308E2 CR Mini Hydraulic Excavator with Swing Boom

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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: 65.0 hp
Bore: 3.7 in
Displacement: 203.2 in3
Gross Power (ISO 14396): 66.6 hp
Net Power (ISO 9249): 65.0 hp
Rated Net Power @ 2,400 rpm (ISO 9249/EEC 80/1269): 65.0 hp
Stroke: 4.7 in
Emissions: Meets U.S. EPA Tier 4 Final and EU Stage IIIB emission standards.

Weights

Operating Weight: 18519.0 lb
Operating Weight with Cab: 18519.0 lb
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

Ground Pressure: 5.26 psi
Gradeability (maximum): 30°
Maximum Traction Force – High Speed: 8408 lb
Maximum Traction Force – Low Speed: 14500 lb
Travel Speed – High: 3.17 mph
Travel Speed – Low: 1.74 mph
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 – Stick (long): 7891.0 lb
Digging Force – Bucket: 13534.0 lb
Digging Force – Stick (standard): 9015.0 lb
Auxiliary Circuit – Primary (280 bar/4,061 psi): 33.8 gal/min
Auxiliary Circuit – Secondary (280 bar/4,061 psi): 16.9 gal/min
Operating Pressure – Equipment: 4061.0 psi
Operating Pressure – Swing: 3481.0 psi
Operating Pressure – Travel: 4061.0 psi
Pump Flow at 2,000 rpm: 39.6 gal/min
Note: Load sensing hydraulics with variable displacement piston pump.

Swing System

Machine Swing Speed: 11.0 rpm
Boom Swing – Right: 50°
Boom Swing – Left: 60°
Note: Automatic swing break, spring applied, hydraulic release.

Blade

Width: 91.3 in
Height: 17.7 in
Dig Depth: 14.2 in
Lift Height: 15.0 in

Service Refill Capacities

Cooling System: 3.7 gal
Engine Oil: 3.0 gal
Hydraulic Tank: 21.7 gal
Fuel Tank: 33.0 gal
Hydraulic System: 24.8 gal

Operating Specifications

Counterweight: 551.0 lb
Machine Overhang: 11.0 in
Machine Overhang with Counterweight: 16.0 in
Maximum Dig Depth: 13.62 ft
Stick Length – Long: 7.25 ft
Stick Length – Standard: 5.50 ft

Cab

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

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
- 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)

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.)