308 CR Mini Hydraulic Excavator

308 CR Mini Hydraulic Excavator

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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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Engine

Net Power
70.3HP
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

Weights

Operating Weight
20678lb
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**
20077lb
Minimum Operating Weight with Cab*
18610lb

Dimensions - Long Stick

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

Blade

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

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

Dimensions - Standard Stick

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

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
5.8psi
Ground Pressure - Minimum Weight
5.4psi
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 II)
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)

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.

Standard Equipment:

Optional Equipment:

    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