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Caterpillar 303 CR Mini Excavator - Versatile Supplier for Residential Construction in China | Reliable Factory Solutions
Benefits
Key Features
- Compact zero-tail-swing design for outstanding performance in confined job sites
- Powerful hydraulic system delivering smooth operation and strong digging forces
- Stable undercarriage for enhanced balance and safety on varied terrain
- Comfortable, operator-friendly cabin with intuitive controls
- Wide attachment compatibility: buckets, breakers, grapples and augers
- Fuel-efficient engine for lower daily running cost and longer working hours
- Simple maintenance design to reduce downtime and service cost
- Durable structure built for long-term use in construction, landscaping and farm applications
- Excellent mobility for easy transportation between job sites
- Genuine Cat quality with reliable performance for global construction demands
Features At A Glance
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
| Engine | Net Power | 17.6 kW |
| Engine Model | C1.1 Turbo | |
| Net Power - 2,400 rpm - ISO 9249, 80/1269/EEC | 17.6 kW | |
| Net Power - ISO 9249 | 18.4 kW | |
| Bore | 77 mm | |
| Stroke | 81 mm | |
| Displacement | 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. | |
| Weights | Operating Weight | 3545 kg |
| Minimum Operating Weight with Canopy* | 3025 kg | |
| Maximum Operating Weight with Canopy** | 3425 kg | |
| Minimum Operating Weight with Cab* | 3140 kg | |
| Maximum Operating Weight with Cab** | 3545 kg | |
| EU: CE Plate Weight with Canopy*** | 3080 kg | |
| EU: CE Plate Weight with Cab*** | 3180 kg | |
| Note (1) | *Minimum Weight is based on fixed rubber tracks, operator, full fuel tank, standard stick, blade, no bucket and extra counterweight. | |
| 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. | |
| Dimensions - Long Stick | Dig Depth | 2950 mm |
| Vertical Wall | 2070 mm | |
| Maximum Reach - Ground Level | 5110 mm | |
| Maximum Reach | 5240 mm | |
| Maximum Dig Height | 4650 mm | |
| Maximum Dump Clearance | 3310 mm | |
| Boom In Reach | 1910 mm | |
| Tail Swing without Counterweight | 775 mm | |
| Tail Swing - with Extra Counterweight | 890 mm | |
| Maximum Blade Depth | 535 mm | |
| Maximum Blade Height | 385 mm | |
| Boom Height - Shipping Position | 1920 mm | |
| O/A Shipping Height | 2480 mm | |
| Swing Bearing - Height | 570 mm | |
| O/A Undercarriage Length | 2070 mm | |
| Overall Shipping Length* | 4560 mm | |
| Boom Swing - Right | 870 mm | |
| Boom Swing - Left | 640 mm | |
| Track Belt/Shoe Width | 300 mm | |
| Track Width | 1550 mm | |
| Stick Length | 1560 mm | |
| Minimum Ground Clearance Below Undercarriage | 310 mm | |
| Note | *Overall Shipping Length depends on blade position during shipment. | |
| Weight Increase from Minimum Configuration | Cab | 115 kg |
| Counterweight | 100 kg | |
| Extra Counterweight | 250 kg | |
| Long Stick | 25 kg | |
| Steel Tracks | 125 kg | |
| Travel System | Travel Speed - High | 4.5 km/h |
| Travel Speed - Low | 2.6 km/h | |
| Maximum Traction Force - High Speed | 14.7 kN | |
| Maximum Traction Force - Low Speed | 31.4 kN | |
| Ground Pressure - Minimum Weight | 27.6 kPa | |
| Ground Pressure - Maximum Weight | 32.3 kPa | |
| Gradeability - Maximum | 30 degrees | |
| Service Refill Capacities | Cooling System | 4 l |
| Engine Oil | 4 l | |
| Fuel Tank | 45 l | |
| Hydraulic Tank | 18 l | |
| Hydraulic System | 35 l | |
| Hydraulic System | Type | Load Sensing Hydraulics with Variable Displacement Piston Pump |
| Pump Flow at 2,400 rpm | 100 L/min | |
| Operating Pressure - Equipment | 245 bar | |
| Operating Pressure - Travel | 245 bar | |
| Operating Pressure - Swing | 176 bar | |
| Auxiliary Circuit - Primary - Flow | 65 L/min | |
| Auxiliary Circuit - Primary - Pressure | 245 bar | |
| Auxiliary Circuit - Secondary - Flow | 25 L/min | |
| Auxiliary Circuit - Secondary - Pressure | 245 bar | |
| Digging Force - Stick - Standard | 16.6 kN | |
| Digging Force - Stick - Long | 14.8 kN | |
| Digging Force - Bucket | 28.4 kN | |
| Note | * Flow and pressure are not combinable. Under load, as flow rises pressure goes down. | |
| Swing System | Machine Swing Speed | 9 r/min |
| Boom Swing - Left | 75 ° | |
| Boom Swing - Right | 50 ° | |
| Blade | Width | 1550 mm |
| Height | 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 | 2650 mm |
| Vertical Wall | 1820 mm | |
| Maximum Reach - Ground Level | 4830 mm | |
| Maximum Reach | 4980 mm | |
| Maximum Dig Height | 4510 mm | |
| Maximum Dump Clearance | 3170 mm | |
| Boom In Reach | 1750 mm | |
| Tail Swing without Counterweight | 775 mm | |
| Tail Swing with Extra Counterweight | 890 mm | |
| Maximum Blade Depth | 535 mm | |
| Maximum Blade Height | 385 mm | |
| Boom Height - Shipping Position | 1600 mm | |
| O/A Shipping Height | 2480 mm | |
| Swing Bearing - Height | 570 mm | |
| O/A Undercarriage Length | 2070 mm | |
| Overall Shipping Length* | 4510 mm | |
| Boom Swing - Right | 870 mm | |
| Boom Swing - Left | 640 mm | |
| Track Belt/Shoe Width | 300 mm | |
| Minimum Ground Clearance Below Undercarriage | 310 mm | |
| Stick Length | 1260 mm | |
| Note | *Overall Shipping Length depends on blade position during shipment. | |
| 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 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) |
| Average Exterior Sound Pressure (ISO 6395:2008) | 94 dB(A) | |
| Note | European Union Directive "2000/14/EC" | |
| Sustainability | Recyclability | 95% |
Frequently Asked Questions
What is the operating weight of this Cat mini excavator?
The maximum operating weight with cab is 3,545 kg. The minimum operating weight with canopy starts at 3,025 kg, depending on the configuration selected.
What engine does this mini excavator use, and does it meet emission standards?
It is powered by a Cat C1.1 Turbo engine producing 17.6 kW (net power). It fully meets U.S. EPA Tier 4 Final and EU Stage V emission standards.
What attachments are compatible with this mini excavator?
This machine supports a wide range of attachments including buckets, hydraulic breakers, grapples, and augers, thanks to its versatile auxiliary hydraulic circuit with both primary and secondary circuits.
What is the maximum digging depth of this machine?
With the long stick configuration, the maximum dig depth is 2,950 mm. With the standard stick, the dig depth is 2,650 mm.
Is this mini excavator suitable for confined or urban job sites?
Yes. The compact zero-tail-swing design minimizes the tail swing radius (775 mm without counterweight), making it ideal for working in tight urban spaces, narrow trenches, and confined construction zones.
How fuel-efficient is this machine, and what is the fuel tank capacity?
The machine features a fuel-efficient C1.1 Turbo engine designed to lower daily running costs and extend working hours. The fuel tank capacity is 45 litres, supporting extended operation between refills.