Mini Excavators
Cat 303.5 CR
Operating Weight
3,508kg
Power
24.8kW (33.7hp)
Width
1,780mm

Featuring a large integrated counterweight and excellent stability while maintaining a compact radius design, the Cat 303.5 mini excavator delivers high performance in a compact size.
Specifications
Blade
Height
350mm
Width
1780mm
Certification - Cab and Canopy
Roll Over Protective Structure (ROPS)
ISO 12117-2:2008
Tip Over Protective Structure (TOPS)
ISO 12117:1997
Top Guard
ISO 10262:1998 (Level I)
Dimensions (Approximate) - Long Stick
Tail Swing with Extra Counterweight
1005mm
Dimensions (Approximate) - Standard Stick
Tail Swing with Extra Counterweight
1005mm
Dimensions - Long Stick
Boom Height - Shipping Position
1750mm
Boom In Reach
1860mm
Boom Swing - Left
25.2°
Boom Swing - Right
870mm
Dig Depth
3110mm
Ground Clearance
310mm
Maximum Blade Depth
535mm
Maximum Blade Height
385mm
Maximum Dig Height
5020mm
Maximum Dump Clearance
3600mm
Maximum Reach
5510mm
Maximum Reach - Ground Level
5380mm
Note
*Overall Shipping Length depends on blade position during shipment.
O/A Shipping Height
2480mm
O/A Track Width
1780mm
O/A Undercarriage Length
2220mm
Overall Shipping Length*
4850mm
Stick Length
1560mm
Swing Bearing - Height
565mm
Tail Swing with Counterweight
960mm
Tail Swing without Counterweight
890mm
Track Belt/Shoe Width
300mm
Vertical Wall
2390mm
Dimensions - Standard Stick
Boom Height - Shipping Position
1520mm
Boom In Reach
1760mm
Boom Swing - Left
640mm
Boom Swing - Right
870mm
Dig Depth
2810mm
Ground Clearance
310mm
Maximum Blade Depth
535mm
Maximum Blade Height
385mm
Maximum Dig Height
4920mm
Maximum Dump Clearance
3490mm
Maximum Reach
5270mm
Maximum Reach - Ground Level
5130mm
Note
*Overall Shipping Length depends on blade position during shipment.
O/A Shipping Height
2480mm
O/A Undercarriage Length
2220mm
Overall Shipping Length*
4800mm
Stick Length
1260mm
Swing Bearing - Height
565mm
Tail Swing with Counterweight
960mm
Tail Swing with Extra Counterweight
1005mm
Tail Swing without Counterweight
890mm
Track Belt/Shoe Width
300mm
Vertical Wall
2250mm
Engine
Bore
84mm
Displacement
1.7l
Emissions
Meets U.S. EPA Tier 4 Final and EU Stage V emission standards.
Engine Model
C1.7
Gross Power - 2,400 rpm - SAE J1995
18.4kW
Net Power
17.6kW
Net Power @ 2,200 rpm - U.S. EPA Tier 4 Final/EU Stage V - ISO 9249/EEC 80/1269
17.6kW
Note
Net power is tested per ISO 9249 and 80/1269/EEC.
Note (2)
Net power advertised is the power available at the flywheel when the engine is at rated speed and rated power when the engine is installed with the factory configured fan, air intake system, exhaust system, and alternator with a minimum alternator load.
Stroke
100mm
Hydraulic System
Auxiliary Circuit - Primary - Flow
70l/min
Auxiliary Circuit - Primary - Pressure
245bar
Auxiliary Circuit - Secondary - Flow
25l/min
Auxiliary Circuit - Secondary - Pressure
245bar
Digging Force - Bucket
33kN
Digging Force - Stick - Long
16.9kN
Digging Force - Stick - Standard
18.9kN
Note
*Flow and pressure are not combinable. Under load, as flow rises pressure goes down.
Operating Pressure - Equipment
245bar
Operating Pressure - Swing
181bar
Operating Pressure - Travel
245bar
Pump Flow at 2,400 rpm
100l/min
Type
Load Sensing Hydraulics with Variable Displacement Piston Pump
Service Refill Capacities
Cooling System
7l
Engine Oil
6l
Fuel Tank
45l
Hydraulic System
45l
Hydraulic Tank
20l
Sound
Average Exterior Sound Pressure (ISO 6395:2008)
94dB(A)
Note
European Union Directive ‚ "2000/14/EC"
Operator Sound Pressure (ISO 6396:2008)
78dB(A)
Swing System
Boom Swing - Left
75°
Boom Swing - Right
50°
Machine Swing Speed
9r/min
Travel System
Gradeability - Maximum
30 degrees
Ground Pressure - Maximum Weight
35.7kPa
Ground Pressure - Minimum Weight
29.6kPa
Maximum Traction Force - High Speed
16.9kN
Maximum Traction Force - Low Speed
31kN
Travel Speed - High
4.5km/h
Travel Speed - Low
2.6km/h
Weight Increase from Minimum Configuration
Angle Blade
160kg
Cab
140kg
Counterweight
100kg
Extra Counterweight
250kg
Long Stick
20kg
Steel Tracks
130kg
Weights
EU: CE Plate Weight with Cab***
3630kg
EU: CE Plate Weight with Canopy***
3530kg
Maximum Operating Weight with Cab**
4190kg
Maximum Operating Weight with Canopy**
4050kg
Minimum Operating Weight with Cab*
3620kg
Minimum Operating Weight with Canopy*
3480kg
Note (1)
* Minimum Weight is based on fixed rubber tracks, operator, full fuel tank, standard stick, blade, bucket and no extra counterweight.
Note (2)
**Maximum Weight is based on steel tracks, operator, full fuel tank, long stick, blade, bucket and extra counterweight.
Note (3)
***CE Plate Weight is based on the most common EU configuration. Includes 75 kg (165 lb) operator and full fuel tank and excludes bucket.
Operating Weight
4190kg
GALLERY

How does the 303.5 CR Compare?
-
Excavators Cat 303.5 CR
Operating Weight3,508kgPower24.8kW (33.7hp)Width1,780mmSELECTED MODEL -
Excavators Cat 320 GC
Operating Weight20,500kgPower108kW (146.8hp)Width2,800mm -
Excavators Cat 330 - Tier 4F/ EU Stage V
Operating Weight29,000kgPower205kW (278.7hp)Width2,990mm