308 CR

308 CR Mini Hydraulic Excavator

The 308 CR Mini Excavator delivers power and performance in an 8 ton size class to help you work in a wide range of applications.

308 CR Mini Hydraulic Excavator

DESCRIPTION

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.

See the new Cat 7-10 Ton Mini Excavators in action.

Learn about the features and benefits of the new Cat 7-10 Ton Mini Excavators.

Easy to read monitor lets you adjust machine settings to your operating preference.

Easily switch from traditional travel controls with levers and pedals to joystick controls with a push of a button.

Hear how Savage Excavation in Colorado uses their Cat 308 CR Mini Excavator to help their business succeed.

Hear how James Langton of JA Langton in the United Kingdom uses the Cat 308 CR Mini Excavator to help his business succeed.

Learn about the recommended Daily Maintenance and Inspection for the Cat 7 to 10 Ton Mini Excavators in this quick video.

Learn about the Safety Features on the Cat 7 to 10 Ton Mini Excavators in this quick video.

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.

308 CR Mini Excavator
308 CR Mini Excavator

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!

308 CR Mini Excavator
308 CR Mini Excavator

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.

308 CR Mini Excavator
308 CR Mini Excavator

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.

308 CR Mini Excavator

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.
  • Auto Idle helps reduce unnecessary fuel burn and greenhouse gas emissions by allowing the engine to automatically go into idle mode when the machine is not working.
  • Engine Idle Shutdown Timer reduces fuel burn, greenhouse gas emissions and unnecessary idle time by shutting down the machine after a pre-set idling period.
  • Cruise control helps you maintain a constant speed as you travel across your jobsite saving fuel and reducing greenhouse gas emissions.
  • The Cat® Seat Belt Reminder provides audible and visual warnings to remind operators to buckle up during machine operation. The easy-to-install system is compatible with all equipment brands to help ensure operator safety.
  • Extended maintenance intervals not only reduce downtime but decrease the amount of fluid and filters that are replaced over the life of the machine.
  • Remote Flash minimizes downtime and maintenance time while keeping your asset running with maximum efficiency. Alerts for machine updates are sent virtually from your Cat dealer and updates can be deployed without a dealer technician needing to be onsite.(if equipped)
  • Remote Troubleshoot decreases maintenance time and keeps your machine running with maximum efficiency by allowing your Cat dealer to virtually test the machine while working. Once a problem is identified, a technician can fix it the first time, saving time and money.(if equipped)
  • Cat Grade with advanced 2D and 3D technologies combine advanced guidance with optional automated machine control helping you reach grading targets while reducing fuel burn and greenhouse gas emissions by improving efficiency, job site productivity, and accuracy. (if equipped).
*Engines with no aftertreatment devices can use higher blends, up to 100% biodiesel. (for use of blends higher than 20% biodiesel, consult your Cat dealer)

308 CR Mini Excavator

CHOICES

  • Configure the machine to meet your specific application needs with a dozer straight blade or angle blade.

  • Standard Equipment
  • Optional Equipment
  • Specs
  • Docs

Standard Equipment

  • ENGINE
    • Cat C2.8 Turbo Diesel Engine (U.S. EPA Tier 4 Final/EU Stage V) - Electronic Engine, Turbo, Fit-For-Life Diesel Particulate Filter (DPF) and Diesel Oxidation Catalyst (DOC) Aftertreatment System
    • Cat C2.8 Turbo Diesel Engine (U.S. EPA Tier 4 Final/EU Stage V) - Electronic Engine, Turbo, Fit-For-Life Diesel Particulate Filter (DPF) and Diesel Oxidation Catalyst (DOC) Aftertreatment System
    • Automatic Engine Idle
    • Automatic Engine Idle
    • Automatic Engine Shutdown
    • Automatic Engine Shutdown
    • Automatic Swing Brake
    • Automatic Swing Brake
    • Automatic Two Speed Travel
    • Automatic Two Speed Travel
    • Fuel Water Separator with Indicator
    • Fuel Water Separator with Indicator
    • Radial Seal – Double Element Air Filter
    • Radial Seal – Double Element Air Filter
    • Extended Life Coolant, –37° C (–35° F)
    • Extended Life Coolant, –37° C (–35° F)
  • HYDRAULICS
    • Electronic Variable Displacement Piston Pump
    • Load Sensing/Flow Sharing Hydraulics
    • Electronic Variable Displacement Piston Pump
    • Power On Demand
    • Load Sensing/Flow Sharing Hydraulics
    • Hydraulic Temperature Monitoring
    • Power On Demand
    • Certified Accumulator
    • Hydraulic Temperature Monitoring
    • HYDO Advanced Hydraulic Oil
    • Certified Accumulator
    • HYDO Advanced Hydraulic Oil
  • OPERATOR ENVIRONMENT
    • Stick Steer Mode
    • Travel Cruise Control
    • Top Guard ISO 10262 1998 Level I
    • Control Pattern Changer
    • ROPS ISO 12117-2:2008
    • Adjustable Wrist Rests
    • Stick Steer Mode
    • Molded Footrests
    • Travel Cruise Control
    • Removable, Washable Floor Mat
    • Control Pattern Changer
    • Travel Pedals and Hand Levers
    • Adjustable Wrist Rests
    • Cat Key with Passcode Option
    • Molded Footrests
    • HVAC with Automatic Temperature Control
    • Removable, Washable Floor Mat
    • Hydraulic Lockout Controls
    • Travel Pedals and Hand Levers
    • Integrated Lower Front Window
    • Cat Key with Passcode Option
    • Assisted Front Window Overhead Storage
    • HVAC with Automatic Temperature Control
    • Rear Window Emergency Exit
    • Hydraulic Lockout Controls
    • Fabric, High Back, Suspension Seat
    • Integrated Lower Front Window
    • Retractable Seat Belt (75 mm/3 in)
    • Assisted Front Window Overhead Storage
    • Coat Hook
    • Rear Window Emergency Exit
    • Cup Holder
    • Fabric, High Back, Suspension Seat
    • LED Interior Light
    • Retractable Seat Belt (75 mm/3 in)
    • Literature Holder
    • Coat Hook
    • Mounting Bosses for Top and Front Guards
    • Cup Holder
    • 12V Power Socket
    • LED Interior Light
    • Radio – Bluetooth, Auxiliary, Microphone, USB (charging only)
    • Literature Holder
    • Skylight
    • Mounting Bosses for Top and Front Guards
    • Signaling/Warning Horn
    • 12V Power Socket
    • Cab and (left side) Boom Work Lights
    • Radio – Bluetooth, Auxiliary, Microphone, USB (charging only)
    • Utility Space for Mobile Phone
    • Skylight
    • 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
    • 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
  • TECHNOLOGY
    • Product Link™ Elite (regulations apply)
  • UNDERCARRIAGE
    • Greased and Lubricated Track
    • Tie Down Eyes on Track Frame
    • Dozer Blade
    • Dozer Float
    • Greased and Lubricated Track
    • Bolt-on, Reversible Wear Edge
    • 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)
    • 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)
  • GUARDING
    • ROPS ISO 12117-2:2008
    • Top Guard ISO 10262 1998 (Level I)
  • ELECTRICAL
    • 12 Volt Electrical System
    • 60 Ampere Alternator
    • Circuit Breaker
    • 900 CCA Maintenance Free Battery
    • Lock Out/Tag Out Battery Disconnect
    • Ignition Key Stop Switch
    • 12 Volt Electrical System
    • Rear Camera
    • 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
    • Locks on External Enclosure Doors
    • Lockable Fuel Cap
    • Beacon Socket
    • Rear Reflectors

Optional Equipment

  • OPERATOR ENVIRONMENT
    • Push to Start with Bluetooth® Key
    • Push to Start with Bluetooth® Key
    • Air Suspension Heated Seat
    • Air Suspension Heated Seat
    • Rain Visor
    • Seat Belt Reminder System
    • 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
    • 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
    • Wide Dozer Blade
    • Dozer Angle Blade
    • Steel Tracks (450 mm/17.7 in wide)
    • Wide Steel Tracks (600 mm/23.6 in)
    • Steel Track with Rubber Pads
    • Track Guides
    • Dozer Angle Blade
  • 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
    • Long Stick (2360 mm/92.9 in)
    • Attachments including Buckets, Augers and Hammers
    • 2nd Auxiliary Hydraulic Lines
    • Boom Lowering Check Valve (Standard in Europe)
    • Stick Lowering Check Valve (Standard in Europe)
    • Certified Lifting Eye
  • ELECTRICAL
    • Product Link™ Elite (regulations apply)
    • Travel Alarm
    • Rearview Camera
    • Rotating Beacon
    • 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
    • Top Guard 10262 1998 (Level II)
    • Polycarbonate Front Window EN356 P5A
    • Front Guard (Mesh) ISO 10262 1998 (Level I)
    • Track Guards
    • Front Guard (Heavy Duty) ISO 10262 1998 (Level II)
    • Track Guards
  • OTHER
    • Additional Counterweight
    • Counterweight (250 kg/551 lb)
    • Water Jacket Heater
    • Counterweight (500 kg/1103 lb)
    • Refueling Pump
    • Water Jacket Heater
    • Variable Angle Boom (refer to 308 CR VAB brochure for VAB specs and additional information)
    • 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
    • Ease of Use Laser Catcher
    • Cat Grade Advanced 2D
    • Cat Grade 3D
    • Ease of Use Indicate
    • Ease of Use E-Fence
    • Cat Grade Advanced 2D
    • Cat Grade 3D
    • Product Link Elite (regulations apply)
  • HYDRAULICS
    • Third Auxiliary
    • Third Auxiliary

Specs

Overview

Long Name:
308 CR Mini Hydraulic Excavator
Name:
308 CR
Brand:
Cat
Status:
Current

Engine

Net Power
69 hp / 51.2 kW
Engine Model
Cat® C2.8 Turbo
Net Power - 2,400 rpm - ISO 9249, 80/1269/EEC
69 hp / 51.2 kW
Gross Power - ISO 14396
74.3 hp / 55.4 kW
Bore
3.5 in / 90 mm
Stroke
4.3 in / 110 mm
Displacement
171 in³ / 2.8 l
Note
Meets U.S. EPA Tier 4 Final and EU Stage V emissions standards.
Note (1)
Advertised power is tested per the specified standard in effect at the time of manufacture.
Note (2)
Net power advertised is the power available at the flywheel when the engine is at the rated speed of 2,400 rpm and the engine is installed with the factory configured fan, air intake system, exhaust system and alternator with a minimum alternator load.

Weights

Operating Weight
20771 lb / 9420 kg
Minimum Operating Weight with Cab*
18754 lb / 8505 kg
Maximum Operating Weight with Cab**
20771 lb / 9420 kg
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, (500 kg/1,103 lb) counterweight, operator, full fuel tank, long stick, blade and no bucket.

Weight Increase from Minimum Configuration

Counterweight
551 lb / 250 kg
Counterweight (extra)
1103 lb / 500 kg
Long Stick
146 lb / 66 kg
Steel Tracks with Pads
752 lb / 341 kg
Angle Blade
490 lb / 222 kg

Travel System

Travel Speed - High
3.2 mile/h / 5.1 km/h
Travel Speed - Low
1.9 mile/h / 3.1 km/h
Maximum Traction Force - High Speed
6250 lb / 27.8 kN
Maximum Traction Force - Low Speed
15175 lb / 67.5 kN
Ground Pressure - Minimum Weight
5.4 psi / 37.2 kPa
Ground Pressure - Maximum Weight
6 psi / 41.2 kPa
Gradeability - Maximum
30 degrees

Service Refill Capacities

Cooling System
2.6 gal (US) / 10 l
Engine Oil
2.3 gal (US) / 8.8 l
Fuel Tank
39 gal (US) / 147 l
Hydraulic Tank
14 gal (US) / 53 l
Hydraulic System
29 gal (US) / 110 l

Hydraulic System

Type
Load Sensing Hydraulics with Variable Displacement Piston Pump
Pump Flow at 2,400 rpm
44 gpm / 167 L/min
Operating Pressure - Equipment
4134 psi / 285 bar
Operating Pressure - Travel
4134 psi / 285 bar
Operating Pressure - Swing
3626 psi / 250 bar
Maximum Auxiliary Circuit - Primary - Flow at Pump
35 gpm / 131 L/min
Maximum Auxiliary Circuit - Primary - Pressure at Pump
4134 psi / 285 bar
Maximum Auxiliary Circuit - Secondary - Flow at Pump
9 gpm / 33 L/min
Maximum Auxiliary Circuit - Secondary - Pressure at Pump
4134 psi / 285 bar
Digging Force - Stick - Standard
9509 lb / 42.3 kN
Digging Force - Stick - Long
8032 lb / 35.7 kN
Digging Force - Bucket
13946 lb / 62 kN
Note
Flow and pressure are not combinable. Under load, as flow rises pressure goes down.

Swing System

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

Blade

Width - Standard
90.6 in / 2300 mm
Width - Wide
96.5 in / 2450 mm
Height
17 in / 431 mm
Angle Blade Width
90.6 in / 2300 mm
Angle Blade Height
17.5 in / 441 mm
Angle Blade - Left
25 degrees
Angle Blade - Right
25 degrees

Certification - Cab

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

Dimensions - Standard Stick

Dig Depth
161.7 in / 4108 mm
Vertical Wall
117.8 in / 2991 mm
Maximum Reach - Ground Level
273.6 in / 6949 mm
Maximum Reach
281.1 in / 7141 mm
Maximum Dig Height
265.2 in / 6736 mm
Maximum Dump Clearance
187.4 in / 4760 mm
Boom In Reach
120.4 in / 3059 mm
Tail Swing with Counterweight
62.4 in / 1585 mm
Tail Swing without Counterweight
57.1 in / 1450 mm
Maximum Blade Height
14.6 in / 370 mm
Maximum Blade Depth
16 in / 407 mm
Height - Boom Transport - No Tools*
95.7 in / 2430 mm
Height - Boom Working - With Tools**
104.7 in / 2660 mm
Cab Height
100 in / 2541 mm
Swing Bearing - Height
29.7 in / 756 mm
O/A Undercarriage Length
113.4 in / 2880 mm
Overall Shipping Length - with Counterweight
264 in / 6706 mm
Overall Shipping Length - without Counterweight
258.8 in / 6574 mm
Boom Swing - Right
36.8 in / 935 mm
Boom Swing - Left
23.8 in / 604 mm
Track Belt/Shoe Width
17.7 in / 450 mm
O/A Track Width
90.6 in / 2300 mm
Ground Clearance
13.8 in / 350 mm
Stick Length
71.7 in / 1820 mm
Note
*Boom Height when stick is pinned in transport position with no attachments.
Note (1)
**Boom Height when stick is pinned in working position with attachments. Standard Stick offers only one pin position.
Note (2)
***With blade positioned at the rear of the machine.

Dimensions - Long Stick

Dig Depth
182.8 in / 4643 mm
Vertical Wall
134 in / 3404 mm
Maximum Reach - Ground Level
293.7 in / 7460 mm
Maximum Reach
300.7 in / 7637 mm
Maximum Dig Height
277.1 in / 7039 mm
Maximum Dump Clearance
199.7 in / 5072 mm
Boom In Reach
126.6 in / 3215 mm
Tail Swing with Counterweight
62.4 in / 1585 mm
Tail Swing without Counterweight
57.1 in / 1450 mm
Maximum Blade Height
14.6 in / 370 mm
Maximum Blade Depth
16 in / 407 mm
Height - Boom Transport - No Tools*
89 in / 2260 mm
Height - Boom Working - With Tools**
120.1 in / 3050 mm
Cab Height
100 in / 2541 mm
Swing Bearing - Height
29.7 in / 756 mm
O/A Undercarriage Length
113.4 in / 2880 mm
Overall Shipping Length - with Counterweight
6872 mm (270.6 in)***
Overall Shipping Length - without Counterweight
6872 mm (270.6 in)***
Boom Swing - Right
36.8 in / 935 mm
Boom Swing - Left
23.8 in / 604 mm
Track Belt/Shoe Width
17.7 in / 450 mm
O/A Track Width
90.6 in / 2300 mm
Ground Clearance
13.8 in / 350 mm
Stick Length
92.8 in / 2358 mm
Note
*Boom Height when stick is pinned in transport position with no attachments.
Note (1)
**Boom Height when stick is pinned in working position with attachments. Standard Stick offers only one pin position.
Note (2)
***With blade positioned at the rear of the machine.

Air Conditioning System

Air Conditioning
The air conditioning system on this machine contains the fluorinated greenhouse gas refrigerant R134a or R1234yf (Europe) (Global Warming Potential = 1430). See label or instruction manual for gas refrigerant identification. The system contains 0.75 kg (1.65 lb), 0.90 kg (1.98 lb) or 1.0 kg (2.20 lb) of refrigerant which has a CO2 equivalent of 1.430 metric tonnes (1.576 tons) for R134a and 0.001 tonnes (0.001 tons) for R1234yf (Europe).

Sound

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

Sustainability

Recyclability
96%

SEE HOW 308 CR COMPARES AGAINST FREQUENTLY COMPARED PRODUCTS.

Mini Excavators
308 CR
308 CR Mini Hydraulic Excavator
Brand
Cat
Status
Current
Net Power
69 hp / 51.2 kW
Engine Model
Cat® C2.8 Turbo
Bore
3.5 in / 90 mm
Stroke
4.3 in / 110 mm
Displacement
171 in³ / 2.8 l
Note
European Union Directive "2000/14/EC"
Note (1)
**Boom Height when stick is pinned in working position with attachments. Standard Stick offers only one pin position.
Note (2)
***With blade positioned at the rear of the machine.
Operating Weight
20771 lb / 9420 kg
Minimum Operating Weight with Cab*
18754 lb / 8505 kg
Maximum Operating Weight with Cab**
20771 lb / 9420 kg
Counterweight
551 lb / 250 kg
Long Stick
146 lb / 66 kg
Steel Tracks with Pads
752 lb / 341 kg
Travel Speed - High
3.2 mile/h / 5.1 km/h
Travel Speed - Low
1.9 mile/h / 3.1 km/h
Maximum Traction Force - High Speed
6250 lb / 27.8 kN
Maximum Traction Force - Low Speed
15175 lb / 67.5 kN
Ground Pressure - Minimum Weight
5.4 psi / 37.2 kPa
Ground Pressure - Maximum Weight
6 psi / 41.2 kPa
Gradeability - Maximum
30 degrees
Cooling System
2.6 gal (US) / 10 l
Engine Oil
2.3 gal (US) / 8.8 l
Fuel Tank
39 gal (US) / 147 l
Hydraulic Tank
14 gal (US) / 53 l
Hydraulic System
29 gal (US) / 110 l
Type
Load Sensing Hydraulics with Variable Displacement Piston Pump
Pump Flow at 2,400 rpm
44 gpm / 167 L/min
Operating Pressure - Equipment
4134 psi / 285 bar
Operating Pressure - Travel
4134 psi / 285 bar
Operating Pressure - Swing
3626 psi / 250 bar
Maximum Auxiliary Circuit - Primary - Flow at Pump
35 gpm / 131 L/min
Maximum Auxiliary Circuit - Primary - Pressure at Pump
4134 psi / 285 bar
Maximum Auxiliary Circuit - Secondary - Flow at Pump
9 gpm / 33 L/min
Maximum Auxiliary Circuit - Secondary - Pressure at Pump
4134 psi / 285 bar
Digging Force - Stick - Standard
9509 lb / 42.3 kN
Digging Force - Stick - Long
8032 lb / 35.7 kN
Digging Force - Bucket
13946 lb / 62 kN
Machine Swing Speed
10.6 r/min / 10.6 r/min
Height
17 in / 431 mm
Roll Over Protective Structure (ROPS)
ISO 12117-2:2008
Top Guard
ISO 10262:1998 (Level I)
Dig Depth
182.8 in / 4643 mm
Vertical Wall
134 in / 3404 mm
Maximum Reach - Ground Level
293.7 in / 7460 mm
Maximum Reach
300.7 in / 7637 mm
Maximum Dig Height
277.1 in / 7039 mm
Maximum Dump Clearance
199.7 in / 5072 mm
Boom In Reach
126.6 in / 3215 mm
Tail Swing with Counterweight
62.4 in / 1585 mm
Tail Swing without Counterweight
57.1 in / 1450 mm
Maximum Blade Height
14.6 in / 370 mm
Maximum Blade Depth
16 in / 407 mm
Cab Height
100 in / 2541 mm
Swing Bearing - Height
29.7 in / 756 mm
O/A Undercarriage Length
113.4 in / 2880 mm
Overall Shipping Length - with Counterweight
6872 mm (270.6 in)***
Overall Shipping Length - without Counterweight
6872 mm (270.6 in)***
Track Belt/Shoe Width
17.7 in / 450 mm
O/A Track Width
90.6 in / 2300 mm
Ground Clearance
13.8 in / 350 mm
Stick Length
92.8 in / 2358 mm
Air Conditioning
The air conditioning system on this machine contains the fluorinated greenhouse gas refrigerant R134a or R1234yf (Europe) (Global Warming Potential = 1430). See label or instruction manual for gas refrigerant identification. The system contains 0.75 kg (1.65 lb), 0.90 kg (1.98 lb) or 1.0 kg (2.20 lb) of refrigerant which has a CO2 equivalent of 1.430 metric tonnes (1.576 tons) for R134a and 0.001 tonnes (0.001 tons) for R1234yf (Europe).
Operator Sound Pressure (ISO 6396:2008)
72 dB(A) / 72 dB(A)
Average Exterior Sound Pressure (ISO 6395:2008)
99 dB(A) / 99 dB(A)
Recyclability
96%
Selected Model
Mini Excavators
307.5 – Tier 4 / Stage V
307.5 Mini Hydraulic Excavator
Brand
Caterpillar
Status
Current
Net Power
54.8 hp / 40.9 kW
Engine Model
Cat C2.4 Turbo
Bore
3.4 in / 87 mm
Stroke
4 in / 102.4 mm
Displacement
148 in³ / 2.43 l
Note
European Union Directive “2000/14/EC”
Note (1)
Boom Height when stick is pinned in transport position with no attachments.
Note (2)
Boom Height when stick is pinned in working position with attachments.
Operating Weight
17905 lb / 8120 kg
Minimum Operating Weight with Cab*
16549 lb / 7505 kg
Maximum Operating Weight with Cab**
17905 lb / 8120 kg
Counterweight
552 lb / 250 kg
Long Stick
181 lb / 82 kg
Steel Tracks with Pads
628 lb / 285 kg
Travel Speed - High
3.1 mile/h / 5 km/h
Travel Speed - Low
1.9 mile/h / 3.1 km/h
Maximum Traction Force - High Speed
5856 lb / 26.1 kN
Maximum Traction Force - Low Speed
14035 lb / 62.4 kN
Ground Pressure - Minimum Weight
5.1 psi / 34.8 kPa
Ground Pressure - Maximum Weight
5.5 psi / 37.7 kPa
Gradeability - Maximum
30 degrees
Cooling System
2.6 gal (US) / 10 l
Engine Oil
2.5 gal (US) / 9.5 l
Fuel Tank
38 gal (US) / 145 l
Hydraulic Tank
14 gal (US) / 53 l
Hydraulic System
29 gal (US) / 110 l
Type
Load Sensing Hydraulics with Variable Displacement Piston Pump
Pump Flow at 2,400 rpm
44 gpm / 167 L/min
Operating Pressure - Equipment
4134 psi / 285 bar
Operating Pressure - Travel
4134 psi / 285 bar
Operating Pressure - Swing
3626 psi / 250 bar
Maximum Auxiliary Circuit - Primary - Flow at Pump
35 gpm / 131 L/min
Maximum Auxiliary Circuit - Primary - Pressure at Pump
4134 psi / 285 bar
Maximum Auxiliary Circuit - Secondary - Flow at Pump
9 gpm / 33 L/min
Maximum Auxiliary Circuit - Secondary - Pressure at Pump
4134 psi / 285 bar
Digging Force - Stick - Standard
8504 lb / 37.8 kN
Digging Force - Stick - Long
7579 lb / 33.7 kN
Digging Force - Bucket
12272 lb / 54.6 kN
Machine Swing Speed
10 r/min / 10 r/min
Height
17 in / 431 mm
Roll Over Protective Structure (ROPS)
ISO 12117-2:2008
Top Guard
ISO 10262:1998 (Level I)
Dig Depth
161.4 in / 4100 mm
Vertical Wall
161.9 in / 4113 mm
Maximum Reach - Ground Level
262.6 in / 6670 mm
Maximum Reach
267.9 in / 6805 mm
Maximum Dig Height
305.7 in / 7765 mm
Maximum Dump Clearance
225.1 in / 5717 mm
Boom In Reach
88.6 in / 2250 mm
Tail Swing with Counterweight
76 in / 1930 mm
Tail Swing without Counterweight
70.9 in / 1800 mm
Maximum Blade Height
14.6 in / 370 mm
Maximum Blade Depth
16 in / 407 mm
Cab Height
100 in / 2541 mm
Swing Bearing - Height
29.7 in / 756 mm
O/A Undercarriage Length
108.7 in / 2760 mm
Overall Shipping Length - with Counterweight
246.1 in / 6250 mm
Overall Shipping Length - without Counterweight
240.9 in / 6120 mm
Track Belt/Shoe Width
17.7 in / 450 mm
O/A Track Width
86.6 in / 2200 mm
Ground Clearance
14.6 in / 370 mm
Stick Length
86.9 in / 2208 mm
Air Conditioning
The air conditioning system on this machine contains the fluorinated greenhouse gas refrigerant R134a (Global Warming Potential = 1430). The system contains .90 kg of refrigerant which has a CO2 equivalent of 1.287 metric tonnes.
Operator Sound Pressure (ISO 6396:2008)
72 dB(A) / 72 dB(A)
Average Exterior Sound Pressure (ISO 6395:2008)
98 dB(A) / 98 dB(A)
Recyclability
96%
More Details
Mini Excavators
308 CR
308 CR Mini Hydraulic Excavator
Brand
Caterpillar
Status
Current
Net Power
69.5 hp / 51.8 kW
Engine Model
Cat C3.3B
Bore
3.7 in / 94 mm
Stroke
4.7 in / 120 mm
Displacement
203 in³ / 3.33 l
Note
*Boom Height when stick is pinned in transport position with no attachments.
Note (1)
**Boom Height when stick is pinned in working position with attachments. Standard Stick offers only one pin position.
Note (2)
***With blade positioned at the rear of the machine.
Operating Weight
18493 lb / 8387 kg
Minimum Operating Weight with Cab*
16542 lb / 7502 kg
Maximum Operating Weight with Cab**
18493 lb / 8387 kg
Counterweight
552 lb / 250 kg
Long Stick
146 lb / 66 kg
Steel Tracks with Pads
752 lb / 341 kg
Travel Speed - High
3.2 mile/h / 5.1 km/h
Travel Speed - Low
1.9 mile/h / 3.1 km/h
Maximum Traction Force - High Speed
6250 lb / 27.8 kN
Maximum Traction Force - Low Speed
15175 lb / 67.5 kN
Ground Pressure - Minimum Weight
4.9 psi / 33.8 kPa
Ground Pressure - Maximum Weight
5.5 psi / 37.6 kPa
Gradeability - Maximum
30 degrees
Cooling System
2.6 gal (US) / 10 l
Engine Oil
3 gal (US) / 11.2 l
Fuel Tank
39 gal (US) / 147 l
Hydraulic Tank
14 gal (US) / 53 l
Hydraulic System
29 gal (US) / 110 l
Type
Load Sensing Hydraulics with Variable Displacement Piston Pump
Pump Flow at 2,400 rpm
44 gpm / 167 L/min
Operating Pressure - Equipment
4134 psi / 285 bar
Operating Pressure - Travel
4134 psi / 285 bar
Operating Pressure - Swing
3626 psi / 250 bar
Maximum Auxiliary Circuit - Primary - Flow at Pump
35 gpm / 131 L/min
Maximum Auxiliary Circuit - Primary - Pressure at Pump
4134 psi / 285 bar
Maximum Auxiliary Circuit - Secondary - Flow at Pump
9 gpm / 33 L/min
Maximum Auxiliary Circuit - Secondary - Pressure at Pump
4134 psi / 285 bar
Digging Force - Stick - Standard
9509 lb / 42.3 kN
Digging Force - Stick - Long
8032 lb / 35.7 kN
Digging Force - Bucket
13946 lb / 62 kN
Machine Swing Speed
10.6 r/min / 10.6 r/min
Height
17 in / 431 mm
Roll Over Protective Structure (ROPS)
ISO 12117-2:2008
Top Guard
ISO 10262:1998 (Level I)
Dig Depth
182.8 in / 4643 mm
Vertical Wall
134 in / 3404 mm
Maximum Reach - Ground Level
293.7 in / 7460 mm
Maximum Reach
300.7 in / 7637 mm
Maximum Dig Height
277.1 in / 7039 mm
Maximum Dump Clearance
199.7 in / 5072 mm
Boom In Reach
126.6 in / 3215 mm
Tail Swing with Counterweight
62.4 in / 1585 mm
Tail Swing without Counterweight
57.1 in / 1450 mm
Maximum Blade Height
14.6 in / 370 mm
Maximum Blade Depth
16 in / 407 mm
Cab Height
100 in / 2541 mm
Swing Bearing - Height
29.7 in / 756 mm
O/A Undercarriage Length
113.4 in / 2880 mm
Overall Shipping Length - with Counterweight
6872 mm (270.6 in)***
Overall Shipping Length - without Counterweight
6872 mm (270.6 in)***
Track Belt/Shoe Width
17.7 in / 450 mm
O/A Track Width
90.6 in / 2300 mm
Ground Clearance
13.8 in / 350 mm
Stick Length
92.8 in / 2358 mm
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.
Operator Sound Pressure (ISO 6396:2008)
72 dB(A) / 72 dB(A)
Average Exterior Sound Pressure (ISO 6395:2008)
99 dB(A) / 99 dB(A)
Recyclability
96%
More Details