303.5E2 CR Hydraulic Excavator
Overview
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.
Engine
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| Net Power |
23.5HP |
| Engine Model |
Cat® C1.7 |
| Gross Power |
24.8HP |
| Rated Net Power - ISO 9249 |
23.5HP |
| Note |
Cat C1.7 engine meets U.S. EPA Tier 4 Final/EU Stage IIIB emission standards. |
| Net Power - ISO 9249 |
23.5HP |
| Stroke |
3.6in |
| Bore |
3.4in |
| Displacement |
104in³ |
Weights
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| Operating Weight |
8209lb |
| Operating Weight - With Cab |
8209lb |
| Note |
Weight includes rubber tracks, bucket, operator, full fuel and auxiliary lines. |
| Operating Weight - With Canopy |
7803lb |
Operating Specifications
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Swing System
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| Machine Swing Speed |
10r/min |
| Boom Swing - Left - With Stop |
55° |
| Swing - Right |
50° |
| Boom Swing - Left - Without Stop |
80° |
Blade
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| Width |
70in |
| Height |
13in |
| Dig Depth |
19in |
| Lift Height |
16in |
Service Refill Capacities
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| Cooling System |
1.5gal (US) |
| Engine Oil |
1.8gal (US) |
| Hydraulic Tank |
11.2gal (US) |
| Fuel Tank |
12.2gal (US) |
| Hydraulic System |
17.2gal (US) |
Travel System
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| Ground Pressure |
4.6psi |
| Travel Speed - High |
2.9mile/h |
| Maximum Traction Force - Low Speed |
6992lbf |
| Maximum Traction Force - High Speed |
3822lbf |
| Travel Speed - Low |
2mile/h |
Hydraulic System
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| Type |
Load Sensing Hydraulics with Variable Displacement Piston Pump |
| Pump Flow at 2,200 rpm |
26.4gal/min |
| Note |
Flow and pressure are not combinable. Under load, as flow rises pressure goes down. |
| Digging Force - Bucket |
7419lbf |
| Operating Pressure - Travel |
3553psi |
| Operating Pressure - Swing |
3132psi |
| Operating Pressure - Equipment |
3553psi |
| Digging Force - Stick - Standard |
4249lbf |
| Digging Force - Stick - Long |
3799lbf |
| Maximum Auxiliary Circuit - Secondary - Pressure at Pump |
3553psi |
| Maximum Auxiliary Circuit - Primary - Flow at Pump |
15.9gal/min |
| Maximum Auxiliary Circuit - Primary - Pressure at Pump |
3553psi |
| Maximum Auxiliary Circuit - Secondary - Flow at Pump |
6.6gal/min |
Standard Equipment:
Engine
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Cat C1.7 Tier 4 Final diesel engine
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Automatic engine idle
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Automatic engine shut-off
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Automatic two speed travel
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Fuel and water separator
Hydraulic System
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1-way and 2-way (combined function)
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Accumulator
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Automatic swing parking brake
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Auxiliary hydraulic lines
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Adjustable auxiliary relief
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Auxiliary line quick disconnects
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Cat interlock system: hydraulic lockout
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Continuous auxiliary flow
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Ecology drain
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Hydraulic oil cooler
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High definition hydraulics
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Load sensing/flow sharing
Operator Environment
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100% pilot control ergonomic joysticks
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Adjustable armrests
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COMPASS: complete, operation, maintenance, performance and security system
– Multiple languages
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Cup holder
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Hydraulic neutral lockout bar
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Literature holder
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Site reference system: leveling
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Tool storage area
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Travel control pedals with hand levers
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Washable floor mat
Undercarriage
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Dozer blade with float function
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Track, rubber belt, 300 mm (12 in) width
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Tie down eyes on track frame
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Towing eye on base frame
Front Linkage
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200 degree bucket rotation
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Certified lifting eye on bucket linkage
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Front shovel capable
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Thumb ready stick
Electrical
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12 volt electrical system
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60 ampere alternator
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650 CCA maintenance free battery
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Fuse box
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Ignition key start/stop switch
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Slow blow fuse
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Warning horn
Lights And Mirrors
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Boom light with time delay capability
Safety And Security
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Anti-theft system (compass)
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Caterpillar Corporate “One Key” System
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Door locks
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Lockable fuel cap
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Retractable seat belt
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Roll Over Protective Structure (ROPS) (ISO 12117-2)
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Tip Over Protective Structure (TOPS) (ISO 12117)
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Top guard – ISO 10262 (Level 1)
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Travel alarm
Optional Equipment:
Hydraulic System
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Quick coupler lines
Boom lowering check valve
Stick lowering check valve
Secondary auxiliary hydraulic lines
Operator Environment
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Cab:
– Air conditioning
– Heat
– High back suspension seat
– Interior light
– Interlocking front window system
– Radio
– Windshield wiper
Undercarriage
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Power angle blade
Track, double grouser (steel), 300 mm (12 in)
Front Linkage
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Quick coupler: manual or hydraulic
Thumb
Buckets
Full range of performance matched work tools
– Auger, hammer, ripper
Lights And Mirrors
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Light, cab with time delay capability
Mirror, canopy right
Mirror, canopy left
Mirror, cab rear
Safety And Security
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Battery disconnect
Beacon socket
Front wire mesh guard
Rearview camera
Vandal guard
