Big EOFY Savings on Cat Compact machines until 30 June 2026. T&Cs apply. View Promotion

Big EOFY Savings on Cat Compact machines until 30 June 2026. T&Cs apply. View Promotion

303 CR Mini Hydraulic Excavator

303 CR

Mini Excavators
The Cat® 303 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
C1.1 Turbo
Net Power - 2,400 rpm - ISO 9249, 80/1269/EEC
23.6 hp/17.6 kW
Net Power - ISO 9249
24.7 hp/18.4 kW

Key Features

Specifications

Metric | Imperial
Engine Expand Collapse
Net Power
23.6 hp 17.6 kW
Engine Model
C1.1 Turbo
Net Power - 2,400 rpm - ISO 9249, 80/1269/EEC
23.6 hp 17.6 kW
Net Power - ISO 9249
24.7 hp 18.4 kW
Bore
3 in 77 mm
Stroke
3.2 in 81 mm
Displacement
69 in³ 1.1 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 2,400 rpm and the engine is installed with the factory configured fan, air intake system, exhaust system and alternator with a minimum alternator load.
Operating Weight
7817 lb 3545 kg
Minimum Operating Weight with Canopy*
6670 lb 3025 kg
Maximum Operating Weight with Canopy**
7552 lb 3425 kg
Minimum Operating Weight with Cab*
6924 lb 3140 kg
Maximum Operating Weight with Cab**
7817 lb 3545 kg
EU: CE Plate Weight with Canopy***
6791 lb 3080 kg
EU: CE Plate Weight with Cab***
7012 lb 3180 kg
Note (1)
Net power advertised is the power available at the flywheel when the engine is at the rated speed of 2,400 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.
Cab
254 lb 115 kg
Counterweight
221 lb 100 kg
Extra Counterweight
551 lb 250 kg
Long Stick
55 lb 25 kg
Steel Tracks
276 lb 125 kg
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
3305 lbf 14.7 kN
Maximum Traction Force - Low Speed
7059 lbf 31.4 kN
Ground Pressure - Minimum Weight
4 psi 27.6 kPa
Ground Pressure - Maximum Weight
4.7 psi 32.3 kPa
Gradeability - Maximum
30 degrees
Cooling System
1.1 gal (US) 4 l
Engine Oil
1.1 gal (US) 4 l
Fuel Tank
11.9 gal (US) 45 l
Hydraulic Tank
4.8 gal (US) 18 l
Hydraulic System
9.2 gal (US) 35 l
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
2553 psi 176 bar
Auxiliary Circuit - Primary - Flow
17 gpm 65 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
3732 lbf 16.6 kN
Digging Force - Stick - Long
3327 lbf 14.8 kN
Digging Force - Bucket
6385 lbf 28.4 kN
Note
Advertised power is tested per the specified standard in effect at the time of manufacture.
Machine Swing Speed
9 r/min 9 r/min
Boom Swing - Left
75 ° 75 °
Boom Swing - Right
50 ° 50 °
Width
61 in 1550 mm
Height
13.8 in 350 mm
Roll Over Protective Structure (ROPS)
ISO 12117-2:2008
Tip Over Protective Structure (TOPS)
ISO 12117:1997
Top Guard
ISO 10262:1998 (Level I)
Dig Depth
104.3 in 2650 mm
Vertical Wall
71.7 in 1820 mm
Maximum Reach - Ground Level
190.2 in 4830 mm
Maximum Reach
196.1 in 4980 mm
Maximum Dig Height
177.6 in 4510 mm
Maximum Dump Clearance
124.8 in 3170 mm
Boom In Reach
68.9 in 1750 mm
Tail Swing without Counterweight
30.5 in 775 mm
Tail Swing with Extra Counterweight
35 in 890 mm
Maximum Blade Depth
21.1 in 535 mm
Maximum Blade Height
15.2 in 385 mm
Boom Height - Shipping Position
63 in 1600 mm
O/A Shipping Height
97.6 in 2480 mm
Swing Bearing - Height
22.4 in 570 mm
O/A Undercarriage Length
81.5 in 2070 mm
Overall Shipping Length*
177.6 in 4510 mm
Boom Swing - Right
50 ° 50 °
Boom Swing - Left
75 ° 75 °
Track Belt/Shoe Width
11.8 in 300 mm
Track Width
61 in 1550 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.
Dig Depth
104.3 in 2650 mm
Vertical Wall
71.7 in 1820 mm
Maximum Reach - Ground Level
190.2 in 4830 mm
Maximum Reach
196.1 in 4980 mm
Maximum Dig Height
177.6 in 4510 mm
Maximum Dump Clearance
124.8 in 3170 mm
Boom In Reach
68.9 in 1750 mm
Tail Swing without Counterweight
30.5 in 775 mm
Tail Swing - with Extra Counterweight
35 in 890 mm
Maximum Blade Depth
21.1 in 535 mm
Maximum Blade Height
15.2 in 385 mm
Boom Height - Shipping Position
63 in 1600 mm
O/A Shipping Height
97.6 in 2480 mm
Swing Bearing - Height
22.4 in 570 mm
O/A Undercarriage Length
81.5 in 2070 mm
Overall Shipping Length*
177.6 in 4510 mm
Boom Swing - Right
50 ° 50 °
Boom Swing - Left
75 ° 75 °
Track Belt/Shoe Width
11.8 in 300 mm
Track Width
61 in 1550 mm
Stick Length
49.6 in 1260 mm
Minimum Ground Clearance Below Undercarriage
12.2 in 310 mm
Note
Advertised power is tested per the specified standard in effect at the time of manufacture.
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).
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.
Recyclability
95%

Equipment

Compatible Attachments

Impulse Force
3596.94 lb/16 kN
Impact Frequency
2200 bpm
Impulse Force
6294.65 lb/28 kN
Impact Frequency
2200 bpm
Length
30.4 in/771 mm
Stored Height
11.5 in/291 mm
Width
11.8 in/300 mm
Capacity
4.9 ft³/140 l
Machine Class
2 Ton Mini Excavators
Weight
291 lb/132 kg
Machine Class
3-4 Ton Mini Excavator
Weight
264.6 lb/120 kg
Machine Class
3-4 Ton Mini Excavators
Weight
299.8 lb/136 kg
Shank Length
19.3 in/490 mm
Weight
99.2 lb/45 kg
Width
36 in/914 mm
Capacity
7.1 ft³/199.89 l
Width
18 in/457 mm
Capacity
2.9 ft³/82.09 l
Width
24.4 in/619 mm
Capacity
4.2 ft³/118.9 l
Width
20 in/500 mm
Weight
130.1 lb/59 kg
Width
32 in/800 mm
Weight
158.7 lb/72 kg
Width
12 in/305 mm
Capacity
1.7 ft³/48.09 l
B4s
Operating Weight - With Tool
357.1 lb/162 kg
Energy Class
272.9 ft·lbf/370 J
Operating Weight - With Tool
551.2 lb/250 kg
Energy Class
399.8 ft·lbf/542 J
B2s
Operating Weight - With Tool
257.5 lb/116.8 kg
Energy Class
213.9 ft·lbf/290 J
Weight
90.4 lb/41 kg
Width
9.9 in/252 mm
Weight
81.6 lb/37 kg
Width
10.6 in/269 mm
Width
40 in/1000 mm
Weight
240.1 lb/108.9 kg
Width
55.1 in/1400 mm
Weight
259.2 lb/117.59 kg
Compaction Width
15.7 in/399 mm
Number of Wheels
3
Compaction Width
21.8 in/553 mm
Number of Wheels
4
Compaction Width
10.7 in/271 mm
Number of Wheels
2
Drive Shaft Torque at Maximum Pressure
1699.3 lb/ft/2304 N·m
Drive Method
Gerotor Motor - Direct Drive
Drive Shaft Torque at Maximum Pressure
3038.8 lb/ft/4120 N·m
Drive Method
Gerotor Motor - Single Planetary Reduction

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