Cat 303 CR

Cat 303 CR mini excavator, current build 07A (Cat C1.1 Turbo, U.S. EPA Tier 4 Final / EU Stage V), from Cat's Specalog AEHQ8350-04 (09-2025) for Global excluding China and Japan; Al-Bahar (UAE) does not list the 303 CR, so there is no Gulf sheet and this is the global sheet linked by US Cat dealers; dimensions are for the standard 1260 mm stick unless a row says long stick.

USAGlobal

digging depth: 2.65 m
power: 17.6 kW (23.6 hp)
Operating weight: 3,545 kg

Side

Front

Tail swing radius: 0.775 m
Max blade height: 0.385 m
Max blade depth: 0.535 m
Overall height (to top of boom): 1.6 m
Overall height (to top of cab): 2.48 m
Swing bearing height: 0.57 m
Track length: 2.07 m
Overall length: 4.51 m
Shoe width: 0.3 m
Width of crawler: 1.55 m
Ground clearance (minimum): 0.31 m

Dimensions

Tail swing radius, light counterweight: 0.845 m
Tail swing radius, extra counterweight: 0.89 m
Overall height (to top of boom), long stick: 1.92 m
Overall length, long stick: 4.56 m

Performance

1Max digging depth: 2.65 m
Max digging depth, long stick: 2.95 m
2Max vertical wall digging depth (Vertical wall, standard stick): 1.82 m
Max vertical wall digging depth, long stick: 2.07 m
3Max reach at ground level: 4.83 m
Max reach at ground level, long stick: 5.11 m
4Max digging reach (Maximum reach, standard stick): 4.98 m
Max digging reach, long stick: 5.24 m
5Max digging height: 4.51 m
Max digging height, long stick: 4.65 m
6Max dumping height (Maximum dump clearance, standard stick): 3.17 m
Max dumping height, long stick: 3.31 m
7Boom-in reach (Boom in reach, standard stick): 1.75 m
Boom-in reach, long stick: 1.91 m
16Boom swing offset, right (Boom swing right (plan view)): 0.87 m
17Boom swing offset, left (Boom swing left (plan view)): 0.64 m
Boom swing, right: 50°
Boom swing, left: 75°
Bucket digging force: 28 kN
Arm digging force (Stick digging force, standard stick): 17 kN
Arm digging force, long stick (Stick digging force, long stick): 15 kN
Swing speed (Machine swing speed): 9.0 rpm

Weight

Operating weight: 3,545 kg
Operating weight, cab (minimum): 3,140 kg
Operating weight, canopy (minimum): 3,025 kg
Operating weight, canopy (maximum): 3,425 kg
EU CE plate weight, canopy: 3,080 kg
EU CE plate weight, cab: 3,180 kg
Weight increase, cab: 115 kg
Weight increase, counterweight (light): 100 kg
Weight increase, counterweight (extra): 250 kg
Weight increase, long stick: 25 kg
Weight increase, steel tracks: 125 kg

Engine

Engine model: Cat C1.1 Turbo
Emissions: U.S. EPA Tier 4 Final / EU Stage V
Net power (ISO 9249, 80/1269/EEC, at 2,400 rpm): 17.6 kW (23.6 hp)
Gross power (Engine power, ISO 14396): 18.4 kW (24.7 hp)
Bore: 77 mm
Stroke: 81 mm
Displacement: 1.1 L

Hydraulics

Pump flow: 100 L/min
Max pressure (Operating pressure, equipment): 245 bar
Operating pressure, travel: 245 bar
Operating pressure, swing: 176 bar
Auxiliary circuit flow, primary: 65 L/min
Auxiliary circuit flow, secondary: 25 L/min

Travel

Travel speed (high): 4.5 km/h
Travel speed (low): 2.6 km/h
Max traction force, high speed: 15 kN
Max traction force, low speed: 31 kN
Ground pressure, minimum weight: 27.6 kPa
Ground pressure, maximum weight: 32.3 kPa
Gradeability (maximum): 30°

Blade

Blade width: 1.55 m
Blade height: 0.35 m

Boom and stick

Boom length (One-piece boom): 2.2 m
21Stick length: 1.26 m
Stick length, long stick: 1.56 m

Service capacities

Fuel tank: 45 L
Cooling system: 4 L
Engine oil: 4 L
Hydraulic tank: 18 L
Hydraulic system: 35 L
Final drive (each): 0.6 L

Service intervals

Engine oil and filter (or 6 months): 500 hours
Hydraulic oil: 3,000 hours
Final drive oil (or 12 months): 1,000 hours
Coolant: 12,000 hours