303.5E2 CR Hydraulic Excavator

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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

Net Power
23.5 HP
Engine Model
Cat® C1.7
Gross Power
24.8 HP
Bore
3.4 in
Displacement
104 in³
Stroke
3.6 in
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.
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 Specifications

Maximum Dig Depth
125 in

Swing System

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

Blade

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

Service Refill Capacities

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

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

Hydraulic System

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