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303.5 CR
303.5 CR
Mini Excavators
The Cat® 303.5 CR Mini Excavator delivers power and performance in a compact size to help you work in a wide range of applications.
Net Power
23.6 hp/17.6 kW
Engine Model
C1.7
Net Power @ 2,200 rpm - U.S. EPA Tier 4 Final/EU Stage V - ISO 9249/EEC 80/1269
23.6 hp/17.6 kW
Net Power - ISO 9249
24.7 hp/18.4 kW
Key Features
ALL DAY COMFORT
EASY TO OPERATE
STICK STEER TRAVEL MODE
BIG PERFORMANCE IN A COMPACT DESIGN
SAFETY ON THE JOB SITE
SIMPLE SERVICE FOR LESS DOWNTIME
LOWER OPERATING COSTS
SUSTAINABILITY
Specifications
Metric
|
Imperial
Engine
Net Power
23.6 hp
17.6 kW
Engine Model
C1.7
Net Power @ 2,200 rpm - U.S. EPA Tier 4 Final/EU Stage V - ISO 9249/EEC 80/1269
23.6 hp
17.6 kW
Net Power - ISO 9249
24.7 hp
18.4 kW
Bore
3.3 in
84 mm
Stroke
3.9 in
100 mm
Displacement
104 in³
1.7 l
Emissions
Meets U.S. EPA Tier 4 Final and EU Stage V emission standards.
Note
Advertised power is tested per the specified standard in effect at the time of manufacture.
Note (1)
Net power advertised is the power available at the flywheel when the engine is at the rated speed of 2,200 rpm and the engine is installed with the factory configured fan, air intake system, exhaust system and alternator with a minimum alternator load.
Weights
Operating Weight
9239 lb
4190 kg
Minimum Operating Weight with Canopy*
7673 lb
3480 kg
Maximum Operating Weight with Canopy**
8930 lb
4050 kg
Minimum Operating Weight with Cab*
7982 lb
3620 kg
Maximum Operating Weight with Cab**
9239 lb
4190 kg
EU: CE Plate Weight with Canopy***
7784 lb
3530 kg
EU: CE Plate Weight with Cab***
8004 lb
3630 kg
Note (1)
Net power advertised is the power available at the flywheel when the engine is at the rated speed of 2,200 rpm and the engine is installed with the factory configured fan, air intake system, exhaust system and alternator with a minimum alternator load.
Note (2)
**Maximum Weight is based on steel tracks, operator, full fuel tank, long stick, blade, no 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.
Weight Increase from Minimum Configuration
Cab
309 lb
140 kg
Counterweight
221 lb
100 kg
Extra Counterweight
551 lb
250 kg
Long Stick
44 lb
20 kg
Steel Tracks
287 lb
130 kg
Angle Blade
353 lb
160 kg
Travel System
Travel Speed - High
2.8 mile/h
4.5 km/h
Travel Speed - Low
1.6 mile/h
2.6 km/h
Maximum Traction Force - High Speed
3799 lbf
16.9 kN
Maximum Traction Force - Low Speed
6969 lbf
31 kN
Ground Pressure - Minimum Weight
4.3 psi
29.6 kPa
Ground Pressure - Maximum Weight
5.2 psi
35.7 kPa
Gradeability - Maximum
30 degrees
Service Refill Capacities
Cooling System
1.8 gal (US)
7 l
Engine Oil
1.6 gal (US)
6 l
Fuel Tank
11.9 gal (US)
45 l
Hydraulic Tank
5.3 gal (US)
20 l
Hydraulic System
11.9 gal (US)
45 l
Hydraulic System
Type
Load Sensing Hydraulics with Variable Displacement Piston Pump
Pump Flow at 2,400 rpm
26 gpm
100 L/min
Operating Pressure - Equipment
3553 psi
245 bar
Operating Pressure - Travel
3553 psi
245 bar
Operating Pressure - Swing
2625 psi
181 bar
Auxiliary Circuit - Primary - Flow
18 gpm
70 L/min
Auxiliary Circuit - Primary - Pressure
3553 psi
245 bar
Auxiliary Circuit - Secondary - Flow
7 gpm
25 L/min
Auxiliary Circuit - Secondary - Pressure
3553 psi
245 bar
Digging Force - Stick - Standard
4249 lbf
18.9 kN
Digging Force - Stick - Long
3799 lbf
16.9 kN
Digging Force - Bucket
7419 lbf
33 kN
Note
Advertised power is tested per the specified standard in effect at the time of manufacture.
Swing System
Machine Swing Speed
9 r/min
9 r/min
Boom Swing - Left
75 °
75 °
Boom Swing - Right
50 °
50 °
Blade
Width
70.1 in
1780 mm
Height
13.8 in
350 mm
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 - Standard Stick
Dig Depth
110.6 in
2810 mm
Vertical Wall
88.6 in
2250 mm
Maximum Reach - Ground Level
202 in
5130 mm
Maximum Reach
207.5 in
5270 mm
Maximum Dig Height
193.7 in
4920 mm
Maximum Dump Clearance
137.4 in
3490 mm
Boom In Reach
69.3 in
1760 mm
Tail Swing without Counterweight
35 in
890 mm
Tail Swing with Extra Counterweight
39.6 in
1005 mm
Maximum Blade Depth
21.1 in
535 mm
Maximum Blade Height
15.2 in
385 mm
Boom Height - Shipping Position
59.8 in
1520 mm
O/A Shipping Height
97.6 in
2480 mm
Swing Bearing - Height
22.2 in
565 mm
O/A Undercarriage Length
87.4 in
2220 mm
Overall Shipping Length*
189 in
4800 mm
Boom Swing - Right
50 °
50 °
Boom Swing - Left
75 °
75 °
Track Belt/Shoe Width
11.8 in
300 mm
Track Width
70.1 in
1780 mm
Minimum Ground Clearance Below Undercarriage
12.2 in
310 mm
Stick Length
49.6 in
1260 mm
Note
Advertised power is tested per the specified standard in effect at the time of manufacture.
Dimensions - Long Stick
Dig Depth
110.6 in
2810 mm
Vertical Wall
88.6 in
2250 mm
Maximum Reach - Ground Level
202 in
5130 mm
Maximum Reach
207.5 in
5270 mm
Maximum Dig Height
193.7 in
4920 mm
Maximum Dump Clearance
137.4 in
3490 mm
Boom In Reach
69.3 in
1760 mm
Tail Swing without Counterweight
35 in
890 mm
Tail Swing - with Extra Counterweight
39.6 in
1005 mm
Maximum Blade Depth
21.1 in
535 mm
Maximum Blade Height
15.2 in
385 mm
Boom Height - Shipping Position
59.8 in
1520 mm
O/A Shipping Height
97.6 in
2480 mm
Swing Bearing - Height
22.2 in
565 mm
O/A Undercarriage Length
87.4 in
2220 mm
Overall Shipping Length*
189 in
4800 mm
Boom Swing - Right
50 °
50 °
Boom Swing - Left
75 °
75 °
Track Belt/Shoe Width
11.8 in
300 mm
Track Width
70.1 in
1780 mm
Minimum Ground Clearance Below Undercarriage
12.2 in
310 mm
Stick Length
49.6 in
1260 mm
Note
Advertised power is tested per the specified standard in effect at the time of manufacture.
Air Conditioning System
Air Conditioning
The air conditioning system on this machine contains the fluorinated greenhouse gas refrigerant R134a or R1234yf (Europe) (Global Warming Potential = 1430). See label or instruction manual for gas refrigerant identification. The system contains 0.75 kg (1.65 lb), 0.90 kg (1.98 lb) or 1.0 kg (2.20 lb) of refrigerant which has a CO2 equivalent of 1.430 metric tonnes (1.576 tons) for R134a and 0.001 tonnes (0.001 tons) for R1234yf (Europe).
Sound
Operator Sound Pressure (ISO 6396:2008)
78 dB(A)
78 dB(A)
Average Exterior Sound Pressure (ISO 6395:2008)
94 dB(A)
94 dB(A)
Note
Advertised power is tested per the specified standard in effect at the time of manufacture.
Sustainability
Recyclability
95%
Equipment
Standard Equipment
Optional Equipment
Downloads
303.5 CR Small Product Brochure (Global except China and Japan)
Cat Mini Hydraulic Excavators Product Line Brochure (North America)
Cat Mini Hydraulic Excavators Product Line Brochure (Europe)
Options And Accessories Kit Guide for Mini Hydraulic Excavators
Cat Attachments for Mini Excavators Brochure
Attachment Compatibility Guide for Mini Excavators