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Key Specs
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.
Cat Exclusives in a Mini Excavator
with improved fuel efficiency and longer service intervals
with customizable operator settings and improvements in lift, swing, travel and multifunction
| Net Power | 55.9 hp 41.7 kW |
| Gross Power - ISO 14396 | 57.9 hp 43.2 kW |
| Displacement | 148 in³ 2.43 l |
| Bore | 3.4 in 87 mm |
| Stroke | 4 in 102.4 mm |
| Engine Model | Cat C2.4 Turbo 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 41.7 kW |
| Operating Weight | 15766 lb 7150 kg |
| Minimum Operating Weight with Canopy* | 14134 lb 6410 kg |
| Maximum Operating Weight with Canopy** | 15633 lb 7090 kg |
| 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 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 7150 kg |
| Minimum Operating Weight with Cab* | 14266 lb 6470 kg |
| Note (1) | *Minimum Weight is based on rubber tracks, operator, full fuel tank, standard stick, fixed blade and no bucket. *Minimum Weight is based on rubber tracks, operator, full fuel tank, standard stick, fixed blade and no bucket. |
| Counterweight | 551 lb 250 kg |
| Long Stick | 97 lb 44 kg |
| Steel Tracks with Pads | 827 lb 375 kg |
| Angle Blade | 225 lb 102 kg |
| XTC Carriage (no tool) | 141 lb 64 kg |
| Ground Pressure - Minimum Weight | 5.1 psi 35.4 kPa |
| Ground Pressure - Maximum Weight | 5.7 psi 39.1 kPa |
| Gradeability - Maximum | 30 degrees 30 degrees |
| Maximum Traction Force - High Speed | 6969 lbf 31 kN |
| Maximum Traction Force - Low Speed | 12589 lbf 56 kN |
| Travel Speed - High | 3.1 mile/h 5 km/h |
| Travel Speed - Low | 1.7 mile/h 2.8 km/h |
| Cooling System | 2.6 gal (US) 10 l |
| Hydraulic System | 27.5 gal (US) 104 l |
| Hydraulic Tank | 14 gal (US) 53 l |
| Engine Oil | 2.1 gal (US) 8 l |
| Fuel Tank | 34.3 gal (US) 130 l |
| Operating Pressure - Travel | 3553 psi 24500 kPa |
| Auxiliary Circuit - Primary - Flow | 24 gal/min 90 l/min |
| Digging Force - Bucket | 11578 lbf 51.5 kN |
| Auxiliary Circuit - Primary - Pressure | 3553 psi 24500 kPa |
| Type | Load Sensing Hydraulics with Variable Displacement Piston Pump Load Sensing Hydraulics with Variable Displacement Piston Pump |
| Auxiliary Circuit - Secondary - Flow | 9 gal/min 33 l/min |
| Operating Pressure - Equipment | 3553 psi 24500 kPa |
| Auxiliary Circuit - Secondary - Pressure | 3553 psi 24500 kPa |
| Digging Force - Stick - Standard | 6632 lbf 29.5 kN |
| Operating Pressure - Swing | 3263 psi 22500 kPa |
| Digging Force - Stick - Long | 5957 lbf 26.5 kN |
| Pump Flow at 2,400 rpm | 40 gal/min 151 l/min |
| Boom Swing - Right | 65 degrees 65 degrees |
| Boom Swing - Left | 60 degrees 60 degrees |
| Machine Swing Speed | 11 r/min 11 r/min |
| Straight Blade Width | 78 in 1980 mm |
| Angle Blade Width | 78 in 1980 mm |
| Straight Blade Height | 15.4 in 390 mm |
| Angle Blade Height | 15.7 in 400 mm |
| Top Guard | ISO 10262:1998 (Level II) ISO 10262:1998 (Level II) |
| Roll Over Protective Structure (ROPS) | ISO 12117-2:2008 ISO 12117-2:2008 |
| Tip Over Protective Structure (TOPS) | ISO 12117:1997 ISO 12117:1997 |
| Operator Sound Pressure (ISO 6396:2008) | 72 dB(A) 72 dB(A) |
| Average Exterior Sound Pressure (ISO 6395:2008) | 99 dB(A) 99 dB(A) |
| Note | European Union Directive “2000/14/EC” European Union Directive “2000/14/EC” |
| Track Belt/Shoe Width | 16 in 400 mm |
| Maximum Reach | 248 in 6295 mm |
| Stick Length | 62 in 1580 mm |
| Vertical Wall | 107 in 2710 mm |
| Swing Bearing - Height | 27 in 672 mm |
| Maximum Reach - Ground Level | 241 in 6130 mm |
| Maximum Blade Height | 16 in 415 mm |
| Ground Clearance | 12 in 306 mm |
| Boom In Reach | 98 in 2485 mm |
| Boom Swing - Right | 36 in 910 mm |
| Transport Height | 69 in 1755 mm |
| Tail Swing with Counterweight | 58 in 1475 mm |
| Cab Height | 100 in 2545 mm |
| Width over Upper House | 77 in 1950 mm |
| Maximum Dump Clearance | 170 in 4325 mm |
| Tail Swing without Counterweight | 53 in 1350 mm |
| Boom Swing - Left | 29 in 735 mm |
| O/A Undercarriage Length | 102 in 2580 mm |
| Maximum Dig Height | 230 in 5835 mm |
| Maximum Blade Depth | 24 in 600 mm |
| O/A Track Width | 78 in 1980 mm |
| Dig Depth | 146 in 3710 mm |
| O/A Shipping Length | 235 in 5975 mm |
| Dig Depth | 162 in 4110 mm |
| Maximum Blade Height | 16 in 415 mm |
| O/A Track Width | 78 in 1980 mm |
| Track Belt/Shoe Width | 16 in 400 mm |
| Tail Swing with Counterweight | 58 in 1475 mm |
| Vertical Wall | 125 in 3165 mm |
| Boom In Reach | 117 in 2960 mm |
| Maximum Blade Depth | 24 in 600 mm |
| Maximum Dig Height | 241 in 6130 mm |
| Transport Height | 95 in 2410 mm |
| Stick Length | 78 in 1980 mm |
| Ground Clearance | 12 in 306 mm |
| Swing Bearing - Height | 27 in 672 mm |
| Width over Upper House | 77 in 1950 mm |
| O/A Undercarriage Length | 102 in 2580 mm |
| O/A Shipping Length | 234 in 5950 mm |
| Cab Height | 100 in 2545 mm |
| Maximum Reach | 263 in 6685 mm |
| Boom Swing - Left | 29 in 735 mm |
| Tail Swing without Counterweight | 53 in 1350 mm |
| Boom Swing - Right | 36 in 910 mm |
| Maximum Dump Clearance | 182 in 4610 mm |
| Maximum Reach - Ground Level | 257 in 6535 mm |
| 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. 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% 96% |
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VisionLink® is a cloud-based software application that takes the guesswork out of fleet management with key insights to maximize performance - regardless of fleet size or equipment manufacturer. Receive equipment data seamlessly to your desktop or mobile device, all from a convenient centralized solution to make informed decisions at every turn.
VisionLink® is a cloud-based software application that takes the guesswork out of fleet management with key insights to maximize performance - regardless of fleet size or equipment manufacturer. Receive equipment data seamlessly to your desktop or mobile device, all from a convenient centralized solution to make informed decisions at every turn.
