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306 CR Mini Hydraulic Excavator

Net Power

55.9 hp

Operating Weight

15,766 lb

Dig Depth

162 in

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SPECIFICATIONS

The Cat® 306 CR Mini Excavator delivers maximum power and performance in a mini size to help you work in a wide range of applications.

FULL SPECIFICATIONS

Air Conditioning System

Air Conditioning

The air conditioning system on this machine contains the fluorinated greenhouse gas refrigerant R134a (Global Warming Potential = 1287). The system contains 0.9 kg of refrigerant which has a CO2 equivalent of 1.287 metric tonnes.

Blade

Straight Blade Width

78 in

Angle Blade Width

78 in

Straight Blade Height

15.4 in

Angle Blade Height

15.7 in

Certification - Cab

Tip Over Protective Structure (TOPS)

ISO 12117:1997

Top Guard

ISO 10262:1998 (Level II)

Roll Over Protective Structure (ROPS)

ISO 12117-2:2008

Dimensions - Long Stick

Dig Depth

162 in

Cab Height

100 in

Maximum Dig Height

241 in

Tail Swing with Counterweight

58 in

Swing Bearing - Height

27 in

Boom Swing - Right

36 in

O/A Track Width

78 in

Boom In Reach

117 in

Stick Length

78 in

O/A Undercarriage Length

102 in

Boom Swing - Left

29 in

Maximum Reach - Ground Level

257 in

Maximum Blade Height

16 in

Track Belt/Shoe Width

16 in

Vertical Wall

125 in

Maximum Blade Depth

24 in

Transport Height

95 in

Ground Clearance

12 in

Width over Upper House

77 in

O/A Shipping Length

234 in

Maximum Reach

263 in

Tail Swing without Counterweight

53 in

Maximum Dump Clearance

182 in

Dimensions - Standard Stick

Vertical Wall

107 in

Tail Swing without Counterweight

53 in

Ground Clearance

12 in

Tail Swing with Counterweight

58 in

Maximum Blade Depth

24 in

Maximum Reach

248 in

Maximum Reach - Ground Level

241 in

Boom Swing - Right

36 in

Width over Upper House

77 in

O/A Undercarriage Length

102 in

Dig Depth

146 in

Track Belt/Shoe Width

16 in

Stick Length

62 in

Swing Bearing - Height

27 in

Maximum Blade Height

16 in

Boom In Reach

98 in

Transport Height

69 in

Cab Height

100 in

Maximum Dump Clearance

170 in

Boom Swing - Left

29 in

Maximum Dig Height

230 in

O/A Track Width

78 in

O/A Shipping Length

235 in

Engine

Net Power

55.9 hp

Gross Power - ISO 14396

57.9 hp

Net Power @ 2,200 rpm - U.S. EPA Tier 4 Final/EU Stage V - ISO 9249/EEC 80/1269

55.9 hp

Engine Model

Cat C2.4 Turbo

Stroke

4 in

Bore

3.4 in

Displacement

148 in³

Hydraulic System

Operating Pressure - Travel

3,553 psi

Auxiliary Circuit - Primary - Flow

24 gpm

Digging Force - Bucket

11,578 lbf

Auxiliary Circuit - Primary - Pressure

3,553 psi

Type

Load Sensing Hydraulics with Variable Displacement Piston Pump

Auxiliary Circuit - Secondary - Flow

9 gpm

Operating Pressure - Equipment

3,553 psi

Auxiliary Circuit - Secondary - Pressure

3,553 psi

Digging Force - Stick - Standard

6,632 lbf

Operating Pressure - Swing

3,263 psi

Digging Force - Stick - Long

5,957 lbf

Pump Flow at 2,400 rpm

40 gpm

Service Refill Capacities

Cooling System

2.6 gal (US)

Hydraulic System

27.5 gal (US)

Hydraulic Tank

14 gal (US)

Engine Oil

2.1 gal (US)

Fuel Tank

34.3 gal (US)

Sound

Note

European Union Directive “2000/14/EC”

Operator Sound Pressure (ISO 6396:2008)

72 dB(A)

Average Exterior Sound Pressure (ISO 6395:2008)

99 dB(A)

Sustainability

Recyclability

96%

Swing System

Boom Swing - Right

65 degrees

Boom Swing - Left

60 degrees

Machine Swing Speed

11 r/min

Travel System

Ground Pressure - Minimum Weight

5.1 psi

Ground Pressure - Maximum Weight

5.7 psi

Gradeability - Maximum

30 degrees

Maximum Traction Force - High Speed

6,969 lbf

Maximum Traction Force - Low Speed

12,589 lbf

Travel Speed - High

3.1 mile/h

Travel Speed - Low

1.7 mile/h

Weight Increase from Minimum Configuration

Counterweight

551 lb

Long Stick

97 lb

Steel Tracks with Pads

827 lb

Angle Blade

225 lb

XTC Carriage (no tool)

141 lb

Weights

Operating Weight

15,766 lb

Minimum Operating Weight with Canopy*

14,134 lb

Maximum Operating Weight with Canopy**

15,633 lb

Note (2)

**Maximum Weight is based on steel tracks with pads, extra counterweight, operator, full fuel tank, long stick, fixed blade and no bucket.

Maximum Operating Weight with Cab**

15,766 lb

Minimum Operating Weight with Cab*

14,266 lb

Note (1)

*Minimum Weight is based on rubber tracks, operator, full fuel tank, standard stick, fixed blade and no bucket.

STANDARD EQUIPMENT

OPERATOR ENVIRONMENT – CAB AND CANOPY
- 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
- Hydraulic Lockout Controls
- High Back, Suspension Seat
- Retractable Seat Belt (75 mm/3 in)
- Coat Hook
- Cup Holder
- Literature Holder
- Mounting Bosses for Top and Front Guards
- Signaling/Warning Horn
- Cab and (left side) Boom Work Lights
- Utility Space for Mobile Phone
- Next Generation Color LCD Monitor (IP66)
  – 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
OPERATOR ENVIRONMENT – CAB ONLY
- Operator Sound Pressure 72 dB(A) ISO 6396:2008
- HVAC with Automatic Temperature Control
- Integrated Lower Front Window
- Assisted Front Window Overhead Storage
- Rear Window Emergency Exit
- LED Interior Light
- 12V Power Socket
- Radio – Bluetooth®, Auxiliary, Microphone, USB (charging only)
- Skylight
- Jog dial interface
UNDERCARRIAGE
- Greased and Lubricated Track
- Hydraulic Track Adjusters
- Tie Down Eyes on Track Frame
- Dozer Straight Blade
- Dozer Float
- Bolt-on, Reversible Wear Edge
- Rubber Tracks
BOOM, STICK AND LINKAGES
- One Piece Boom (3055 mm/120.3 in)
- Standard Stick (1580 mm/62.2 in)
- Front Shovel Capable – Pin-on/Manual Coupler/Hydraulic Coupler for Cat Tools
- Thumb Ready
ELECTRICAL
- 12 Volt Electrical System
- 90 Ampere Alternator
- 650 CCA Maintenance Free Battery
- Battery Disconnect
- Circuit Breaker
- Ignition Key Stop Switch
- Signaling/Warning Horn
- Product Link™ Basic (regulations apply)
- Travel Alarm
OTHER
- Locks on External Enclosure Doors
- Lockable Fuel Cap
- Beacon Socket
- Rear Reflectors

OPTIONAL EQUIPMENT

OPERATOR ENVIRONMENT – CAB AND CANOPY
- 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
OPERATOR ENVIRONMENT – CAB ONLY
- Cab Heat Only
- Air Suspension Heated Seat
UNDERCARRIAGE
- Angle Blade
- Extra Tool Carrier (XTC)
- Steel Tracks (450 mm/17.7 in wide)
- Steel Track with Rubber Pads
BOOM, STICK AND LINKAGES
- Long Stick (190 mm/78 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)
- Camera
- Rotating Beacon
GUARDING
- Heavy Duty Front Guard ISO 10262 1998 Level II
- Mesh Front Guard ISO 10262 1998 Level I
- Overhead Cab Guard ISO 10262 1998 Level II
- Polycarbonate Front Window EN356 P5A (Cab Only)
- Track Guards
OTHER
- Additional Counterweight
- Water Jacket Heater
- Refueling Pump