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306 CR VAB Mini Hydraulic Excavator

The Cat® 306 CR Variable Angle Boom (VAB) Mini Excavator delivers maximum power and performance in a mini size to help you work in a wide range of applications. The Variable Angle Boom provides the maximum in linkage flexibility in tight applications.

Operating Weight 7150 kg
Maximum Operating Weight with Cab** 7248 kg
Minimum Operating Weight with Cab* 6575 kg
Note (1) *Minimum Weight is based on rubber tracks, operator, full fuel tank, standard stick, straight blade and no bucket.
Note (2) **Maximum Weight is based on steel tracks with pads, extra counterweight, operator, full fuel tank, long stick, straight blade and no bucket.

Dig Depth 2975 mm
Boom in Reach 3276 mm
Boom Swing Left 735 mm
Boom Swing Right 910 mm
Cab Height 2545 mm
Ground Clearance 306 mm
Maximum Blade Depth 24 mm
Maximum Blade Height 415 mm
Maximum Dig Height 118.3 mm
Maximum Dump Clearance 100.4 mm
Maximum Reach 153.9 mm
Maximum Reach at Ground Level 3595 mm
Overall Track Width 78 mm
Overall Undercarriage Length 2580 mm
Stick Length 1580 mm
Swing Bearing Height 672 mm
Tail Swing with Counterweight 58 mm
Tail Swing without Counterweight 1350 mm
Track Belt/Shoe Width 400 mm
Vertical Wall 1470 mm
Boom Height in Shipping Position with Attachment* 2405 mm
Boom Height in Shipping Position without Attachment* 2405 mm
Overall Shipping Length with Counterweight with Attachment* 5555 mm
Overall Shipping Length with Counterweight without Attachment* 5295 mm
Overall Shipping Length without Counterweight with Attachment* 5430 mm
Overall Shipping Length without Counterweight without Attachment* 5170 mm
Width Over Upper House 1950 mm

Net Power 41.7 kW
Engine Model Cat C2.4 Turbo
Bore 87 mm
Stroke 102.4 mm
Displacement 2.43 l
Gross Power - ISO 14396 43.2 kW
Note 1 Net power advertised is the power available at the flywheel when the engine is equipped with air cleaner, exhaust system and fan.
Note 2 Advertised power is tested per the specific standard in effect at the time of manufacture.
Rated Net Power - 2,200 rpm - U.S. EPA Tier 4 Final/EU Stage V - ISO 9249/EEC 80/1269 41.7 kW

Fuel Tank 130 l
Cooling System 10 l
Engine Oil 8 l
Hydraulic System 104 l
Hydraulic Tank 53 l

Air Conditioning The air conditioning system on this machine contains the fluorinated greenhouse gas refrigerant R134a (Global Warming Potential = 1430). The system contains 0.9 kg of refrigerant which has a CO2 equivalent of 1.287 metric tonnes.

Straight Blade Height 390 mm
Straight Blade Width 1980 mm

Roll Over Protective Structure (ROPS) ISO 12117-2:2008
Tip Over Protective Structure (TOPS) ISO 12117:1997
Top Guard ISO 10262:1998 - Level II (Optional)

Boom in Reach 104 mm
Boom Swing Left 735 mm
Boom Swing Right 36 mm
Cab Height 100 mm
Dig Depth 155.1 mm
Ground Clearance 12 mm
Maximum Blade Depth 600 mm
Maximum Blade Height 415 mm
Maximum Dig Height 263 mm
Maximum Dump Clearance 5155 mm
Maximum Reach 6855 mm
Maximum Reach at Ground Level 6705 mm
Overall Track Width 78 mm
Overall Undercarriage Length 2580 mm
Stick Length 78 mm
Swing Bearing Height 672 mm
Tail Swing with Counterweight 58 mm
Tail Swing without Counterweight 53 mm
Track Belt/Shoe Width 400 mm
Vertical Wall 129.5 mm
Boom Height in Shipping Position with Attachment* 2405 mm
Boom Height in Shipping Position without Attachment* 2405 mm
Overall Shipping Length with Counterweight with Attachment* 5555 mm
Overall Shipping Length with Counterweight without Attachment* 5295 mm
Overall Shipping Length without Counterweight with Attachment* 5430 mm
Overall Shipping Length without Counterweight without Attachment* 5170 mm
Width Over Upper House 1950 mm

Auxiliary Circuit - Primary - Flow 90 l/min
Auxiliary Circuit - Primary - Pressure 24500 kPa
Auxiliary Circuit - Secondary - Flow 33 l/min
Auxiliary Circuit - Secondary - Pressure 24500 kPa
Digging Force - Bucket 51.5 kN
Digging Force - Stick - Long 25.9 kN
Digging Force - Stick - Standard 28.6 kN
Operating Pressure - Equipment 24500 kPa
Operating Pressure - Swing 22500 kPa
Operating Pressure - Travel 24500 kPa
Pump Flow at 2,400 rpm 151 l/min
Type Load Sensing Hydraulics with Variable Displacement Piston Pump

Average Exterior Sound Pressure (ISO 6395:2008) 99 dB(A)
Note European Union Directive “2000/14/EC”
Operator Sound Pressure (ISO 6396:2008) 72 dB(A)

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

Gradeability - Maximum 30 degrees
Ground Pressure - Maximum Weight 39.5 kPa
Ground Pressure - Minimum Weight 35.9 kPa
Maximum Traction Force - High Speed 31 kN
Maximum Traction Force - Low Speed 56 kN
Travel Speed - High 5 km/h
Travel Speed - Low 2.8 km/h

Counterweight 250 kg
Long Stick 44 kg
Steel Tracks with Pads 375 kg

Boom Height in Shipping Position without Attachment* 2440 mm
Boom in Reach 3341 mm
Boom Swing Left 735 mm
Boom Swing Right 910 mm
Cab Height 2545 mm
Dig Depth 3240 mm
Ground Clearance 306 mm
Maximum Blade Depth 600 mm
Maximum Blade Height 415 mm
Maximum Dig Height 2960 mm
Maximum Dump Clearance 2480 mm
Maximum Reach 4255 mm
Maximum Reach at Ground Level 3980 mm
Overall Shipping Length with Counterweight with Attachment* 5960 mm
Overall Shipping Length with Counterweight without Attachment* 5330 mm
Overall Shipping Length without Counterweight with Attachment* 5835 mm
Overall Shipping Length without Counterweight with Attachment* 229.7 in
Overall Track Width 1980 mm
Overall Undercarriage Length 2580 mm
Stick Length 1580 mm
Swing Bearing Height 672 mm
Tail Swing with Counterweight 1475 mm
Tail Swing without Counterweight 1350 mm
Track Belt/Shoe Width 400 mm
Vertical Wall 1895 mm
Width Over Upper House 1950 mm

Boom Height in Shipping Position without Attachment* 2440 mm
Boom in Reach 3144 mm
Boom Swing Left 735 mm
Boom Swing Right 910 mm
Cab Height 2545 mm
Dig Depth 4340 mm
Ground Clearance 306 mm
Maximum Blade Depth 600 mm
Maximum Blade Height 415 mm
Maximum Dig Height 6995 mm
Maximum Dump Clearance 5465 mm
Maximum Reach 7240 mm
Maximum Reach at Ground Level 7100 mm
Overall Shipping Length with Counterweight with Attachment* 5960 mm
Overall Shipping Length with Counterweight without Attachment* 5330 mm
Overall Shipping Length without Counterweight with Attachment* 5835 mm
Overall Shipping Length without Counterweight without Attachment* 5205 mm
Overall Track Width 1980 mm
Overall Undercarriage Length 2580 mm
Stick Length 1980 mm
Swing Bearing Height 672 mm
Tail Swing with Counterweight 1475 mm
Tail Swing without Counterweight 1350 mm
Track Belt/Shoe Width 400 mm
Vertical Wall 3720 mm
Width Over Upper House 1950 mm

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