US
Metric

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.

Engine

Engine Model
Cat C3.3B
Net Power
69.50 HP
51.80 kW

Weights

Operating Weight
20077.00 lb
9105.00 kg

Blade

Height
17.00 in
431.00 mm

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.

Blade

Width - Standard
90.60 in
2300.00 mm
Width - Wide
96.50 in
2450.00 mm

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 I)

Dimensions - Long Stick

Boom In Reach
126.60 in
3215.00 mm
Boom Swing - Left
23.80 in
604.00 mm
Boom Swing - Right
36.80 in
935.00 mm
Cab Height
100.00 in
2541.00 mm
Dig Depth
182.80 in
4643.00 mm
Ground Clearance
13.80 in
350.00 mm
Maximum Blade Depth
16.00 in
407.00 mm
Maximum Blade Height
14.60 in
370.00 mm
Maximum Dig Height
277.10 in
7039.00 mm
Maximum Dump Clearance
199.70 in
5072.00 mm
Maximum Reach
300.70 in
7637.00 mm
Maximum Reach - Ground Level
293.70 in
7460.00 mm
O/A Shipping Length
262.00 in
6656.00 mm
O/A Track Width
90.60 in
2300.00 mm
O/A Undercarriage Length
113.40 in
2880.00 mm
Stick Length
92.80 in
2358.00 mm
Swing Bearing - Height
29.70 in
756.00 mm
Tail Swing with Counterweight
62.40 in
1585.00 mm
Tail Swing without Counterweight
57.10 in
1450.00 mm
Track Belt/Shoe Width
17.70 in
450.00 mm
Transport Height
99.00 in
2522.00 mm
Vertical Wall
134.00 in
3404.00 mm

Dimensions - Standard Stick

Boom In Reach
120.40 in
3059.00 mm
Boom Swing - Left
23.80 in
604.00 mm
Boom Swing - Right
36.80 in
935.00 mm
Cab Height
100.00 in
2541.00 mm
Dig Depth
161.70 in
4108.00 mm
Ground Clearance
13.80 in
350.00 mm
Maximum Blade Depth
16.00 in
407.00 mm
Maximum Blade Height
14.60 in
370.00 mm
Maximum Dig Height
265.20 in
6736.00 mm
Maximum Dump Clearance
187.40 in
4760.00 mm
Maximum Reach
281.10 in
7141.00 mm
Maximum Reach - Ground Level
273.60 in
6949.00 mm
O/A Shipping Length
259.00 in
6571.00 mm
O/A Track Width
90.60 in
2300.00 mm
O/A Undercarriage Length
113.40 in
2880.00 mm
Stick Length
71.70 in
1820.00 mm
Swing Bearing - Height
29.70 in
756.00 mm
Tail Swing with Counterweight
62.40 in
1585.00 mm
Tail Swing without Counterweight
57.10 in
1450.00 mm
Track Belt/Shoe Width
17.70 in
450.00 mm
Transport Height
98.00 in
2487.00 mm
Vertical Wall
117.80 in
2991.00 mm

Engine

Bore
3.70 in
94.00 mm
Displacement
203.00 in³
3.33 l
Gross Power - ISO 14396
74.30 HP
55.40 kW
Rated Net Power - 2,200 rpm - EU Stage V - ISO 9249/EEC 80/1269
71.50 HP
53.30 kW
Rated Net Power - 2,200 rpm - U.S. EPA Tier 4 Final - ISO 9249/EEC 80/1269
70.30 HP
52.40 kW
Stroke
4.70 in
120.00 mm

Hydraulic System

Auxiliary Circuit - Primary - Flow
35.00 gal/min
131.00 l/min
Auxiliary Circuit - Primary - Pressure
4134.00 psi
285.00 bar
Auxiliary Circuit - Secondary - Flow
9.00 gal/min
33.00 l/min
Auxiliary Circuit - Secondary - Pressure
4134.00 psi
285.00 bar
Digging Force - Bucket
13946.00 lb
62.00 kN
Digging Force - Stick - Long
8032.00 lb
35.70 kN
Digging Force - Stick - Standard
9509.00 lb
42.30 kN
Operating Pressure - Equipment
4134.00 psi
285.00 bar
Operating Pressure - Swing
3626.00 psi
250.00 bar
Operating Pressure - Travel
4134.00 psi
285.00 bar
Pump Flow at 2,400 rpm
44.00 gal/min
167.00 l/min
Type
Load Sensing Hydraulics with Variable Displacement Piston Pump

Service Refill Capacities

Cooling System
2.60 gal (US)
10.00 l
Engine Oil
3.00 gal (US)
11.20 l
Fuel Tank
39.00 gal (US)
147.00 l
Hydraulic System
29.00 gal (US)
110.00 l
Hydraulic Tank
14.00 gal (US)
53.00 l

Sound

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

Swing System

Machine Swing Speed
10.60 r/min
10.60 r/min

Travel System

Gradeability - Maximum
30 degrees
Ground Pressure - Maximum Weight
5.80 psi
39.80 kPa
Ground Pressure - Minimum Weight
5.40 psi
36.90 kPa
Maximum Traction Force - High Speed
6250.00 lb
27.80 kN
Maximum Traction Force - Low Speed
15175.00 lb
67.50 kN
Travel Speed - High
3.20 mile/h
5.10 km/h
Travel Speed - Low
1.90 mile/h
3.10 km/h

Weight Increase from Minimum Configuration

Counterweight
552.00 lb
250.00 kg
Long Stick
146.00 lb
66.00 kg
Steel Tracks with Pads
752.00 lb
341.00 kg

Weights

Maximum Operating Weight with Cab**
20077.00 lb
9105.00 kg
Minimum Operating Weight with Cab*
18610.00 lb
8440.00 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, counterweight, operator, full fuel tank, long stick, blade and no bucket.

Swing System

Boom Swing - Left
60 degrees
Boom Swing - Right
50 degrees

Engine

Gross Power - SAE J1995
74.30 HP
55.40 kW
Rated Net Power - 2,200 rpm - U.S. EPA Tier 4 Final/EU Stage V - ISO 9249/EEC 80/1269
69.50 HP
51.80 kW

Hydraulic System

Note
Flow and pressure are not combinable. Under load, as flow rises pressure goes down.
Maximum Auxiliary Circuit - Primary - Pressure at Pump
4134.00 psi
285.00 bar
Maximum Auxiliary Circuit - Secondary - Pressure at Pump
4134.00 psi
285.00 bar
Maximum Auxiliary Circuit - Primary - Flow at Pump
35.00 gal/min
131.00 l/min
Maximum Auxiliary Circuit - Secondary - Flow at Pump
9.00 gal/min
33.00 l/min

Dimensions - Standard Stick

Note
*Boom Height when stick is pinned in transport position with no attachments.
Overall Shipping Length - with Counterweight
264.00 in
6706.00 mm
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
258.80 in
6574.00 mm
Note (2)
***With blade positioned at the rear of the machine.
Height - Boom Working - With Tools**
104.70 in
2660.00 mm
Height - Boom Transport - No Tools*
95.70 in
2430.00 mm

Dimensions - Long Stick

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*
89.00 in
2260.00 mm
Height - Boom Working - With Tools**
120.10 in
3050.00 mm
Overall Shipping Length - without Counterweight
6872 mm (270.6 in)***
Overall Shipping Length - with Counterweight
6872 mm (270.6 in)***
Features

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.
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
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)