Caterpillar 305.5E2 CR
The Cat 305.5E2 CR is a compact-radius mini hydraulic excavator in the 5-tonne class, powered by a Cat C2.4 diesel rated 44.2 hp net (45.7 hp gross) meeting EPA Tier 4 Interim / EU Stage IIIA. It weighs 11,958 lb with cab (11,596 lb with canopy), digs to 152 in, and develops 6,497 lbf stick and 11,443 lbf bucket digging force. Hydraulics are load-sensing with a variable displacement piston pump flowing 43.1 gpm at 3,553 psi, plus 21.1 gpm primary and 6.6 gpm secondary auxiliary circuits.
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Caterpillar 305.5E2 CR specs
Bore3.4 in (87 mm)
Blade78 in wide x 14.8 in high (1,980 x 375 mm)
EngineCat C2.4 diesel
Stroke4 in (102.4 mm)
EmissionsU.S. EPA Tier 4 Interim / EU Stage IIIA
Fuel Tank16.6 gal (63 L)
Net Power44.2 hp (32.9 kW)
Pump Flow43.1 gpm (163 L/min)
Gross Power45.7 hp (34.1 kW)
Displacement146 in3 (2.4 L)
Hydraulic Tank18 gal (68.3 L)
Hydraulic TypeLoad sensing, variable displacement piston pump
Ground Pressure4.7 psi (32.2 kPa)
Operating Weight11,958 lb (5,423 kg)
Maximum Dig Depth152 in (3,870 mm)
Travel Speed - Low1.7 mph (2.8 km/h)
Travel Speed - High2.8 mph (4.5 km/h)
Digging Force - Bucket11,443 lbf (50.9 kN)
Operating Pressure - Swing3,132 psi (216 bar)
Rated Net Power - ISO 924944.1 hp (32.9 kW)
Auxiliary Circuit - Primary21.1 gpm (80 L/min)
Operating Pressure - Travel3,553 psi (245 bar)
Operating Weight - With Cab11,958 lb (5,423 kg)
Digging Force - Stick (Long)5,575 lbf (24.8 kN)
Auxiliary Circuit - Secondary6.6 gpm (25 L/min)
Max Traction Force - Low Speed10,745 lbf (47.8 kN)
Operating Pressure - Equipment3,553 psi (245 bar)
Operating Weight - With Canopy11,596 lb (5,259 kg)
Max Traction Force - High Speed6,025 lbf (26.8 kN)
Digging Force - Stick (Standard)6,497 lbf (28.9 kN)
From the Caterpillar 305.5E2 CR spec sheet (Cat 305.5E2 CR (Tier 4 Interim) Mini Excavators — Caterpillar product specifications ↗). Check the nameplate on the unit.
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