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Mini Excavators 306 CR

An extensive line of Cat® mini hydraulic excavators offers the performance to dig in and be productive on every job.

Mini Excavators 306 CR

An extensive line of Cat® mini hydraulic excavators offers the performance to dig in and be productive on every job.
Units: USMetric

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.
Units: USMetric

Blade

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
Units: USMetric

Certification - Cab

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

Dimensions - Long Stick

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
Dig Depth 162 in 4110 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
Units: USMetric

Dimensions - Standard Stick

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
Units: USMetric

Engine

Engine Model Cat C2.4 Turbo
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
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
Units: USMetric

Hydraulic System

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
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
Units: USMetric

Service Refill Capacities

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
Units: USMetric

Sound

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”
Units: USMetric

Swing System

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

Travel System

Ground Pressure - Minimum Weight 5.1 psi 35.4 kPa
Ground Pressure - Maximum Weight 5.7 psi 39.1 kPa
Gradeability - Maximum 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
Units: USMetric

Weight Increase from Minimum Configuration

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
Units: USMetric

Weights

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 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.
OPERATOR ENVIRONMENT – CAB AND CANOPY
Top Guard ISO 10262 1998 Level I
OPERATOR ENVIRONMENT – CAB ONLY
Operator Sound Pressure 72 dB(A) ISO 6396:2008
UNDERCARRIAGE
Greased and Lubricated Track
BOOM, STICK AND LINKAGES
One Piece Boom (3055 mm/120.3 in)
ELECTRICAL
12 Volt Electrical System
OTHER
Locks on External Enclosure Doors

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