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: 104.3 in
power: 23.6 hp
Operating weight: 7,817 lb

Side

Front

Tail swing radius: 30.5 in
Max blade height: 15.2 in
Max blade depth: 21.1 in
Overall height (to top of boom): 63.0 in
Overall height (to top of cab): 97.6 in
Swing bearing height: 22.4 in
Track length: 81.5 in
Overall length: 177.6 in
Shoe width: 11.8 in
Width of crawler: 61.0 in
Ground clearance (minimum): 12.2 in

Dimensions

Tail swing radius, light counterweight: 33.3 in
Tail swing radius, extra counterweight: 35.0 in
Overall height (to top of boom), long stick: 75.6 in
Overall length, long stick: 179.5 in

Performance

1Max digging depth: 104.3 in
Max digging depth, long stick: 116.1 in
2Max vertical wall digging depth (Vertical wall, standard stick): 71.7 in
Max vertical wall digging depth, long stick: 81.5 in
3Max reach at ground level: 190.2 in
Max reach at ground level, long stick: 201.2 in
4Max digging reach (Maximum reach, standard stick): 196.1 in
Max digging reach, long stick: 206.3 in
5Max digging height: 177.6 in
Max digging height, long stick: 183.1 in
6Max dumping height (Maximum dump clearance, standard stick): 124.8 in
Max dumping height, long stick: 130.3 in
7Boom-in reach (Boom in reach, standard stick): 68.9 in
Boom-in reach, long stick: 75.2 in
16Boom swing offset, right (Boom swing right (plan view)): 34.3 in
17Boom swing offset, left (Boom swing left (plan view)): 25.2 in
Boom swing, right: 50°
Boom swing, left: 75°
Bucket digging force: 6,385 lbf
Arm digging force (Stick digging force, standard stick): 3,732 lbf
Arm digging force, long stick (Stick digging force, long stick): 3,327 lbf
Swing speed (Machine swing speed): 9.0 rpm

Weight

Operating weight: 7,817 lb
Operating weight, cab (minimum): 6,924 lb
Operating weight, canopy (minimum): 6,670 lb
Operating weight, canopy (maximum): 7,552 lb
EU CE plate weight, canopy: 6,791 lb
EU CE plate weight, cab: 7,012 lb
Weight increase, cab: 254 lb
Weight increase, counterweight (light): 221 lb
Weight increase, counterweight (extra): 551 lb
Weight increase, long stick: 55 lb
Weight increase, steel tracks: 276 lb

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): 23.6 hp
Gross power (Engine power, ISO 14396): 24.7 hp
Bore: 3.0 in
Stroke: 3.2 in
Displacement: 69.0 in3

Hydraulics

Pump flow: 26 gal/min
Max pressure (Operating pressure, equipment): 3,553 psi
Operating pressure, travel: 3,553 psi
Operating pressure, swing: 2,553 psi
Auxiliary circuit flow, primary: 17 gal/min
Auxiliary circuit flow, secondary: 7.0 gal/min

Travel

Travel speed (high): 2.8 mph
Travel speed (low): 1.6 mph
Max traction force, high speed: 3,305 lbf
Max traction force, low speed: 7,059 lbf
Ground pressure, minimum weight: 27.6 kPa
Ground pressure, maximum weight: 32.3 kPa
Gradeability (maximum): 30°

Blade

Blade width: 61.0 in
Blade height: 13.8 in

Boom and stick

Boom length (One-piece boom): 86.6 in
21Stick length: 49.6 in
Stick length, long stick: 61.4 in

Service capacities

Fuel tank: 11.9 gal
Cooling system: 1.1 gal
Engine oil: 1.1 gal
Hydraulic tank: 4.8 gal
Hydraulic system: 9.2 gal
Final drive (each): 0.2 US gal

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