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Mini Excavators 305 CR

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

Mini Excavators 305 CR

An extensive line of Cat® mini hydraulic excavators offers the performance to dig in and be productive on every job.
Units: USMetric
Angle Blade Width 78 in 1980 mm
Straight Blade Height 15.4 in 390 mm
Straight Blade Width 78 in 1980 mm
Angle Blade Height 15.7 in 400 mm
Angle Blade - Left 25 degrees
Angle Blade - Right 25 degrees
Units: USMetric
Top Guard ISO 10262:1998 Level I
Roll Over Protective Structure (ROPS) ISO 12117-2:2008
Tip Over Protective Structure (TOPS) ISO 12117:1997
Units: USMetric
Dig Depth 144.5 in 3670 mm
Stick Length 63 in 1601 mm
Track Width 78 in 1980 mm
Maximum Blade Depth 23.4 in 595 mm
Maximum Dump Clearance 151.4 in 3845 mm
Boom Swing - Left 615 mm 24.2 °
Boom Swing - Right 34.1 ° 865 mm
Swing Bearing - Height 24.4 in 619 mm
Boom Height - Shipping Position 74.6 in 1895 mm
Boom In Reach 101.6 in 2580 mm
Maximum Reach 235.8 in 5990 mm
Track Belt/Shoe Width 15.7 in 400 mm
Maximum Reach - Ground Level 229.7 in 5835 mm
Maximum Blade Height 15.2 in 385 mm
O/A Shipping Height 100.4 in 2550 mm
Tail Swing without Counterweight 43.1 in 1095 mm
O/A Undercarriage Length 101.6 in 2580 mm
Tail Swing with Counterweight 47.2 in 1200 mm
Vertical Wall 100.8 in 2560 mm
Note *Overall Shipping Length depends on blade position during shipment.
Overall Shipping Length* 210.2 in 5340 mm
Maximum Dig Height 210.8 in 5355 mm
Ground Clearance 13.2 in 335 mm
Units: USMetric
Maximum Dig Height 205.3 in 5215 mm
Maximum Blade Height 15.2 in 385 mm
Dig Depth 134.6 in 3420 mm
Boom Swing - Right 34.1 ° 865 mm
Maximum Reach - Ground Level 220.1 in 5590 mm
Tail Swing without Counterweight 43.1 in 1095 mm
Boom Height - Shipping Position 71.7 in 1820 mm
Maximum Blade Depth 23.4 in 595 mm
Maximum Reach 226.6 in 5755 mm
Boom Swing - Left 24.2 ° 615 mm
Overall Shipping Length* 208.9 in 5305 mm
O/A Undercarriage Length 101.6 in 2580 mm
Swing Bearing - Height 24.4 in 619 mm
Stick Length 53.2 in 1351 mm
Track Belt/Shoe Width 15.7 in 400 mm
Boom In Reach 101.2 in 2570 mm
Vertical Wall 91.9 in 2335 mm
Tail Swing with Counterweight 47.2 in 1200 mm
Maximum Dump Clearance 145.7 in 3700 mm
O/A Shipping Height 100.4 in 2550 mm
Note *Overall Shipping Length depends on blade position during shipment.
Ground Clearance 13.2 in 335 mm
Units: USMetric
Net Power 45 HP 33.6 kW
Engine Model C1.7 Turbo
Net Power - 2,400 rpm - ISO 9249, 80/1269/EEC 45 HP 33.6 kW
Note Advertised power is tested per the specified standard in effect at the time of manufacture.
Gross Power - 2,400 rpm - SAE J1995:2014 48.4 HP 36.1 kW
Stroke 3.9 in 100 mm
Bore 3.3 in 84 mm
Displacement 101 in³ 1.662 l
Emissions The Cat® C3.3B engine meets U.S. EPA Tier 4 Final and EU Stage V emission standards.
Units: USMetric
Auxiliary Circuit - Secondary - Pressure 3843 psi 265 bar
Pump Flow at 2,400 rpm 35 gal/min 133 l/min
Operating Pressure - Swing 2901 psi 200 bar
Operating Pressure - Travel 3843 psi 265 bar
Auxiliary Circuit - Secondary - Flow 7 gal/min 28 l/min
Digging Force - Stick - Standard 6362 lbf 28.3 kN
Auxiliary Circuit - Primary - Pressure 3843 psi 265 bar
Auxiliary Circuit - Primary - Flow 21 gal/min 80 l/min
Digging Force - Bucket 11061 lbf 49.2 kN
Operating Pressure - Equipment 3843 psi 265 bar
Note Flow and pressure are not combinable. Under load, as flow rises pressure goes down.
Type Load Sensing Hydraulics with Variable Displacement Piston Pump
Digging Force - Stick - Long 5665 lbf 25.2 kN
Units: USMetric
Hydraulic Tank 16 gal (US) 60 l
Fuel Tank 17 gal (US) 63 l
Engine Oil 1.6 gal (US) 6 l
Hydraulic System 20 gal (US) 75 l
Cooling System 2.9 gal (US) 11 l
Units: USMetric
Average Exterior Sound Pressure (ISO 6395:2008) 99 dB(A) 99 dB(A)
Note *The declared dynamic operator sound pressure levels per ISO 6396:2008. The measurements were conducted with the cab doors and windows closed. **The labeled sound power level for the CE marked configurations when measured according to the test procedure and conditions specified in 2000/14/EC.
Operator Sound Pressure (ISO 6396:2008) 72 dB(A) 72 dB(A)
Units: USMetric
Recyclability 96%
Units: USMetric
Boom Swing - Left 72 Degrees
Machine Swing Speed 9 r/min 9 r/min
Boom Swing - Right 50 Degrees
Units: USMetric
Ground Pressure - Minimum Weight 4 psi 27.3 kPa
Maximum Traction Force - Low Speed 11353 lbf 50.5 kN
Ground Pressure - Maximum Weight 4.7 psi 32.2 kPa
Travel Speed - Low 1.7 mile/h 2.8 km/h
Maximum Traction Force - High Speed 5553 lbf 24.7 kN
Travel Speed - High 3.1 mile/h 5 km/h
Gradeability - Maximum 30 degrees
Units: USMetric
Counterweight 534 lb 242 kg
Long Stick 75 lb 34 kg
Steel Tracks with Pads 827 lb 375 kg
Angle Blade 225 lb 102 kg
Units: USMetric
Operating Weight 12688 lb 5754 kg
Minimum Operating Weight with Canopy* 11016 lb 4996 kg
Note (1) *Minimum Weight is based on rubber tracks, operator, full fuel tank, standard stick, straight blade, no bucket and no extra counterweight.
Minimum Operating Weight with Cab* 11234 lb 5095 kg
Maximum Operating Weight with Cab** 12688 lb 5754 kg
Maximum Operating Weight with Canopy** 12469 lb 5655 kg
Note (2) **Maximum Weight is based on steel tracks with pads, operator, full fuel tank, long stick, straight blade, extra counterweight and no bucket.
ENGINE
Cat® C1.7 Turbo Engine (U.S. EPA Tier 4 Final)
HYDRAULICS
Smart Tech Electronic Pump
OPERATOR ENVIRONMENT
Canopy or Cab
UNDERCARRIAGE
Rubber Belt (400 mm/15.7 in)
BOOM, STICK AND LINKAGES
One Piece Boom (2716 mm/106.9 in)
ELECTRICAL
12 Volt Battery

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