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303.5E2 CR Hydraulic Excavator

The Cat E2 Series Mini Hydraulic Excavators are designed to carry on the solid performance of their E Series predecessors, while adding even greater value for the customer. The new High Definition Hydraulic (HDH) System, redesigned operator station and enhanced digital control panel specially designed for Cat Mini Excavators – COMPASS (Complete, Operation, Maintenance, Performance And Security System) – are all standard features that improve performance and increase value.

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SPECIFICATION SUMMARY
  • Engine Model Cat® C1.7
  • Net Power 23.5 hp
  • Operating Weight 8209 lb
  • Gross Power 24.8 hp

PRICE (USD)
Call 800-637-5000 for rate information

Engine

  • Engine Model
    Cat® C1.7
  • Net Power
    23.5 hp
  • Gross Power
    24.8 hp
  • Bore
    3.4 in
  • Stroke
    3.6 in
  • Displacement
    104 in3
  • Net Power (ISO 9249)
    23.5 hp
  • Rated Net Power (ISO 9249)
    23.5 hp
  • Note
    Cat C1.7 engine meets U.S. EPA Tier 4 Final/EU Stage IIIB emission standards.
  • Engine Model
    Cat® C1.7
  • Net Power
    23.5 HP
  • Gross Power
    24.8 HP
  • Bore
    3.4 in
  • Displacement
    104 in³
  • Stroke
    3.6 in
  • Net Power - ISO 9249
    23.5 HP
  • Note
    Cat C1.7 engine meets U.S. EPA Tier 4 Final/EU Stage IIIB emission standards.
  • Rated Net Power - ISO 9249
    23.5 HP

Weights

  • Operating Weight
    8209 lb
  • Operating Weight - With Cab
    8209 lb
  • Operating Weight with Canopy
    7803 lb
  • Note
    Weight includes rubber tracks, bucket, operator, full fuel and auxiliary lines.
  • Operating Weight
    8209 lb
  • Note
    Weight includes rubber tracks, bucket, operator, full fuel and auxiliary lines.
  • Operating Weight - With Canopy
    7803 lb
  • Note
    7803 lb

Swing System

  • Machine Swing Speed
    10 rpm
  • Boom Swing - Left - Without Stop
    80°
  • Boom Swing - Left - With Stop
    55°
  • Swing - Right
    50°
  • Machine Swing Speed
    10 r/min

Blade

  • Width
    70 in
  • Height
    13 in
  • Dig Depth
    19 in
  • Lift Height
    16 in
  • Width
    70 in

Service Refill Capacities

  • Cooling System
    1.5 gal
  • Engine Oil
    1.8 gal
  • Hydraulic Tank
    11.2 gal
  • Fuel Tank
    12.2 gal
  • Hydraulic System
    17.2 gal
  • Cooling System
    1.5 gal (US)
  • Engine Oil
    1.8 gal (US)
  • Hydraulic Tank
    11.2 gal (US)
  • Fuel Tank
    12.2 gal (US)
  • Hydraulic System
    17.2 gal (US)

Travel System

  • Travel Speed – High
    2.9 mph
  • Travel Speed – Low
    2.0 mph
  • Maximum Traction Force - High Speed
    3822 lbf
  • Maximum Traction Force - Low Speed
    6992 lbf
  • Ground Pressure
    4.6 psi
  • Travel Speed - High
    2.9 mile/h
  • Travel Speed - Low
    2 mile/h
  • Ground Pressure
    4.6 psi

Hydraulic System

  • Pump Flow
    26.4 gal/min
  • Operating Pressure - Equipment
    3553 psi
  • Operating Pressure - Travel
    3553 psi
  • Operating Pressure - Swing
    3132 psi
  • Auxiliary Circuit - Primary
    18.5 gal/min
  • Auxiliary Circuit - Secondary
    6.6 gal/min
  • Digging Force - Stick - Standard
    4249 lbf
  • Digging Force - Stick - Long
    3799 lbf
  • Digging Force = Bucket
    7419 lbf
  • Type
    Load Sensing Hydraulics with Variable Displacement Piston Pump
  • Digging Force - Bucket
    7419 lbf
  • Note
    Flow and pressure are not combinable. Under load, as flow rises pressure goes down.
  • Maximum Auxiliary Circuit - Secondary - Pressure at Pump
    3553 psi
  • Pump Flow at 2,200 rpm
    26.4 gal/min

Operating Specifications

  • Maximum Dig Depth
    125 in
  • Maximum Dig Depth
    125 in

Operator Station

Operation and Hydraulic Control

Engine

COMPASS Control Panel

Compact Radius Design

Undercarriage

Dozer Blade

Coupler and Work Tool Options

Serviceability and Support

Standard Equipment:

  • Engine
    • Cat C1.7 Tier 4 Final diesel engine
    • Automatic engine idle
    • Automatic engine shut-off
    • Automatic two speed travel
    • Fuel and water separator
  • 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
    • 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, 300 mm (12 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
    • 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 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), 300 mm (12 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
  • Technology
    • Product Link
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