
Hydraulic Tank
21.70 gal (US)
82.00 l
Fuel Tank
33.00 gal (US)
125.00 l
Hydraulic System
24.80 gal (US)
94.00 l

Operating Specifications

Maximum Dig Depth
13.62 ft
4150.00 mm
Stick Length - Long
7.25 ft
2210.00 mm
Stick Length - Standard
5.50 ft
1670.00 mm

Engine

Emissions
Meets U.S. EPA Tier 4 Final and EU Stage IIIB emission standards.

Hydraulic System

Note
Load sensing hydraulics with variable displacement piston pump.

Swing System

Note
Automatic swing break, spring applied, hydraulic release.

Travel System

Note (1)
Each track is driven by one independent 2-speed motor.
Note (2)
Drive modules are integrated into the roller frame for total protection.
Note (3)
Straight line travel when tracking and operating the front linkage simultaneously.

Weights

Note (1)
Weight with rubber tracks, bucket, operator (75 kg/165 lb), full fuel and auxiliary lines.
Note (2)
Weight varies depending on machine configuration.
Features

QUALITY

  • The durable hoods and frame and the compact radius design of the 308E2 CR 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.
  • 180 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.
  • Rearview camera improves operator productivity and efficiency through increased visibility, making work easier to complete.

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 II 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).
Sales Features

Compact Radius

Work in the tightest spaces.

Operator Station

Superior comfort to keep you productive throughout the work day.

COMPASS Control Panel

Complete, Operational, Maintenance, Performance and Security System.

Performance and Controllability

Powerful digging combined with smooth responsive control.

Undercarriage

Excellent stability.

Engine and Serviceability

Superior power with easy access and minimal maintenance requirements keep you working.

Work Tools

Matched to meet your application needs.
Standard Equipment
  • ENGINE
    • Cat C3.3B diesel engine (meets U.S. EPA Tier 4 Final/EU Stage IIIB emission standards)
    • 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
    • Air conditioning/heat
    • COMPASS: complete, operation, maintenance, performance and security system
      • Multiple languages
    • Cup holder
    • High back suspension seat, heated
    • Hydraulic neutral lockout bar
    • Interior light
    • Literature holder
    • Pattern changer (optional in Europe)
    • Radio (optional in Europe)
    • Site reference system: leveling
    • Tool storage area
    • Travel control pedals with hand levers
    • Washable floor mat
    • Windshield wiper
  • UNDERCARRIAGE
    • Dozer blade with float function
    • Track, rubber belt, 450 mm (18 in) width
    • Tie down eyes on track frame
    • Towing eye on base frame
  • FRONT LINKAGE
    • 180 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
    • Cab and boom light with time delay capability
    • Mirror, rear view, cab left
  • SAFETY AND SECURITY
    • Anti-theft system (COMPASS)
    • Caterpillar Corporate “One Key” System
    • Door locks
    • Lockable fuel cap
    • Rearview camera
    • Retractable seat belt
    • Roll Over Protective Structure (ROPS) (ISO 12117-2)
    • Tip Over Protective Structure (TOPS) (ISO 12117)
    • Top guard – ISO 10262 (Level II)
    • Travel alarm (optional in Europe)
Optional Equipment
  • ENGINE
    • Engine block heater
  • HYDRAULIC SYSTEM
    • Quick coupler lines
    • Boom lowering check valve (Standard on VAB configuration.)
    • Stick lowering check valve (Standard on VAB configuration.)
    • Secondary auxiliary hydraulic lines (Standard on VAB configuration.)
  • UNDERCARRIAGE
    • Blade, weld on
    • Track, triple grouser (steel), 450 mm (18 in)
    • Track, triple grouser (steel) with rubber pad, 450 mm (18 in)
    • Track, triple grouser (steel), 600 mm (24 in)
  • FRONT LINKAGE
    • Quick coupler: manual or hydraulic
    • Thumb
    • Buckets
    • Full range of performance matched work tools
      • Auger, hammer, shear, ripper
  • LIGHTS AND MIRRORS
    • Mirror, cab rear
  • SAFETY AND SECURITY
    • Battery disconnect
    • Front wire mesh guard
    • Front steel plate guard
    • Rain guard
  • TECHNOLOGY
    • Product Link™
  • OTHER ATTACHMENTS
    • Counterweight, extra, 1121 kg (2,493 lb) (Standard on VAB configuration.)