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 |
| Operating Weight | 15766 lb |
| Dig Depth | 162 in |
| Net Power | 55.9 hp |
| Gross Power – ISO 14396 | 57.9 hp |
| Displacement | 148 in³ |
| Bore | 3.4 in |
| Stroke | 4 in |
| Engine Model | Cat C2.4 Turbo |
| Net Power @ 2,200 rpm – U.S. EPA Tier 4 Final/EU Stage V – ISO 9249/EEC 80/1269 | 55.9 hp |
| Operating Weight | 15766 lb |
| Minimum Operating Weight with Canopy* | 14134 lb |
| Maximum Operating Weight with Canopy** | 15633 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** | 15766 lb |
| Minimum Operating Weight with Cab* | 14266 lb |
| Note (1) | *Minimum Weight is based on rubber tracks, operator, full fuel tank, standard stick, fixed blade and no bucket. |
| Dig Depth | 162 in |
| Maximum Blade Height | 16 in |
| O/A Track Width | 78 in |
| Track Belt/Shoe Width | 16 in |
| Tail Swing with Counterweight | 58 in |
| Vertical Wall | 125 in |
| Boom In Reach | 117 in |
| Maximum Blade Depth | 24 in |
| Maximum Dig Height | 241 in |
| Transport Height | 95 in |
| Stick Length | 78 in |
| Ground Clearance | 12 in |
| Swing Bearing – Height | 27 in |
| Width over Upper House | 77 in |
| O/A Undercarriage Length | 102 in |
| O/A Shipping Length | 234 in |
| Cab Height | 100 in |
| Maximum Reach | 263 in |
| Boom Swing – Left | 29 in |
| Tail Swing without Counterweight | 53 in |
| Boom Swing – Right | 36 in |
| Maximum Dump Clearance | 182 in |
| Maximum Reach – Ground Level | 257 in |
| 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. |
| Recyclability | 96% |
| Counterweight | 551 lb |
| Long Stick | 97 lb |
| Steel Tracks with Pads | 827 lb |
| Angle Blade | 225 lb |
| XTC Carriage (no tool) | 141 lb |
| Ground Pressure – Minimum Weight | 5.1 psi |
| Ground Pressure – Maximum Weight | 5.7 psi |
| Gradeability – Maximum | 30 degrees |
| 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 |
| 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) |
| Operating Pressure – Travel | 3553 psi |
| Auxiliary Circuit – Primary – Flow | 24 gpm |
| Digging Force – Bucket | 11578 lbf |
| Auxiliary Circuit – Primary – Pressure | 3553 psi |
| Type | Load Sensing Hydraulics with Variable Displacement Piston Pump |
| Auxiliary Circuit – Secondary – Flow | 9 gpm |
| Operating Pressure – Equipment | 3553 psi |
| Auxiliary Circuit – Secondary – Pressure | 3553 psi |
| Digging Force – Stick – Standard | 6632 lbf |
| Operating Pressure – Swing | 3263 psi |
| Digging Force – Stick – Long | 5957 lbf |
| Pump Flow at 2,400 rpm | 40 gpm |
| Boom Swing – Right | 65 degrees |
| Boom Swing – Left | 60 degrees |
| Machine Swing Speed | 11 r/min |
| Straight Blade Width | 78 in |
| Angle Blade Width | 78 in |
| Straight Blade Height | 15.4 in |
| Angle Blade Height | 15.7 in |
| Top Guard | ISO 10262:1998 (Level II) |
| Roll Over Protective Structure (ROPS) | ISO 12117-2:2008 |
| Tip Over Protective Structure (TOPS) | ISO 12117:1997 |
| Operator Sound Pressure (ISO 6396:2008) | 72 dB(A) |
| Average Exterior Sound Pressure (ISO 6395:2008) | 99 dB(A) |
| Note | European Union Directive “2000/14/EC” |
| Track Belt/Shoe Width | 16 in |
| Maximum Reach | 248 in |
| Stick Length | 62 in |
| Vertical Wall | 107 in |
| Swing Bearing – Height | 27 in |
| Maximum Reach – Ground Level | 241 in |
| Maximum Blade Height | 16 in |
| Ground Clearance | 12 in |
| Boom In Reach | 98 in |
| Boom Swing – Right | 36 in |
| Transport Height | 69 in |
| Tail Swing with Counterweight | 58 in |
| Cab Height | 100 in |
| Width over Upper House | 77 in |
| Maximum Dump Clearance | 170 in |
| Tail Swing without Counterweight | 53 in |
| Boom Swing – Left | 29 in |
| O/A Undercarriage Length | 102 in |
| Maximum Dig Height | 230 in |
| Maximum Blade Depth | 24 in |
| O/A Track Width | 78 in |
| Dig Depth | 146 in |
| O/A Shipping Length | 235 in |
| 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 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 |
| 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 |
| 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 |
| 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 |
| Locks on External Enclosure Doors |
| Lockable Fuel Cap |
| Beacon Socket |
| Rear Reflectors |
| 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 |
| Cab Heat Only |
| Air Suspension Heated Seat |
| Angle Blade |
| Extra Tool Carrier (XTC) |
| Steel Tracks (450 mm/17.7 in wide) |
| Steel Track with Rubber Pads |
| 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 |
| Product Link Elite (regulations apply) |
| Camera |
| Rotating Beacon |
| 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 |
| Additional Counterweight |
| Water Jacket Heater |
| Refueling Pump |
