Caterpillar 303 specifications
Caterpillar 303 CR Engine
| Bore | 3.1 in (8 cm) |
| Displacement | 80.5 cu in (0 m) |
| Engine Model | S3L2 |
| Gross Power | 27.1 hp (20 kw) |
| Net Power | 26.1 hp (19 kw) |
| Stroke | 3.7 in (9 cm) |
Caterpillar 303 CR Hydraulic System
| Auxiliary Circuit – Primary | 13.15 gal/min (50 l/min) |
| Auxiliary Circuit – Primary (245 bar/3,553 psi) | 13.15 gal/min (50 l/min) |
| Digging Force – Bucket | 6000 lbs (2,722 kg) |
| Digging Force – Stick – Long | 3484 lbs (1,580 kg) |
| Digging Force – Stick – Standard | 3822 lbs (1,734 kg) |
| Operating Pressure – Equipment | 3550 psi |
| Operating Pressure – Swing | 3550 psi |
| Operating Pressure – Travel | 3550 psi |
| Pump – Gear (Single) | 6.2 gal/min (23 l/min) |
| Pump – Gear (Tandem) | 8.7 gal/min (33 l/min) |
Caterpillar 303 CR Operating Specifications
| Operating Weight | 7403 lbs (3,358 kg) |
Caterpillar 303 CR Service Refill Capacities
| Cooling System TAG | 1 gal (4 l) |
| Engine Oil | 1.5 gal (6 l) |
| Fuel Tank | 10.9 gal (41 l) |
| Hydraulic System | 18.2 gal (69 l) |
| Hydraulic Tank | 7.8 gal (30 l) |
Caterpillar 303 CR Swing System
| Boom Swing – Left – With Stop | 65 ° |
| Boom Swing – Left – Without Stop | 90 ° |
| Boom Swing – Right | 50 ° |
| Machine Swing Speed | 9.6 rpm |
| Swing System Type | Hydraulic Motor Driven |
Caterpillar 303 CR Travel System
| Travel Speed – High | 3 mph (5 kph) |
| Travel Speed – Low | 1.7 mph (3 kph) |
Caterpillar 303 CR Weights
| Operating Weight – With Cab | 7524 lbs (3,413 kg) |
Caterpillar 303 CR Blades
| Blade Lift Height | 16 in (41 cm) |
| Blade Width | 5.1 ft (2 m) |
| Dig Depth | 15 in (38 cm) |
Caterpillar 303 CR Dimensions
| Center Ground Clearance | 1.1 ft (0 m) |
| Digging Depth | 9 ft (3 m) |
| Digging Reach | 9 ft (3 m) |
| Height – Over Cab | 8.2 ft (3 m) |
| Height – Over Canopy | 8.2 ft (3 m) |
| Maximum Cutting Height – Long Stick | 15.5 ft (5 m) |
| Maximum Cutting Height – Standard Stick | 15.3 ft (5 m) |
| Maximum Digging Depth – Long Stick | 10.2 ft (3 m) |
| Maximum Digging Depth – Standard Stick | 9.9 ft (3 m) |
| Maximum Dump Height – Long Stick | 10.8 ft (3 m) |
| Maximum Dump Height – Standard Stick | 10.4 ft (3 m) |
| Maximum Horizontal Reach – Long Stick | 18 ft (5 m) |
| Maximum Horizontal Reach – Standard Stick | 17.3 ft (5 m) |
| Maximum Reach – Ground Level – Long Stick | 16.1 ft (5 m) |
| Maximum Reach – Ground Level – Standard Stick | 17.3 ft (5 m) |
| Maximum Vertical Dig Depth – Long Stick | 8.2 ft (3 m) |
| Maximum Vertical Dig Depth – Standard Stick | 8.4 ft (3 m) |
| Shipping Length | 15.4 ft (5 m) |
| Swing Radius – Rear | 3 ft (1 m) |
| Track Gauge | 4.1 ft (1 m) |
| Track Shoe Width | 1 ft (0 m) |
| Width – Over Track | 5.1 ft (2 m) |
| Width – Upper Structure | 5.4 ft (2 m) |
Caterpillar 303 CR Electrical System
| Electrical System Type | Twelve-volt system |