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303 CR

303 CR

Mini excavator

An extensive line of Cat® mini hydraulic excavators offers the performance to dig in and be productive on every job.


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Specifications
Blade
  • Height
    13.8 in 350 mm
  • Width
    61 in 1550 mm
Certification - Cab and Canopy
  • Roll Over Protective Structure (ROPS)
    ISO 12117-2:2008
  • Top Guard
    ISO 10262:1998 (Level I)
  • Tip Over Protective Structure (TOPS)
    ISO 12117:1997
Dimensions - Long Stick
  • Dig Depth
    116.1 in 2950 mm
  • Boom Height - Shipping Position
    75.6 in 1920 mm
  • Tail Swing with Counterweight
    35 in 890 mm
  • Track Belt/Shoe Width
    11.8 in 300 mm
  • Maximum Reach
    206.3 in 5240 mm
  • Boom In Reach
    74.2 in 1910 mm
  • Boom Swing - Right
    34.3 in 870 mm
  • Tail Swing
    33.3 in 845 mm
  • Maximum Dump Clearance
    130.3 in 3310 mm
  • Ground Clearance
    12.2 in 310 mm
  • O/A Undercarriage Length
    81.5 in 2070 mm
  • O/A Shipping Height
    97.6 in 2480 mm
  • Track Width - Expanded
    61 in 1550 mm
  • Maximum Blade Depth
    21.1 in 535 mm
  • Maximum Reach - Ground Level
    201.2 in 5110 mm
  • Stick Length
    61.4 in 1560 mm
  • Overall Shipping Length*
    179.5 in 4560 mm
  • Maximum Dig Height
    183.1 in 4650 mm
  • Swing Bearing - Height
    22.4 in 570 mm
  • Note
    *Overall Shipping Length depends on blade position during shipment.
  • Tail Swing without Counterweight
    30.5 in 775 mm
  • Maximum Blade Height
    15.2 in 385 mm
  • Boom Swing - Left
    25.2 in 640 mm
  • Vertical Wall
    81.5 in 2070 mm
Dimensions - Standard Stick
  • Maximum Blade Depth
    21.1 in 535 mm
  • Tail Swing without Counterweight
    30.5 in 775 mm
  • Maximum Dig Height
    177.6 in 4510 mm
  • O/A Undercarriage Length
    81.5 in 2070 mm
  • Boom Height - Shipping Position
    63 in 1600 mm
  • Vertical Wall
    71.7 in 1820 mm
  • Overall Shipping Length*
    177.6 in 4510 mm
  • Boom Swing - Left
    25.2 in 640 mm
  • O/A Shipping Height
    97.6 in 2480 mm
  • Track Shoe Width
    61 in 1550 mm
  • Boom Swing - Right
    34.3 in 870 mm
  • Tail Swing with Extra Counterweight
    35 in 890 mm
  • Swing Bearing - Height
    22.4 in 570 mm
  • Tail Swing
    33.3 in 845 mm
  • Maximum Blade Height
    15.2 in 385 mm
  • Dig Depth
    104.3 in 2650 mm
  • Maximum Dump Clearance
    124.8 in 3170 mm
  • Maximum Reach - Ground Level
    190.2 in 4830 mm
  • Maximum Reach
    196.1 in 4980 mm
  • Ground Clearance
    12.2 in 310 mm
  • Track Belt/Shoe Width
    11.8 in 300 mm
  • Boom In Reach
    68.9 in 1750 mm
  • Stick Length
    49.6 in 1260 mm
  • Note
    *Overall Shipping Length depends on blade position during shipment.
Engine
  • Net Power
    23.6 hp 17.6 kW
  • Engine Model
    C1.1 Turbo
  • Bore
    3 in 77 mm
  • Net Power - 2,400 rpm - ISO 9249, 80/1269/EEC
    23.6 hp 17.6 kW
  • Emissions
    Meets U.S. EPA Tier 4 Final and EU Stage V emission standards.
  • Stroke
    3.2 in 81 mm
  • Note
    Advertised power is tested per the specified standard in effect at the time of manufacture.
  • Displacement
    69 in³ 1.1 l
  • Gross Power - 2,400 rpm - SAE J1995:2014
    24.7 hp 18.4 kW
Hydraulic System
  • Auxiliary Circuit - Primary - Flow
    17 gal/min 65 l/min
  • Auxiliary Circuit - Secondary - Pressure
    3553 psi 245 bar
  • Operating Pressure - Swing
    2553 psi 176 bar
  • Pump Flow at 2,400 rpm
    26 gal/min 100 l/min
  • Type
    Load Sensing Hydraulics with Variable Displacement Piston Pump
  • Digging Force - Stick - Standard
    3732 lbf 16.6 kN
  • Operating Pressure - Travel
    3553 psi 245 bar
  • Digging Force - Bucket
    6385 lbf 28.4 kN
  • Operating Pressure - Equipment
    3553 psi 245 bar
  • Auxiliary Circuit - Primary - Pressure
    3553 psi 245 bar
  • Auxiliary Circuit - Secondary - Flow
    7 gal/min 25 l/min
  • Digging Force - Stick - Long
    3327 lbf 14.8 kN
  • Note
    * Flow and pressure are not combinable. Under load, as flow rises pressure goes down.
Service Refill Capacities
  • Cooling System
    1.1 gal (US) 4 l
  • Hydraulic Tank
    4.8 gal (US) 18 l
  • Engine Oil
    1.1 gal (US) 4 l
  • Fuel Tank
    11.9 gal (US) 45 l
  • Hydraulic System
    9.2 gal (US) 35 l
Sound
  • Average Exterior Sound Pressure (ISO 6395:2008)
    94 dB(A) 94 dB(A)
  • Operator Sound Pressure (ISO 6396:2008)
    78 dB(A) 78 dB(A)
  • Note
    European Union Directive “2000/14/EC”
Sustainability
  • Recyclability
    95%
Swing System
  • Boom Swing - Right
    50 ° 50 °
  • Machine Swing Speed
    9 r/min 9 r/min
  • Boom Swing - Left
    75 ° 75 °
Travel System
  • Gradeability - Maximum
    30 degrees
  • Ground Pressure - Maximum Weight
    4.7 psi 32.3 kPa
  • Ground Pressure - Minimum Weight
    4 psi 27.6 kPa
  • Travel Speed - High
    2.8 mile/h 4.5 km/h
  • Maximum Traction Force - Low Speed
    7059 lbf 31.4 kN
  • Travel Speed - Low
    1.6 mile/h 2.6 km/h
  • Maximum Traction Force - High Speed
    3305 lbf 14.7 kN
Weight Increase from Minimum Configuration
  • Counterweight
    221 lb 100 kg
  • Cab
    254 lb 115 kg
  • Steel Tracks
    276 lb 125 kg
  • Long Stick
    55 lb 25 kg
  • Extra Counterweight
    551 lb 250 kg
Weights
  • Operating Weight
    7817 lb 3545 kg
  • Note (1)
    *Minimum Weight is based on fixed rubber tracks, operator, full fuel tank, standard stick, blade, bucket and no extra counterweight.
  • EU: CE Plate Weight with Canopy***
    6791 lb 3080 kg
  • Minimum Operating Weight with Canopy*
    6670 lb 3025 kg
  • Minimum Operating Weight with Cab*
    6924 lb 3140 kg
  • Note (3)
    ***CE Plate Weight is based on the most common EU configuration. Includes 75 kg (165 lb) operator and full fuel tank and excludes bucket.
  • Maximum Operating Weight with Canopy**
    7552 lb 3425 kg
  • EU: CE Plate Weight with Cab***
    7012 lb 3180 kg
  • Maximum Operating Weight with Cab**
    7817 lb 3545 kg
  • Note (2)
    **Maximum Weight is based on steel tracks, operator, full fuel tank, long stick, blade, bucket and extra counterweight.
Benefits

SUSTAINABILITY

  • The Cat® C1.1 engine meets U.S. EPA Tier 4 Final, EU Stage V, and Japan 2014 emission standards.
  • Cat diesel engines are required to use ULSD (ultra-low sulfur diesel fuel with 15 ppm of sulfur or less) or ULSD blended with the following lower-carbon intensity fuels up to: 20% biodiesel FAME (fatty acid methyl ester) * or 100% renewable diesel, HVO (hydrotreated vegetable oil) and GTL (gas-to-liquid) fuels. Refer to guidelines for successful application. Please consult your Cat dealer or “Caterpillar Machine Fluids Recommendations” (SEBU6250) for details.
  • Auto Idle helps reduce unnecessary fuel burn and greenhouse gas emissions by allowing the engine to automatically go into idle mode when the machine is not working.
  • Engine Idle Shutdown Timer reduces fuel burn, greenhouse gas emissions and unnecessary idle time by shutting down the machine after a pre-set idling period.
  • Cruise control helps you maintain a constant speed as you travel across your jobsite saving fuel and reducing greenhouse gas emissions.
  • The Cat® Seat Belt Reminder provides audible and visual warnings to remind operators to buckle up during machine operation. The easy-to-install system is compatible with all equipment brands to help ensure operator safety.
  • Extended maintenance intervals not only reduce downtime but decrease the amount of fluid and filters that are replaced over the life of the machine.
  • Remote Flash minimizes downtime and maintenance time while keeping your asset running with maximum efficiency. Alerts for machine updates are sent virtually from your Cat dealer and updates can be deployed without a dealer technician needing to be onsite.(if equipped)
  • Remote Troubleshoot decreases maintenance time and keeps your machine running with maximum efficiency by allowing your Cat dealer to virtually test the machine while working. Once a problem is identified, a technician can fix it the first time, saving time and money.(if equipped)
*Engines with no aftertreatment devices can use higher blends, up to 100% biodiesel. (for use of blends higher than 20% biodiesel, consult your Cat dealer)

UNMATCHED DEALER SUPPORT

  • Your Cat dealer is here to help you reach your business goals. From providing equipment solutions to operator training to service needs and beyond, your Cat dealer is ready to help.

LOWER OPERATING COSTS

  • Equipped with features such as auto idle, auto engine shutdown, and efficient hydraulics with a variable displacement pump, the Cat mini excavator was designed with reducing your operating costs in mind.

BIG PERFORMANCE IN A COMPACT DESIGN

  • Strong lift and dig performance helps you get the job done faster. The compact radius design lets you access and work in the tightest areas. Dozer float allows for easy clean up.

STICK STEER TRAVEL MODE

  • Moving around the job site is even easier with the Cat Stick Steer option. Easily switch from traditional travel controls with levers and pedals to joystick controls to move the machine and to operate the blade. The benefit of less effort and improved control is in your hands!

LOWER OPERATING COSTS

SIMPLE SERVICE FOR LESS DOWNTIME

  • Maintenance is quick and easy on the Cat mini excavator. Routine check points are easy to access at ground level through the side doors. The unique tilt up cab or canopy lets you reach additional service areas when needed.

SAFETY ON THE JOB SITE

  • Your safety is our top priority. The Cat mini excavator is designed to help keep you safe on the job. Courtesy work lights and a fluorescent retractable seat belt with optional seat belt reminder system are just a couple of the safety features we’ve built into the machine.

STICK STEER TRAVEL MODE

EASY TO OPERATE

  • Controls are easy to use and the intuitive Next Generation LCD monitor provides easy to read machine information. An advanced touchscreen monitor can also be equipped.

ALL DAY COMFORT

  • Choose either a canopy or a sealed and pressurized cab which can be equipped with air conditioning, adjustable wrist rests, and a suspension seat option to help keep you working comfortably all day long.
Equipment Info

ENGINE

Cat C1.1 Turbo Engine (U.S. EPA Tier 4 Final/EU Stage V)

HYDRAULICS

Smart Tech Electronic Pump

GUARDING

Top Guard ISO 10262:1998 Level I

OPERATOR ENVIRONMENT

Tilt-up Canopy or Tilt-Up Cab

UNDERCARRIAGE

Rubber Belt (300 mm/11.8 in wide)

BOOM, STICK AND LINKAGES

One Piece Boom (2200 mm/86.6 in)

ELECTRICAL

12 Volt Battery