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308 CR Mini Hydraulic Excavator

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Overview

The Cat^® 308 CR Mini Excavator delivers maximum power and performance in a mini size to help you work in a wide range of applications.

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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 Cat Stick Steer. 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 help you get the job done more efficiently, and blade float 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‚Äôve 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.

UNMATCHED DEALER SUPPORT

Your Cat dealer is here to help you reach your business goals. From providing equipment solutions to operator training to service needs and beyond, your Cat dealer is ready to help.

SUSTAINABILITY

The Cat® C3.3B engine meets U.S. EPA Tier 4 Final, EU Stage V, and Japan 2014 emission standards.
Cat diesel engines are required to use ULSD (ultra-low sulfur diesel fuel with 15 ppm of sulfur or less) or ULSD blended with the following lower-carbon intensity fuels up to: 20% biodiesel FAME (fatty acid methyl ester) * or 100% renewable diesel, HVO (hydrotreated vegetable oil) and GTL (gas-to-liquid) fuels. Refer to guidelines for successful application. Please consult your Cat dealer or “Caterpillar Machine Fluids Recommendations” (SEBU6250) for details.

Engine

Net Power: 69.5hp
Engine Model: Cat C3.3B
Stroke: 4.7in
Rated Net Power - 2,200 rpm - U.S. EPA Tier 4 Final - ISO 9249/EEC 80/1269: 70.3HP
Bore: 3.7in
Displacement: 203in³
Rated Net Power - 2,200 rpm - EU Stage V - ISO 9249/EEC 80/1269: 71.5HP
Gross Power - ISO 14396: 74.3HP
Gross Power - SAE J1995: 74.3hp
Rated Net Power - 2,200 rpm - U.S. EPA Tier 4 Final/EU Stage V - ISO 9249/EEC 80/1269: 69.5hp

Weights

Operating Weight: 18493lb
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.
Maximum Operating Weight with Cab**: 18493lb
Minimum Operating Weight with Cab*: 16542lb

Dimensions - Long Stick

Dig Depth: 182.8in
Boom Swing - Left: 23.8in
Maximum Dig Height: 277.1in
Maximum Blade Height: 14.6in
Track Belt/Shoe Width: 17.7in
Cab Height: 100in
Tail Swing with Counterweight: 62.4in
O/A Undercarriage Length: 113.4in
Maximum Dump Clearance: 199.7in
Transport Height: 99in
Boom Swing - Right: 36.8in
Maximum Blade Depth: 16in
Ground Clearance: 13.8in
Stick Length: 92.8in
Maximum Reach: 300.7in
Maximum Reach - Ground Level: 293.7in
O/A Shipping Length: 262in
Boom In Reach: 126.6in
Swing Bearing - Height: 29.7in
O/A Track Width: 90.6in
Tail Swing without Counterweight: 57.1in
Vertical Wall: 134in
Note: *Boom Height when stick is pinned in transport position with no attachments.
Note (2): ***With blade positioned at the rear of the machine.
Note (1): **Boom Height when stick is pinned in working position with attachments. Standard Stick offers only one pin position.
Height - Boom Transport - No Tools*: 89in
Height - Boom Working - With Tools**: 120.1in
Overall Shipping Length - without Counterweight: 6872 mm (270.6 in)***
Overall Shipping Length - with Counterweight: 6872 mm (270.6 in)***

Blade

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

Swing System

Machine Swing Speed: 10.6r/min
Boom Swing - Right: 50 degrees
Boom Swing - Left: 60 degrees

Hydraulic System

Digging Force - Bucket: 13946lb
Operating Pressure - Travel: 4134psi
Operating Pressure - Swing: 3626psi
Operating Pressure - Equipment: 4134psi
Digging Force - Stick - Long: 8032lb
Type: Load Sensing Hydraulics with Variable Displacement Piston Pump
Auxiliary Circuit - Primary - Pressure: 4134psi
Auxiliary Circuit - Primary - Flow: 35gal/min
Pump Flow at 2,400 rpm: 44gal/min
Auxiliary Circuit - Secondary - Flow: 9gal/min
Digging Force - Stick - Standard: 9509lb
Auxiliary Circuit - Secondary - Pressure: 4134psi
Note: Flow and pressure are not combinable. Under load, as flow rises pressure goes down.
Maximum Auxiliary Circuit - Primary - Pressure at Pump: 4134psi
Maximum Auxiliary Circuit - Secondary - Pressure at Pump: 4134psi
Maximum Auxiliary Circuit - Primary - Flow at Pump: 35gal/min
Maximum Auxiliary Circuit - Secondary - Flow at Pump: 9gal/min

Dimensions - Standard Stick

Cab Height: 100in
Vertical Wall: 117.8in
Boom In Reach: 120.4in
Tail Swing with Counterweight: 62.4in
Boom Swing - Right: 36.8in
Track Belt/Shoe Width: 17.7in
Maximum Reach: 281.1in
Stick Length: 71.7in
Transport Height: 98in
Maximum Blade Height: 14.6in
Boom Swing - Left: 23.8in
Maximum Blade Depth: 16in
O/A Track Width: 90.6in
Maximum Dig Height: 265.2in
Maximum Dump Clearance: 187.4in
Maximum Reach - Ground Level: 273.6in
Tail Swing without Counterweight: 57.1in
O/A Undercarriage Length: 113.4in
Swing Bearing - Height: 29.7in
Ground Clearance: 13.8in
Dig Depth: 161.7in
O/A Shipping Length: 259in
Note: *Boom Height when stick is pinned in transport position with no attachments.
Overall Shipping Length - with Counterweight: 264in
Note (1): **Boom Height when stick is pinned in working position with attachments. Standard Stick offers only one pin position.
Overall Shipping Length - without Counterweight: 258.8in
Note (2): ***With blade positioned at the rear of the machine.
Height - Boom Working - With Tools**: 104.7in
Height - Boom Transport - No Tools*: 95.7in

Service Refill Capacities

Fuel Tank: 39gal (US)
Hydraulic System: 29gal (US)
Hydraulic Tank: 14gal (US)
Cooling System: 2.6gal (US)
Engine Oil: 3gal (US)

Travel System

Maximum Traction Force - High Speed: 6250lb
Ground Pressure - Maximum Weight: 5.5psi
Ground Pressure - Minimum Weight: 4.9psi
Travel Speed - High: 3.2mile/h
Travel Speed - Low: 1.9mile/h
Maximum Traction Force - Low Speed: 15175lb
Gradeability - Maximum: 30 degrees

Weight Increase from Minimum Configuration

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

Certification - Cab

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

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.

Sound

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

Sustainability

Recyclability: 96%

Standard/Optional Features

Standard Equipment:

Engine
- Cat C3.3B Diesel Engine (U.S. EPA Tier 4 Final/EU Stage V) – Electronic Engine, Turbo, Diesel Particulate Filter (DPF)
- Automatic Engine Idle
- Automatic Engine Shutdown
- Automatic Swing Brake
- Automatic Two Speed Travel
- Fuel Water Separator with Indicator
- Radial Seal – Double Element Air Filter
- Extended Life Coolant, –37° C (–35° F)
Hydraulics
- Electronic Variable Displacement Piston Pump
- Load Sensing/Flow Sharing Hydraulics
- Power On Demand
- Hydraulic Temperature Monitoring
- Certified Accumulator
- HYDO Advanced Hydraulic Oil
Operator Environment
- Top Guard ISO 10262 1998 Level I
- ROPS ISO 12117-2:2008
- Stick Steer Mode
- Travel Cruise Control
- Control Pattern Changer
- Adjustable Wrist Rests
- Molded Footrests
- Removable, Washable Floor Mat
- Travel Pedals and Hand Levers
- Cat Key with Passcode Option
- HVAC with Automatic Temperature Control
- Hydraulic Lockout Controls
- Integrated Lower Front Window
- Assisted Front Window Overhead Storage
- Rear Window Emergency Exit
- Fabric, High Back, Suspension Seat
- Retractable Seat Belt (75 mm/3 in)
- Coat Hook
- Cup Holder
- LED Interior Light
- Literature Holder
- Mounting Bosses for Top and Front Guards
- 12V Power Socket
- Radio – Bluetooth, Auxiliary, Microphone, USB (charging only)
- Skylight
- Signaling/Warning Horn
- Cab and (left side) Boom Work Lights
- Utility Space for Mobile Phone
- Next Generation Color LCD Monitor (IP66)
  – Jog Dial Interface
  – Fuel Level and Coolant Temperature Gauges
  – Maintenance and Machine Monitoring
  – Performance and Machine Adjustments
  – Numeric Security Code
  – Multiple Languages
  – Camera Ready (IP68 & IP69K)
  – Hour Meter with Wake Up Switch
Undercarriage
- Greased and Lubricated Track
- Tie Down Eyes on Track Frame
- Dozer Blade
- Dozer Float
- Bolt-on, Reversible Wear Edge
Boom, Stick And Linkages
- One Piece Boom (3400 mm/133.9 in)
- Standard Stick (1820 mm/71.7 in)
- Front Shovel Capable – Pin-on/Manual Coupler/Hydraulic Coupler (not available in all regions)
- Thumb Ready (not available in all regions)
Electrical
- 12 Volt Electrical System
- 60 Ampere Alternator
- Circuit Breaker
- 900 CCA Maintenance Free Battery
- Battery Disconnect
- Ignition Key Stop Switch
Other
- Locks on External Enclosure Doors
- Lockable Fuel Cap
- Beacon Socket
- Rear Reflectors
Technology
- Product Link Basic

Optional Equipment:

Operator Environment
- Push to Start with Bluetooth^® Key
- Air Suspension Heated Seat
- Rain Visor
- Next Generation Advanced Monitor (below are all included with Next Generation Advanced Monitor option)
  – Touch Screen
  – Site Reference System
  – High Definition Camera Capable (IP68 & IP69K)
  – Numeric Security Code
Undercarriage
- Wide Dozer Blade
- Steel Tracks (450 mm/17.7 in wide)
- Wide Steel Tracks (600 mm/23.6 in)
- Steel Track with Rubber Pads
- Track Guides
Boom, Stick And Linkages
- Long Stick (2360 mm/92.9 in)
- Attachments including Buckets, Augers and Hammers
- 2nd Auxiliary Hydraulic Lines
- Boom Lowering Check Valve
- Stick Lowering Check Valve
- Certified Lifting Eye
Electrical
- Product Link^™ Elite (regulations apply)
- Travel Alarm
- Rearview Camera
- Rotating Beacon
Guarding
- Mesh Front Guard ISO 10262 1998 Level I
- Heavy Duty Front Guard ISO 10262 1998 Level II
- Overhead Cab Guard ISO 10262 1998 Level II
- Polycarbonate Front Window EN356 P5A
- Track Guards
Other
- Additional Counterweight
- Water Jacket Heater
- Refueling Pump
- Variable Angle Boom (refer to 308 CR VAB brochure for VAB specs and additional information)
Technology
- Ease of Use Indicate
- Ease of Use E-Fence
- Cat Grade Advanced 2D
- Cat Grade 3D
- Product Link Elite (regulations apply)

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Dig Depth: 161.7 in
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308 CR Mini Hydraulic Excavator