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306 CR Mini Hydraulic Excavator

306 CR Mini Hydraulic Excavator

Mini Excavators Inspired by Our Customers

More Comfort ā€“ More Performance ā€“ More Versatility

  • 4 Industry First Features

    Cat Exclusives in a Mini Excavator

  • Up to 10% Lower Total Ownership Costs

    with improved fuel efficiency and longer service intervals

  • Up to 20% More Performance

    with customizable operator settings and improvements in lift, swing, travel and multifunction

Engine

Bore 3.4 in
Displacement 148 inĀ³
Engine Model Cat C2.4 Turbo
Gross Power - ISO 14396 57.9 HP
Net Power 55.9 HP
Net Power @ 2,200 rpm - U.S. EPA Tier 4 Final/EU Stage V - ISO 9249/EEC 80/1269 55.9 HP
Stroke 4 in

Weights

Maximum Operating Weight with Cab** 15766 lb
Maximum Operating Weight with Canopy** 15633 lb
Minimum Operating Weight with Cab* 14266 lb
Minimum Operating Weight with Canopy* 14134 lb
Note (1) *Minimum Weight is based on rubber tracks, operator, full fuel tank, standard stick, fixed blade and no bucket.
Note (2) **Maximum Weight is based on steel tracks with pads, extra counterweight, operator, full fuel tank, long stick, fixed blade and no bucket.
Operating Weight 15766 lb

Weight Increase from Minimum Configuration

Angle Blade 225 lb
Counterweight 551 lb
Long Stick 97 lb
Steel Tracks with Pads 827 lb
XTC Carriage (no tool) 141 lb

Travel System

Gradeability - Maximum 30 degrees
Ground Pressure - Maximum Weight 5.7 psi
Ground Pressure - Minimum Weight 5.1 psi
Maximum Traction Force - High Speed 6969 lbf
Maximum Traction Force - Low Speed 12589 lbf
Travel Speed - High 3.1 mile/h
Travel Speed - Low 1.7 mile/h

Service Refill Capacities

Cooling System 2.6 gal (US)
Engine Oil 2.1 gal (US)
Fuel Tank 34.3 gal (US)
Hydraulic System 27.5 gal (US)
Hydraulic Tank 14 gal (US)

Hydraulic System

Auxiliary Circuit - Primary - Flow 24 gal/min
Auxiliary Circuit - Primary - Pressure 3553 psi
Auxiliary Circuit - Secondary - Flow 9 gal/min
Auxiliary Circuit - Secondary - Pressure 3553 psi
Digging Force - Bucket 11578 lbf
Digging Force - Stick - Long 5957 lbf
Digging Force - Stick - Standard 6632 lbf
Operating Pressure - Equipment 3553 psi
Operating Pressure - Swing 3263 psi
Operating Pressure - Travel 3553 psi
Pump Flow at 2,400 rpm 40 gal/min
Type Load Sensing Hydraulics with Variable Displacement Piston Pump

Swing System

Boom Swing - Left 60 degrees
Boom Swing - Right 65 degrees
Machine Swing Speed 11 r/min

Blade

Angle Blade Height 15.7 in
Angle Blade Width 78 in
Straight Blade Height 15.4 in
Straight Blade Width 78 in

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 II)

Sound

Average Exterior Sound Pressure (ISO 6395:2008) 99 dB(A)
Note European Union Directive ā€œ2000/14/ECā€
Operator Sound Pressure (ISO 6396:2008) 72 dB(A)

Dimensions - Standard Stick

Boom In Reach 98 in
Boom Swing - Left 29 in
Boom Swing - Right 36 in
Cab Height 100 in
Dig Depth 146 in
Ground Clearance 12 in
Maximum Blade Depth 24 in
Maximum Blade Height 16 in
Maximum Dig Height 230 in
Maximum Dump Clearance 170 in
Maximum Reach 248 in
Maximum Reach - Ground Level 241 in
O/A Shipping Length 235 in
O/A Track Width 78 in
O/A Undercarriage Length 102 in
Stick Length 62 in
Swing Bearing - Height 27 in
Tail Swing with Counterweight 58 in
Tail Swing without Counterweight 53 in
Track Belt/Shoe Width 16 in
Transport Height 69 in
Vertical Wall 107 in
Width over Upper House 77 in

Dimensions - Long Stick

Boom In Reach 117 in
Boom Swing - Left 29 in
Boom Swing - Right 36 in
Cab Height 100 in
Dig Depth 162 in
Ground Clearance 12 in
Maximum Blade Depth 24 in
Maximum Blade Height 16 in
Maximum Dig Height 241 in
Maximum Dump Clearance 182 in
Maximum Reach 263 in
Maximum Reach - Ground Level 257 in
O/A Shipping Length 234 in
O/A Track Width 78 in
O/A Undercarriage Length 102 in
Stick Length 78 in
Swing Bearing - Height 27 in
Tail Swing with Counterweight 58 in
Tail Swing without Counterweight 53 in
Track Belt/Shoe Width 16 in
Transport Height 95 in
Vertical Wall 125 in
Width over Upper House 77 in

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.

Sustainability

Recyclability 96%

Download resources

306 CR Product Brochure
Cat Mini Hydraulic Excavators Product Line Brochure (North America)
Cat Mini Hydraulic Excavators Product Line Brochure (Europe)
Options And Accessories Kit Guide for Mini Hydraulic Excavators
Cat Attachments for Mini Excavators Brochure
Attachment Compatibility Guide for Mini Excavators

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