308 CR VAB Mini Excavator

308 CR VAB Mini Hydraulic Excavator

Overview

The Cat® 308 CR Variable Angle Boom (VAB) Mini Excavator delivers maximum power and performance in a mini size to help you work in a wide range of applications. The Variable Angle Boom provides the maximum in linkage flexibility in tight applications.

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.
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.

Weights

Note (2)
**Maximum Weight is based on steel tracks with rubber pads, counterweight, operator, full fuel tank, long stick, blade and no bucket.
Maximum Operating Weight with Cab*
20906lb
Note
*Maximum Weight is based on steel tracks with rubber pads, counterweight, operator, full fuel tank, standard stick, blade and no bucket.
Minimum Operating Weight with Cab*
17960lb
Maximum Operating Weight with Cab**
20678lb
Note (1)
*Minimum Weight is based on rubber tracks, no counterweight, operator, full fuel tank, standard stick, blade and no bucket.
Operating Weight
20906lb

Dimensions - Standard Stick

Stick Length
71.8in
O/A Shipping Length
258.7in
Vertical Wall
117.8in
O/A Undercarriage Length
113.9in
Maximum Blade Height
14.5in
Cab Height
99.2in
Tail Swing without Counterweight
57.1in
Maximum Dump Clearance
187.4in
Ground Clearance
13.7in
Track Belt/Shoe Width
17.7in
Swing Bearing - Height
28.9in
Maximum Reach - Ground Level
273.6in
Tail Swing with Counterweight
64.8in
Boom In Reach
120.4in
Boom Swing - Right
38in
Dig Depth
161.8in
O/A Track Width
90.6in
Maximum Reach
281.1in
Maximum Dig Height
265.2in
Maximum Blade Depth
16.1in
Boom Swing - Left
20in
Transport Height
97.9in

Dimensions - Long Stick

Swing Bearing - Height
28.9in
Maximum Blade Height
14.5in
Boom Swing - Right
38in
Tail Swing with Counterweight
64.8in
Boom In Reach
126.6in
O/A Undercarriage Length
113.9in
Boom Swing - Left
20in
Stick Length
92.8in
Vertical Wall
134.1in
Cab Height
99.2in
O/A Shipping Length
262in
Ground Clearance
13.7in
Dig Depth
182.8in
Tail Swing without Counterweight
57.1in
Track Belt/Shoe Width
17.7in
Maximum Reach
300.7in
Maximum Dump Clearance
199.6in
Transport Height
99.3in
O/A Track Width
90.6in
Maximum Reach - Ground Level
293.7in
Maximum Blade Depth
16.1in
Maximum Dig Height
277.1in

Dimensions - VAB Out

Maximum Dig Height
321.9in
Cab Height
99.2in
Maximum Blade Height
14.5in
Boom Swing Left
20in
Tail Swing without Counterweight
57.1in
Vertical Wall
138.5in
Ground Clearance
13.7in
Maximum Dump Clearance
251.8in
Maximum Reach
311.8in
Overall Undercarriage Length
113.9in
Swing Bearing Height
28.9in
Track Belt/Shoe Width
17.7in
Stick Length
71.8in
Overall Shipping Length
282.7in
Dig Depth
136.3in
Overall Track Width
90.6in
Boom Swing Right
38in
Tail Swing with Counterweight
64.8in
Boom in Reach
117.9in
Transport Height
94.5in
Maximum Blade Depth
16.1in
Maximum Reach at Ground Level
305.1in

Travel System

Maximum Traction Force - Low Speed
15175lb
Ground Pressure - Minimum Weight
5psi
Gradeability - Maximum
30 degrees
Travel Speed - High
3.2mile/h
Travel Speed - Low
1.9mile/h
Maximum Traction Force - High Speed
6250lb
Ground Pressure - Maximum Weight
6psi

Dimensions - VAB In

Maximum Blade Depth
16.1in
Stick Length
71.8in
Maximum Reach
260.3in
Overall Undercarriage Length
113.9in
Cab Height
99.2in
Transport Height
105.2in
Overall Shipping Length
235in
Vertical Wall
133.4in
Maximum Dump Clearance
143.7in
Maximum Blade Height
14.5in
Track Belt/Shoe Width
17.7in
Boom Swing Left
20in
Maximum Dig Height
216.6in
Maximum Reach at Ground Level
252in
Tail Swing without Counterweight
57.1in
Overall Track Width
90.6in
Boom Swing Right
38in
Swing Bearing Height
28.9in
Ground Clearance
13.7in
Boom in Reach
112.3in
Tail Swing with Counterweight
64.8in
Dig Depth
154.5in

Certification - Cab

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

Hydraulic System

Digging Force - Stick - Long
8032lb
Pump Flow at 2,400 rpm
44gal/min
Auxiliary Circuit - Primary - Flow
35gal/min
Operating Pressure - Equipment
4134psi
Auxiliary Circuit - Primary - Pressure
4134psi
Auxiliary Circuit - Secondary - Pressure
4134psi
Operating Pressure - Swing
3626psi
Digging Force - Stick - Standard
9205lb
Type
Load Sensing Hydraulics with Variable Displacement Piston Pump
Auxiliary Circuit - Secondary - Flow
9gal/min
Operating Pressure - Travel
4134psi
Digging Force - Bucket
13946lb

Sound

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

Engine

Rated Net Power - 2,200 rpm - U.S. EPA Tier 4 Final - ISO 9249/EEC 80/1269
70.3HP
Rated Net Power - 2,200 rpm - EU Stage V - ISO 9249/EEC 80/1269
71.5HP
Displacement
203in³
Stroke
4.7in
Gross Power - ISO 14396
74.3HP
Bore
3.7in
Engine Model
Cat C3.3B
Net Power
70.3HP

Swing System

Machine Swing Speed
10.6r/min

Service Refill Capacities

Cooling System
2.6gal (US)
Fuel Tank
39gal (US)
Hydraulic Tank
14gal (US)
Hydraulic System
28gal (US)
Engine Oil
3gal (US)

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.

Weight Increase from Minimum Configuration

Long Stick
146lb
Steel Tracks with Pads
728lb
Counterweight
552lb

Blade

Width - Wide
96.5in
Width - Standard
90.6in
Height
17in

Standard/Optional Features

Standard Equipment:

  • Engine
    • Automatic Engine Shutdown
    • Cat C3.3B Diesel Engine (U.S. EPA Tier 4 Final/EU Stage V) – Electronic Engine, Turbo, Diesel Particulate Filter (DPF)
    • Fuel Water Separator with Indicator
    • Automatic Two Speed Travel
    • Automatic Swing Brake
    • Automatic Engine Idle
    • Ecology Drain
    • Radial Seal – Double Element Air Filter
    • Extended Life Coolant, –37° C (–35° F)
  • Hydraulics
    • Power On Demand
    • Certified Accumulator
    • Variable Displacement Piston Pump
    • Load Sensing/Flow Sharing Hydraulics
    • Hydro Advanced Hydraulic Oil
    • Hydraulic Temperature Monitoring
    • Smart Tech Electronic Pump
  • Operator Environment
    • Rear Window Emergency Exit
    • Molded Footrests
    • Hydraulic Lockout Controls
    • LED Interior Light
    • Travel Cruise Control
    • 12V Power Socket
    • Removable, Washable Floor Mat
    • Assisted Front Window Overhead Storage
    • Operator Sound Pressure 72 dB(A) ISO 6396:2008
    • Top Guard – ISO 10262:1998 (Level II)
    • Integrated Lower Front Window
    • Sealed and Pressurized Cab
    • Cat Key with Passcode Option
    • Literature Holder
    • Mounting Bosses for Top and Front Guards
    • ROPS – ISO 12117-2:2008
    • HVAC with Automatic Temperature Control
    • Stick Steer Mode
    • Fabric, High Back, Suspension Seat
    • 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
    • Radio – Bluetooth®, USB, Auxiliary, Microphone
    • Cup Holder
    • Retractable Seat Belt (75 mm/3 in)
    • Adjustable Wrist Rests
    • Skylight
    • TOPS – ISO 12117:1997
    • Travel Pedals and Hand Levers
    • Coat Hook
    • Control Pattern Changer
  • Undercarriage
    • Dozer Blade
    • Greased and Lubricated Track
    • Hydraulic Track Adjusters
    • Tie Down Eyes on Track Frame
    • Dozer Float
    • Bolt-on, Reversible Wear Edge
    • Rubber Tracks
  • Boom, Stick And Linkages
    • Variable Angle Boom
    • Standard Stick (1823 mm/71.8 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
    • 90 Ampere Alternator
    • 850 CCA Maintenance Free Battery
    • Circuit Breaker
    • Ignition Key Stop Switch
    • Signaling/Warning Horn
    • Product Link Elite Lite (regulations apply)

Optional Equipment:

  • Operator Environment
    • Rain Visor
    • Air Suspension Heated Seat
  • Electrical
    • Rotating Beacon
    • Rearview Camera
  • Other
    • 2nd Auxiliary Hydraulic Lines
    • Wide Dozer Blade
    • Wide Steel Tracks (600 mm/23.6 in)
    • Steel Track with Rubber Pads
    • Attachments including Buckets, Augers and Hammers
    • Steel Tracks (450 mm/17.7 in wide)
    • Boom and Stick Hose Burst Check Valves
    • Bucket Linkage with Lift Eye
    • Track Guides
    • Water Jacket Heater
    • Refueling Pump
    • Cab Guarding
    • Travel Alarm (standard in some regions)

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Operating Weight
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