308E2 CR

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Specifications

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

Net Power

48.5 kW

Engine Model

Cat® C3.3B

Bore

94.0 mm

Stroke

120.0 mm

Displacement

3.33 L

Gross Power (ISO 14396)

49.7 kW

Net Power (ISO 9249)

48.5 kW

Rated Net Power @ 2,400 rpm (ISO 9249/EEC 80/1269)

48.5 kW

Emissions

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

Weights

Operating Weight with Cab

8400.0 kg

Operating Weight

8400.0 kg

Note

Weight with rubber tracks, bucket, operator (75 kg/165 lb), full fuel and auxiliary lines.

Note

Weight varies depending on machine configuration.

Travel System

Travel Speed – High

5.1 km/h

Travel Speed – Low

2.8 km/h

Ground Pressure

36.3 kPa

Maximum Traction Force – High Speed

37.4 kN

Maximum Traction Force – Low Speed

64.5 kN

Gradeability (maximum)

30°

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

Digging Force – Bucket

60.2 kN

Digging Force – Stick (long)

35.1 kN

Digging Force – Stick (standard)

40.1 kN

Pump Flow at 2,000 rpm

150.0 L/min

Operating Pressure – Equipment

28000.0 kPa

Operating Pressure – Travel

28000.0 kPa

Operating Pressure – Swing

24000.0 kPa

Auxiliary Circuit – Primary (186 bar/2,734 psi)

128.0 L/min

Auxiliary Circuit – Secondary (174 bar/2,524 psi)

64.0 L/min

Note

Load sensing hydraulics with variable displacement piston pump.

Swing System

Boom Swing – Right

50°

Machine Swing Speed

11.0 rpm

Boom Swing – Left

60°

Note

Automatic swing break, spring applied, hydraulic release.

Blade

Width

2320.0 mm

Height

450.0 mm

Lift Height

380.0 mm

Dig Depth

360.0 mm

Service Refill Capacities

Hydraulic Tank

82.0 L

Fuel Tank

125.0 L

Hydraulic System

94.0 L

Engine Oil

11.2 L

Cooling System

14.0 L

Operating Specifications

Maximum Dig Depth

4150.0 mm

Stick Length – Standard

1670.0 mm

Stick Length – Long

2210.0 mm

Machine Overhang

279.4 mm

Machine Overhang with Counterweight

406.0 mm

Counterweight

251.0 kg

Cab

Dynamic Operator Sound Pressure

70 dB(A) ISO 6396

Average Exterior Sound Pressure

99 dB(A) ISO 6395 – Dynamic Test

Benefits & Features

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).

Equipment

Array 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)

Array 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.)

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OVERVIEW

Array Standard equipment

Array Optional equipment

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