303.5E2 CR Hydraulic Excavator

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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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  • Standard Equipment
  • Optional Equipment
  • Specs

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™

Specs

Overview

Long Name:
303.5E2 CR Hydraulic Excavator
Name:
303.5E2 CR
Brand:
Caterpillar
Status:
Current

Engine

Net Power:
23.5 HP / 17.5 kW
Engine Model:
Cat® C1.7
Gross Power:
24.8 HP / 18.5 kW

Weights

Operating Weight:
8209 lb / 3723 kg
Operating Weight - With Cab:
8209 lb / 3723 kg

Engine

Bore:
3.4 in / 87 mm
Displacement:
104 in³ / 1.7 l
Stroke:
3.6 in / 92.4 mm

Travel System

Travel Speed - Low:
2 mile/h / 3.2 km/h
Maximum Traction Force - High Speed:
3822 lbf / 17 kN
Travel Speed - High:
2.9 mile/h / 4.6 km/h
Maximum Traction Force - Low Speed:
6992 lbf / 31.1 kN

Hydraulic System

Operating Pressure - Equipment:
3553 psi / 245 bar
Digging Force - Stick - Standard:
4249 lbf / 18.9 kN
Pump Flow at 2,200 rpm:
26.4 gal/min / 100 l/min
Operating Pressure - Travel:
3553 psi / 245 bar
Operating Pressure - Swing:
3132 psi / 216 bar
Digging Force - Stick - Long:
3799 lbf / 16.9 kN
Type:
Load Sensing Hydraulics with Variable Displacement Piston Pump
Note:
Flow and pressure are not combinable. Under load, as flow rises pressure goes down.
Maximum Auxiliary Circuit - Secondary - Flow at Pump:
6.6 gal/min / 25 l/min
Maximum Auxiliary Circuit - Primary - Pressure at Pump:
3553 psi / 24500 kPa
Maximum Auxiliary Circuit - Primary - Flow at Pump:
15.9 gal/min / 60 l/min
Maximum Auxiliary Circuit - Secondary - Pressure at Pump:
3553 psi / 24500 kPa

Swing System

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

Blade

Width:
70 in / 1780 mm
Height:
13 in / 325 mm
Dig Depth:
19 in / 470 mm
Lift Height:
16 in / 400 mm

Service Refill Capacities

Cooling System:
1.5 gal (US) / 5.5 l
Engine Oil:
1.8 gal (US) / 7 l
Hydraulic Tank:
11.2 gal (US) / 42.3 l
Fuel Tank:
12.2 gal (US) / 46 l
Hydraulic System:
17.2 gal (US) / 65 l

Operating Specifications

Maximum Dig Depth:
125 in / 3180 mm

Travel System

Ground Pressure:
4.6 psi / 31.7 kPa

Engine

Rated Net Power - ISO 9249:
23.5 HP / 17.5 kW
Net Power - ISO 9249:
23.5 HP / 17.5 kW
Note:
Cat C1.7 engine meets U.S. EPA Tier 4 Final/EU Stage IIIB emission standards.

Weights

Operating Weight - With Canopy:
7803 lb / 3539 kg
Note:
Weight includes rubber tracks, bucket, operator, full fuel and auxiliary lines.

Hydraulic System

Digging Force - Bucket:
7419 lbf / 33 kN