306 CR Mini Hydraulic Excavator
306 CR Mini Hydraulic Excavator
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.

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Engine Model Cat C2.4 Turbo
Net Power 55.9 HP
Gross Power - ISO 14396 57.9 HP
Displacement 148 in³
Bore 3.4 in
Stroke 4 in
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.
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 gal/min
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 gal/min
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 gal/min
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
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
Dig Depth 162 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.

  • Your choice of a canopy (availability dependent on region) or a sealed and pressurized cab equipped with an improved air conditioning system, adjustable wrist rests and a suspension seat to help keep you working comfortably all day long.

  • Controls are easy to use and the intuitive Next Generation Monitor provides customizable machine operator preferences and easy to read machine information.

  • Moving around the job site is even easier with Cat Stick Steer. Easily switch from traditional travel controls with levers and pedals to joystick controls with a push of a button. The benefit of less effort and improved control is in your hands!

  • Increased lifting, swinging, travel and multi-functioning performance help you get the job done more efficiently.

  • Your safety is our top priority. The Cat Mini Excavator is designed to help keep you safe on the job. An optional back-up camera, courtesy work lights and a fluorescent retractable seat belt are just a few of the safety features we've built into the machine.

  • Maintenance is quick and easy on the Cat Mini Excavator. Routine check points are easy to access at ground level with grouped service points and robust service panels.

  • Equipped with features such as auto idle, auto engine shutdown, and efficient hydraulics with a variable displacement pump, the Cat Mini Excavator was designed with reducing your operating costs in mind.

  • Configure the machine to meet your specific application needs with a straight blade, angle blade, or Extra Tool Carrier (XTC).

  • Your Cat dealer is here to help you reach your business goals. From providing equipment solutions to operator training to service needs and beyond, your Cat dealer is ready to help.