308 CR Mini Hydraulic Excavator

Overview
Boom Swing - Left
60 degrees
Engine Model
Cat C3.3B
Net Power
70 HP
  • Exterior View
  • Interior View

Swing System

Boom Swing - Left
60 degrees
Machine Swing Speed
11 r/min
Boom Swing - Right
50 degrees

Engine

Engine Model
Cat C3.3B
Net Power
70 HP
Bore
4 in
Displacement
203 in³
Gross Power - ISO 14396
74 HP
Rated Net Power - 2,200 rpm - EU Stage V - ISO 9249/EEC 80/1269
72 HP
Rated Net Power - 2,200 rpm - U.S. EPA Tier 4 Final - ISO 9249/EEC 80/1269
70 HP
Stroke
5 in

Weights

Operating Weight
20,678 lb
Maximum Operating Weight with Cab**
20,077 lb
Minimum Operating Weight with Cab*
18,610 lb
Note (1)
*Minimum Weight is based on rubber tracks, no counterweight, operator, full fuel tank, standard stick, blade and no bucket.
Note (2)
**Maximum Weight is based on steel tracks with rubber pads, counterweight, operator, full fuel tank, long stick, blade and no bucket.

Blade

Height
17 in
Width - Standard
91 in
Width - Wide
97 in

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 1.430 metric tonnes.

Certification - Cab

Roll Over Protective Structure (ROPS)
ISO 12117-2:2008
Tip Over Protective Structure (TOPS)
ISO 12117:1997
Top Guard
ISO 10262:1998 (Level II)

Dimensions - Long Stick

Boom In Reach
127 in
Boom Swing - Left
24 in
Boom Swing - Right
37 in
Cab Height
100 in
Dig Depth
183 in
Ground Clearance
14 in
Maximum Blade Depth
16 in
Maximum Blade Height
15 in
Maximum Dig Height
277 in
Maximum Dump Clearance
200 in
Maximum Reach
301 in
Maximum Reach - Ground Level
294 in
O/A Shipping Length
262 in
O/A Track Width
91 in
O/A Undercarriage Length
113 in
Stick Length
93 in
Swing Bearing - Height
30 in
Tail Swing with Counterweight
65 in
Tail Swing without Counterweight
57 in
Track Belt/Shoe Width
18 in
Transport Height
99 in
Vertical Wall
134 in

Dimensions - Standard Stick

Boom In Reach
120 in
Boom Swing - Left
24 in
Boom Swing - Right
37 in
Cab Height
100 in
Dig Depth
162 in
Ground Clearance
14 in
Maximum Blade Depth
16 in
Maximum Blade Height
15 in
Maximum Dig Height
265 in
Maximum Dump Clearance
187 in
Maximum Reach
281 in
Maximum Reach - Ground Level
274 in
O/A Shipping Length
259 in
O/A Track Width
91 in
O/A Undercarriage Length
113 in
Stick Length
72 in
Swing Bearing - Height
30 in
Tail Swing with Counterweight
65 in
Tail Swing without Counterweight
57 in
Track Belt/Shoe Width
18 in
Transport Height
98 in
Vertical Wall
118 in

Hydraulic System

Auxiliary Circuit - Primary - Flow
35 gal/min
Auxiliary Circuit - Primary - Pressure
4,134 psi
Auxiliary Circuit - Secondary - Flow
9 gal/min
Auxiliary Circuit - Secondary - Pressure
4,134 psi
Digging Force - Bucket
13,946 lb
Digging Force - Stick - Long
8,032 lb
Digging Force - Stick - Standard
9,509 lb
Operating Pressure - Equipment
4,134 psi
Operating Pressure - Swing
3,626 psi
Operating Pressure - Travel
4,134 psi
Pump Flow at 2,400 rpm
44 gal/min
Type
Load Sensing Hydraulics with Variable Displacement Piston Pump

Service Refill Capacities

Cooling System
3 gal (US)
Engine Oil
3 gal (US)
Fuel Tank
39 gal (US)
Hydraulic System
29 gal (US)
Hydraulic Tank
14 gal (US)

Sound

Average Exterior Sound Pressure (ISO 6395:2008)
99 dB(A)
Note
European Union Directive “2000/14/EC”
Operator Sound Pressure (ISO 6396:2008)
72 dB(A)

Travel System

Gradeability - Maximum
30 degrees
Ground Pressure - Maximum Weight
6 psi
Ground Pressure - Minimum Weight
5 psi
Maximum Traction Force - High Speed
6,250 lb
Maximum Traction Force - Low Speed
15,175 lb
Travel Speed - High
3 mile/h
Travel Speed - Low
2 mile/h

Weight Increase from Minimum Configuration

Counterweight
552 lb
Long Stick
146 lb
Steel Tracks with Pads
752 lb

ALL DAY COMFORT

  • A sealed and pressurized cab is equipped with an improved air conditioning system, adjustable wrist rests and a suspension seat to help keep you working comfortably all day long.

EASY TO OPERATE

  • Controls are easy to use and the intuitive Next Generation Monitor provides customizable machine operator preferences and easy to read machine information.

STICK STEER TRAVEL MODE

  • Moving around the job site is even easier with the Cat Stick Steer option. Easily switch from traditional travel controls with levers and pedals to joystick controls with a push of a button. The benefit of less effort and improved control is in your hands!

BIG PERFORMANCE IN A MINI DESIGN

  • Increased lifting, swinging, travel and multi-functioning performance helps you get the job done more efficiently, and dig-to-blade allows for easy clean up.

SAFETY ON THE JOB SITE

  • Your safety is our top priority. The Cat Mini Excavator is designed to help keep you safe on the job. A back-up camera, courtesy work lights and a fluorescent retractable seat belt are just a few of the safety features we’ve built into the machine.

SIMPLE SERVICE FOR LESS DOWNTIME

  • Maintenance is quick and easy on the Cat Mini Excavator. Routine check points are easy to access at ground level with grouped service points and robust service panels.

LOWER OPERATING COSTS

  • Equipped with features such as auto idle, auto engine shutdown, and efficient hydraulics with a variable displacement pump, the Cat Mini Excavator was designed with reducing your operating costs in mind.
  • Engine
    • Cat C3.3B Diesel Engine (U.S. EPA Tier 4 Final/EU Stage V) – Electronic Engine, Turbo, Diesel Particulate Filter (DPF)
    • Automatic Two Speed Travel
    • Extended Life Coolant, –37° C (–35° F)
    • Radial Seal – Double Element Air Filter
    • Fuel Water Separator with Indicator
    • Ecology Drain
    • Automatic Swing Brake
    • Automatic Engine Shutdown
    • Automatic Engine Idle
  • Hydraulics
    • Load Sensing/Flow Sharing Hydraulics
    • Variable Displacement Piston Pump
    • HYDO Advanced Hydraulic Oil
    • Hydraulic Temperature Monitoring
    • Power On Demand
    • Certified Accumulator
    • Smart Tech Electronic Pump
  • Operator Environment
    • 12V Power Socket
    • Rear Window Emergency Exit
    • Mounting Bosses for Top and Front Guards
    • Hydraulic Lockout Controls
    • Radio – Bluetooth®, USB, Auxiliary, Microphone
    • Assisted Front Window Overhead Storage
    • Travel Cruise Control
    • Fabric, High Back, Suspension Seat
    • Cup Holder
    • Control Pattern Changer
    • TOPS – ISO 12117:1997
    • Travel Pedals and Hand Levers
    • Literature Holder
    • Removable, Washable Floor Mat
    • Adjustable Wrist Rests
    • LED Interior Light
    • Retractable Seat Belt (75 mm/3 in)
    • ROPS – ISO 12117-2:2008
    • Color LCD Monitor
      – Fuel Level and Coolant Temperature Gauges
      – Maintenance and Machine Monitoring
      – Performance and Machine Adjustments
      – Numeric Security Code
      – Multiple Languages
      – Camera Ready
      – Hour Meter with Wake Up Switch
      – Jog Dial Control Interface
    • Skylight
    • Stick Steer Mode
    • Cat Key with Passcode Option
    • Coat Hook
    • Top Guard – ISO 10262:1998 (Level II)
    • Sealed and Pressurized Cab
    • HVAC with Automatic Temperature Control
    • Integrated Lower Front Window
    • Molded Footrests
    • Operator Sound Pressure 72 dB(A) ISO 6396:2008
  • Undercarriage
    • Dozer Blade
    • Hydraulic Track Adjusters
    • Tie Down Eyes on Track Frame
    • Dozer Float
    • Greased and Lubricated Track
    • Bolt-on, Reversible Wear Edge
    • Rubber Tracks
  • Boom, Stick And Linkages
    • One Piece Boom (3400 mm/133.9 in)
    • Standard Stick (1820 mm/71.7 in)
    • Long Stick (2360 mm/92.9 in)
    • Front Shovel Capable (Pin-On/Manual Coupler/Hydraulic Coupler – not available in all regions)
    • Thumb Ready (not available in all regions)
    • Certified Lifting Eye (not available in all regions)
  • Electrical
    • 12 Volt Electrical System
    • 60 Ampere Alternator
    • 900 CCA Maintenance Free Battery
    • Circuit Breaker
    • Ignition Key Stop Switch
    • Signaling/Warning Horn
    • Product Link Elite Lite (regulations apply)
    • Travel Alarm
  • Operator Environment
    • Rain Visor
    • Air Suspension Heated Seat
  • Electrical
    • Rearview Camera
    • Rotating Beacon
  • Other
    • 2nd Auxiliary Hydraulic Lines with Case Drain
    • Additional Counterweight
    • Boom and Stick Hose Burst Check Valves
    • Bucket Linkage with Lift Eye
    • Track Guides
    • Steel Tracks (450 mm/17.7 in wide)
    • Steel Track with Rubber Pads
    • Wide Steel Tracks (600 mm/23.6 in)
    • Attachments including Buckets, Augers and Hammers
    • Water Jacket Heater
    • Wide Dozer Blade
    • Refueling Pump
    • Variable Angle Boom (please see 308 CR VAB brochure for VAB specs and additional information)
    • Cab Guarding

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