The Cat® 305.5E2 CR Mini Hydraulic Excavator delivers high performance, durability and versatility in a compact design to help you work in a variety of applications.
ENGINE Engine Model Cat® C2.4 Net Power 44.1 HP Rated Net Power - 2,200 rpm - ISO 9249/EEC 80/1269 44.1 HP Bore 3.4 in Stroke 4.0 in Displacement 146.0 in³ Gross Power - ISO 14396 45.7 HP Emissions Meets U.S. EPA Tier 4 Final/EU Stage IIIA emission standards. WEIGHTS* Weight - Canopy, Standard Stick 11503.0 lb Operating Weight 11958.0 lb Weight - Cab, Long Stick 11958.0 lb Note Weight includes counterweight, rubber tracks, bucket, operator, full fuel and auxiliary lines. Weight - Cab, Standard Stick 11863.0 lb Weight - Canopy, Long Stick 11596.0 lb TRAVEL SYSTEM Travel Speed - High 2.8 mile/h Maximum Traction Force - High Speed 6025.0 lb Travel Speed - Low 1.7 mile/h Maximum Traction Force - Low Speed 10746.0 lb Ground Pressure - Canopy 4.5 psi Ground Pressure - Cab 4.6 psi Gradeability - Maximum 30° HYDRAULIC SYSTEM Operating Pressure - Travel 3553.0 psi Digging Force - Stick - Long 5575.0 lb Operating Pressure - Swing 3132.0 psi Operating Pressure - Equipment 3553.0 psi Digging Force - Stick - Standard 6500.0 lb Pump Flow at 2,400 rpm 39.6 gal/min Auxiliary Circuit - Secondary (174 bar/2,524 psi) 6.6 gal/min Auxiliary Circuit - Primary (186 bar/2,734 psi) 21.1 gal/min Digging Force - Bucket 11445.0 lb Type Load Sensing Hydraulics with Variable Displacement Piston Pump SWING SYSTEM Machine Swing Speed 10.0 r/min Boom Swing - Right 50° Boom Swing - Left - Without Stop 80° Boom Swing - Left - With Stop 60° Note Automatic swing brake, spring applied, hydraulic release. BLADE Width 78.0 in Height 14.8 in Dig Depth 21.9 in Lift Height 15.9 in SERVICE REFILL CAPACITIES Hydraulic Tank 18.0 gal (US) Cooling System 2.8 gal (US) Fuel Tank 16.6 gal (US) Engine Oil 2.5 gal (US) Hydraulic System 20.6 gal (US) OPERATING SPECIFICATIONS Stick Length - Long 70.0 in Counterweight 364.4 lb Stick Length - Standard 55.0 in DIMENSIONS - STANDARD STICK Boom In Reach 94.0 in O/A Shipping Height 100.0 in Dig Depth 137.0 in Maximum Blade Depth 22.0 in Track Belt/Shoe Width 16.0 in O/A Undercarriage Length 102.0 in Maximum Blade Height 16.0 in O/A Shipping Length 210.0 in Maximum Reach - Ground Level 222.0 in Boom Swing - Right 31.0 in Maximum Dig Height 210.0 in Vertical Wall 92.0 in Tail Swing 44.0 in Boom Height - Shipping Position 69.0 in Boom Swing - Left 27.0 in O/A Track Width 78.0 in Maximum Dump Clearance 150.0 in Swing Bearing - Height 24.0 in Maximum Reach 228.0 in UNDERCARRIAGE Number of Carrier Rollers 1 Track Roller Type Center Flange Number of Track Rollers 4 LIFT CAPACITIES AT GROUND LEVEL - LIFT POINT RADIUS: 3000 MM (9'8”) Blade Up - Front 3417.0 lb Blade Up - Side 2535.0 lb Blade Down - Side 2844.0 lb Blade Down - Front 5710.0 lb LIFT CAPACITIES AT GROUND LEVEL - LIFT POINT RADIUS: 4500 MM (14'9”) Blade Down - Front 3042.0 lb Blade Up - Side 1367.0 lb Blade Up - Front 1808.0 lb Blade Down - Side 1521.0 lb DIMENSIONS - LONG STICK Boom Swing - Right 31.0 in O/A Shipping Length 215.0 in Vertical Wall 107.0 in O/A Shipping Height 100.0 in Maximum Blade Depth 22.0 in Maximum Dump Clearance 161.0 in Maximum Reach - Ground Level 237.0 in Maximum Blade Height 16.0 in Tail Swing 44.0 in Swing Bearing - Height 24.0 in Dig Depth 152.0 in Maximum Dig Height 220.0 in Boom Swing - Left 27.0 in Track Belt/Shoe Width 16.0 in Maximum Reach 243.0 in O/A Track Width 78.0 in Boom In Reach 100.0 in O/A Undercarriage Length 102.0 in Boom Height - Shipping Position 85.0 in CERTIFICATION - CAB AND CANOPY Tip Over Protective Structure (TOPS) ISO 12117 Top Guard ISO 10262 (Level I) Roll Over Protective Structure (ROPS) ISO 12117-2 CAB Dynamic Operator Sound Pressure Level (ISO 6396:2008) 81.0 dB(A) Note European Union Directive “2000/14/EC” Exterior Sound Power Level - ISO 6395:2008 97.0 dB(A) AIR CONDITIONING SYSTEM Air Conditioning The air conditioning system on this machine contains the fluorinated greenhouse gas refrigerant R134a (Global Warming Potential = 1430). The system contains 1.0 kg of refrigerant which has a CO2 equivalent of 1.4 metric tonnes.
QUALITY: The durable hoods and frame and the compact radius design of the 305.5E2 let you work comfortably and confidently in confined areas. The operator environment includes a high quality suspension seat, easy to adjust armrests and 100% pilot controls which offer consistent and long-lasting controllability.
EFFICIENCY: High Definition Hydraulic System provides a load sensing and flow sharing capability leading to operational precision, efficient performance and greater controllability. Power on Demand provides optimal efficiency and performance the moment you need it. This automatic system ensures fuel efficiency through appropriate engine rating to meet all operational needs as required.
VERSATILITY: Broad range of Cat Work Tools make the Cat Mini Excavator a versatile machine able to meet the requirements of any job site. Over 200 degrees of bucket rotation provides greater material retention during truck loading and easier flat wall digging without having to reposition the machine.
PERFORMANCE: Front shovel bucket orientation provides the operator with more ways to get the job done faster. COMPASS Control Panel is a standard feature that allows the operator to easily adjust auxiliary flows to achieve the optimal work tool performance, activate auto idle for improved fuel efficiency and utilize the security system to ensure protection of valuable assets with the simple touch of a button. The Site Reference System included in the COMPASS monitor provides output from pitch and roll sensors to aid in grading and level trenching. This impacts accuracy and productivity for job site finishing.
SERVICEABILITY: Convenient service and maintenance requirements include ease of access to daily check points, 500 hour engine oil and filter change period, 500 hour grease interval on front implement, S•O•SSM oil sampling valve and overall long term durability.
SAFETY: All Cat Mini Excavators from 3.5 metric tons to 8 metric tons are ROPS, TOPS and Top Guard Level 1 certified and include the Cat Interlock (hydraulic lockout) System, a certified accumulator which allows for auxiliary pressure to be released, making connecting and disconnecting work tools safer and easier, and a travel alarm. All of these safety features are standard on the E2 model lineup (travel alarm optional in Europe).
305.5E2 CR STANDARD EQUIPMENT ENGINE • Cat C2.4 diesel engine (meets U.S. EPA Tier 4 Final emission standards for North America and EU Stage IIIA/Tier 4 Interim emission standards for all other regions) • Automatic engine idle • Automatic engine shut-off • Automatic two speed travel • Diesel Particulate Filter (North America only) • Diesel Oxidation Catalyst (North America only) • Fuel and water separator • Power on demand
HYDRAULIC SYSTEM • 1-way and 2-way (combined function) • Accumulator • Automatic swing parking brake • Auxiliary hydraulic lines • Adjustable auxiliary relief • Auxiliary line quick disconnects • Cat interlock system: hydraulic lockout • Continuous auxiliary flow • Ecology drain • Hydraulic oil cooler • High definition hydraulics • Load sensing/flow sharing
OPERATOR ENVIRONMENT • 100% pilot control ergonomic joysticks • Adjustable armrests • COMPASS: complete, operation, maintenance, performance and security system • Multiple languages • Cup holder • Hydraulic neutral lockout bar • Literature holder • Pattern changer (optional in Europe) • Site reference system: leveling • Tool storage area • Travel control pedals with hand levers • Washable floor mat
UNDERCARRIAGE • Dozer blade with float function • Track, rubber belt, 400 mm (16 in) width • Tie down eyes on track frame • Towing eye on base frame
FRONT LINKAGE • 200 degree bucket rotation • Certified lifting eye on bucket linkage (optional in Europe) • Front shovel capable • Thumb ready stick
ELECTRICAL • 12 volt electrical system • 60 ampere alternator • 650 CCA maintenance free battery • Fuse box • Ignition key start/stop switch • Slow blow fuse • Warning horn
LIGHTS AND MIRRORS • Boom light with time delay capability
SAFETY AND SECURITY • Anti-theft system (COMPASS) • Caterpillar Corporate “One Key” System • Door locks • Lockable fuel cap • Retractable seat belt • Roll Over Protective Structure (ROPS) (ISO 12117-2) • Tip Over Protective Structure (TOPS) (ISO 12117) • Top guard – ISO 10262 (Level 1) • Travel alarm (optional in Europe)
TECHNOLOGY • Product Link™
305.5E2 CR OPTIONAL EQUIPMENT ENGINE • Engine block heater
HYDRAULIC SYSTEM • Quick coupler lines • Boom lowering check valve • Stick lowering check valve • Secondary auxiliary hydraulic lines
OPERATOR ENVIRONMENT • Cab: • Air conditioning • Heat • High back suspension seat • Interior light • Interlocking front window system • Radio • Windshield wiper
UNDERCARRIAGE • Power angle blade • Track, double grouser (steel), 400 mm (16 in) • Track, double grouser (steel) with rubber pad, 400 mm (16 in)
FRONT LINKAGE • Quick coupler: manual or hydraulic • Thumb • Buckets • Full range of performance matched work tools • Auger, hammer, ripper
LIGHTS AND MIRRORS • Light, cab with time delay capability • Mirror, canopy right • Mirror, canopy left • Mirror, cab rear
SAFETY AND SECURITY • Battery disconnect • Beacon socket • Front wire mesh guard • Rearview camera • Vandal guard
OTHER ATTACHMENTS • Counterweight, extra
TILTING DITCH CLEANING BUCKETS - MINI EXCAVATOR
CAT MODELS: 305.5 E2 CR11863lbs (5380kg) COMPETITOR MODELS: KOBELCO SK 55 SRX-6E11860lbs (5380kg)
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