306 CR Mini Hydraulic Excavator

306 CR Mini Hydraulic Excavator

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.

Net Power
55.9 HP
Engine Model
Cat C2.4 Turbo
Gross Power - ISO 14396
57.9 HP
Displacement
148 in³

Engine

Net Power
55.9HP
Engine Model
Cat C2.4 Turbo
Gross Power - ISO 14396
57.9HP
Displacement
148in³
Bore
3.4in
Stroke
4in

Dimensions - Long Stick

Tail Swing without Counterweight
53in
Dig Depth
162in
Maximum Blade Height
16in
O/A Track Width
78in
Track Belt/Shoe Width
16in
Vertical Wall
125in
Boom In Reach
117in
Maximum Blade Depth
24in
Maximum Dig Height
241in
Swing Bearing - Height
26in
O/A Undercarriage Length
102in
O/A Shipping Length
234in
Maximum Reach
263in
Boom Swing - Left
29in
Boom Swing - Right
36in
Maximum Dump Clearance
181in
Maximum Reach - Ground Level
257in

Weights

Operating Weight
15821lb
Note (2)
**Maximum Weight is based on steel tracks, extra counterweight, operator, full fuel tank, long stick, blade and bucket.
Note (1)
*Minimum Weight is based on rubber tracks, operator, full fuel tank, standard stick, blade and bucket.

Travel System

Gradeability - Maximum
30 degrees
Maximum Traction Force - High Speed
6969lbf
Maximum Traction Force - Low Speed
12589lbf
Travel Speed - High
3.1mile/h
Travel Speed - Low
1.7mile/h

Service Refill Capacities

Cooling System
2.6gal (US)
Hydraulic System
19.8gal (US)
Hydraulic Tank
10.3gal (US)
Engine Oil
2.1gal (US)
Fuel Tank
34.3gal (US)

Hydraulic System

Operating Pressure - Travel
3553psi
Digging Force - Bucket
11578lbf
Type
Load Sensing Hydraulics with Variable Displacement Piston Pump
Operating Pressure - Equipment
3553psi
Digging Force - Stick - Standard
6632lbf
Operating Pressure - Swing
3046psi
Digging Force - Stick - Long
5957lbf
Pump Flow at 2,400 rpm
46gal/min

Swing System

Machine Swing Speed
11r/min

Sound

Note
European Union Directive “2000/14/EC”

Dimensions - Standard Stick

Track Belt/Shoe Width
16in
Maximum Reach
248in
Vertical Wall
107in
Swing Bearing - Height
26in
Maximum Reach - Ground Level
241in
Maximum Blade Height
16in
Boom In Reach
98in
Boom Swing - Right
36in
Cab Height
100in
Maximum Dump Clearance
170in
Boom Swing - Left
29in
O/A Undercarriage Length
102in
Maximum Dig Height
230in
Maximum Blade Depth
24in
O/A Track Width
78in
Dig Depth
146in
O/A Shipping Length
235in

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.

Standard Equipment:

  • Engine
    • Cat C2.4T 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
    • Side by Side Engine and Hydraulic Oil Cooler
    • Extended Life Coolant, –37° C (–35° F)
    • Ecology Drain
  • Hydraulics
    • Smart Tech Electronic Pump
    • Variable Displacement Piston Pump
    • Load Sensing/Flow Sharing Hydraulics
    • Power On Demand
    • Hydraulic Temperature Monitoring
    • Certified Accumulator
    • Hydro Advanced Hydraulic Oil
    • Auxiliary Hydraulic Lines:
      – 1 and 2-way (combined function)
    • Auxiliary Line Quick Disconnects
    • Adjustable Auxiliary Flow
    • Continuous Flow
    • Adjustable Auxiliary Relief
  • Operator Environment
    • Canopy or Sealed and Pressurized Cab
    • Operator Sound Pressure 72 dB(A) ISO 6396:2008
    • 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
    • ROPS – ISO 12117-2:2008
    • TOPS – ISO 12117:1997
    • Signaling/Warning Horn
    • Cab and (left side) Boom Work Lights
    • Utility Space for Mobile Phone
    • Color LCD Monitor
      – Fuel Level and Coolant Temperature Gauges
      – Maintenance and Machine Monitoring
      – Performance and Machine Adjustments
      – Numeric Security Code
      – Multiple Languages
      – Camera Ready
      – Hour Meter with Wake Up Switch
      – Jog Dial Control Interface
    • Cab Machines Only
      – 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®, USB, Auxiliary, Microphone
      – Skylight
  • 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)
    • Long Stick (1980 mm/78.0 in)
    • Front Shovel Capable (Pin-On/Manual Coupler/Hydraulic Coupler – not available in all regions)
    • Thumb Ready (not available in all regions)
    • Certified Lifting Eye (not available in all regions)
  • 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, not available in all regions)
    • Travel Alarm
  • Other
    • Locks on External Enclosure Doors
    • Lockable Fuel Cap
    • Beacon Socket
    • Rear Reflectors

Optional Equipment:

  • Operator Environment
    • Cab (see Standard Equipment)
    • Next Generation Advanced Monitor
      – Touch Screen
      – Site Reference System
      – High Definition Camera Capable
    • Rain Visor
    • Air Suspension Heated Seat with Cab
    • Top Guard – ISO 10262:1998 (Level II)
  • Electrical
    • Product Link Elite (regulations apply, not available in all regions)
    • Rearview Camera
    • Rotating Beacon
  • Other
    • Attachments including Buckets, Augers and Hammers
    • Angle Blade
    • Extra Tool Carrier (XTC)
    • Steel Tracks (450 mm/17.7 in wide)
    • Steel Track with Rubber Pads
    • 2nd Auxiliary Hydraulic Lines
    • Additional Counterweight
    • Boom and Stick Hose Burst Check Valves
    • Bucket Linkage with Lift Eye
    • Track Guides
    • Water Jacket Heater
    • Refueling Pump
    • Cab Guarding