| The Cat 303.5D CR delivers high performance in a compact radius design to help you work in the tightest applications. |
| Engine | |
| Engine model | Mitsubishi S3Q2 |
| Net power | 30 hp |
| Gross power | 31 hp |
| Weights | |
| Operating weight | 7800 lb |
| Operating weight with cab | 8160 lb |
| Dimensions | |
| Max digging depth - standard stick | 9.5 ft |
| Max reach ground level - standard stick | 16.7 ft |
| Engine Dimensions | |
| Bore | 3.5 in |
| Stroke | 4.1 in |
| Displacement | 116 in3 |
| Travel System | |
| Travel speed - high | 2.9 mph |
| Travel speed - low | 1.7 mph |
| Hydraulic System | |
| Operating pressures - equipment | 3553 psi |
| Operating pressure - travel | 3553 psi |
| Operating pressure - swing | 2495 psi |
| Digging forces - stick (standard) | 4250 lb |
| Digging force - stick (long) | 3799 lb |
| Digging force - bucket | 7420 lb |
| Swing System | |
| Machine swing speed | 9 RPM |
| Boom swing - left (without stop) | 80 Degrees |
| Boom swing - left (with stop) | 55 Degrees |
| Boom Swing - right | 50 Degrees |
| Blade | |
| Width | 70 in |
| Height | 12.8 in |
| Dig depth | 18.5 in |
| Lift height | 15.8 in |
| Service Refill Capacities | |
| Cooling system | 1.4 gal |
| Engine oil | 1.5 gal |
| Fuel tank | 11.9 gal |
| Hydraulic tank | 8.7 gal |
| Hydraulic system | 17.2 gal |
| 1-way and 2-way (combined function) auxiliary hydraulic lines |
| Adjustable wrist rests |
| Alternator |
| Automatic engine idle |
| Automatic swing park brake |
| Automatic two speed travel |
| Auxiliary line quick disconnects |
| Boom cylinder guard |
| Cab mounted work light |
| Canopy with FOPS ISO 10262 (Level 1) and Tip-Over Protection (TOPS) ISO 12117 |
| Coat hook |
| Cup holder |
| Control pattern changer (not available in Europe) |
| Dozer blade with float function |
| Floor mat |
| Foot travel pedals |
| Gauges or indicators for fuel level engine coolant temperature, hour meter, engine oil pressure, air cleaner, alternator and glow plugs, service interval |
| Horn |
| Hydraulic oil cooler |
| Lifting eye on bucket linkage (optional in Europe) |
| Lockable storage box |
| Low maintenance linkage pin joints |
| Maintenance free battery |
| Rubber track |
| Seatbelt, 76 mm (3 in) wide, retractable (optional in Europe) |
| Standard stick |
| Suspension seat, vinyl covered |
| "Thumb ready" stick (standard equipment in all regions except Europe) |
| Travel alarm (optional in Europe) |
| Air conditioning |
| Angle dozer blade with float function |
| Beacon socket for canopy machines |
| Boom check valve (Europe only) |
| Boom mounted light |
| Cab, radio ready with FOPS ISO 10262 (Level 1), Tip-Over Protection (TOPS) ISO 12117, heater/defroster, interior light and windshield wiper/washer |
| Ecology drain valve for hydraulic tank |
| Ecology drain valve for engine oil |
| Fan and sun blind installation |
| Front screen guard for cab and canopy |
| High back suspension seat, fabric covered |
| Hydraulic quick coupler lines |
| Long stick |
| Mechanical quick coupler |
| Mirrors for cab and canopy |
| Secondary auxiliary hydraulic lines |
| Steel track and steel track with rubber pads |
| Air conditioning |
| Angle dozer blade with float function |
| Beacon socket for canopy machines |
| Boom check valve (Europe only) |
| Boom mounted light |
| Cab, radio ready with FOPS ISO 10262 (Level 1), Tip-Over Protection (TOPS) ISO 12117, heater/defroster, interior light and windshield wiper/washer |
| Ecology drain valve for hydraulic tank |
| Ecology drain valve for engine oil |
| Fan and sun blind installation |
| Front screen guard for cab and canopy |
| High back suspension seat, fabric covered |
| Hydraulic quick coupler lines |
| Long stick |
| Mechanical quick coupler |
| Mirrors for cab and canopy |
| Secondary auxiliary hydraulic lines |
| Steel track and steel track with rubber pads |