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

Weights

Operating Weight
20077lb
Maximum Operating Weight with Cab**
20077lb
Minimum Operating Weight with Cab*
18610lb
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.

Dimensions - Long Stick

Dig Depth
182.8in
Boom In Reach
126.6in
Boom Swing - Left
23.8in
Boom Swing - Right
36.8in
Cab Height
100in
Ground Clearance
13.8in
Maximum Blade Depth
16in
Maximum Blade Height
14.6in
Maximum Dig Height
277.1in
Maximum Dump Clearance
199.7in
Maximum Reach
300.7in
Maximum Reach - Ground Level
293.7in
O/A Track Width
90.6in
O/A Undercarriage Length
113.4in
Stick Length
92.8in
Swing Bearing - Height
29.7in
Tail Swing with Counterweight
62.4in
Tail Swing without Counterweight
57.1in
Track Belt/Shoe Width
17.7in
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

Hydraulic System

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

Swing System

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

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.

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 - Standard Stick

Boom In Reach
120.4in
Boom Swing - Left
23.8in
Boom Swing - Right
36.8in
Cab Height
100in
Dig Depth
161.7in
Ground Clearance
13.8in
Maximum Blade Depth
16in
Maximum Blade Height
14.6in
Maximum Dig Height
265.2in
Maximum Dump Clearance
187.4in
Maximum Reach
281.1in
Maximum Reach - Ground Level
273.6in
O/A Track Width
90.6in
O/A Undercarriage Length
113.4in
Stick Length
71.7in
Swing Bearing - Height
29.7in
Tail Swing with Counterweight
62.4in
Tail Swing without Counterweight
57.1in
Track Belt/Shoe Width
17.7in
Vertical Wall
117.8in
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

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

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)

Travel System

Gradeability - Maximum
30 degrees
Ground Pressure - Maximum Weight
5.8psi
Ground Pressure - Minimum Weight
5.4psi
Maximum Traction Force - High Speed
6250lb
Maximum Traction Force - Low Speed
15175lb
Travel Speed - High
3.2mile/h
Travel Speed - Low
1.9mile/h

Weight Increase from Minimum Configuration

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

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:

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)