Caterpillarmini hydraulic excavator
Caterpillar 303.5C CR
Specifications · fluids and capacities · attachment guidance
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Caterpillar 303.5C CR specifications
Engine
| Bore | 88 mm |
| Stroke | 103 mm |
| Gross Power | 30.2 kW (40.5 hp) |
| Net Power | 29 kW (39 hp) |
Weights
| Operating Weight | 3790 kg (8356 lb) |
| Operating Weight - With Cab | 3910 kg (8620 lb) |
Dimensions
| Transport Width | 1780 mm (5.84 ft) |
| Track Shoe Width | 300 mm (0.98 ft) |
| Track Gauge | 1480 mm (4.86 ft) |
Performance
| Max Dump Height - Standard Stick | 3570 mm |
| Max Dump Height - Long Stick | 3670 mm (12 ft) |
| Max Cutting Height - Standard Stick | 5020 mm (16.47 ft) |
| Max Cutting Height - Long Stick | 5110 mm (16.77 ft) |
| Travel Speed - High | 4.6 km/h (2.9 mile/h) |
| Travel Speed - Low | 2.6 km/h (1.6 mile/h) |
Service capacities (summary)
| Fuel Tank | 51 l (13.5 gal (US)) |
| Hydraulic System | 65 l (17.2 gal (US)) |
| Hydraulic Tank | 37 l (9.8 gal (US)) |
| Engine Oil | 6 l (1.6 gal (US)) |
| Cooling System | 6 l (1.6 gal (US)) |
Values vary by configuration, region, and serial range — confirm against your machine before planning transport or lifts.
303.5C CR fluids & capacities
| System | Capacity | Recommended fluid |
|---|---|---|
| Cooling system | 6 l (1.6 gal (US)) | |
| Fuel tank | 51 l (13.5 gal (US)) |
Capacities are refill values from factory literature — always fill to the dipstick/sight gauge, not the number.
303.5C CR attachments & work tools
Thumbs/grapples
The standard configuration includes one-way lines for hammers and two-way lines for augers.
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