303.5 CR Mini Hydraulic Excavator

The Performance Upgraded Cat® 303.5 CR Mini Excavator

The upgraded 303.5 CR delivers power and performance in a wide range of applications. Faster transient speeds, coupled with exclusive features like stick steer joystick travel get you moving quickly and comfortably so you can focus on the task at hand.

The Cat® 303.5 CR Mini Excavator delivers power and performance in a compact size to help you work in a wide range of applications.

Highlights
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Features & Specs
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Equipment Highlights

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.
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.
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!
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.
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 are just a couple of the safety features we’ve built into the machine.
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.
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.
SUSTAINABILITY
  • The Cat® C1.7 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)
  • Cat Grade with advanced 2D and 3D technologies combine advanced guidance with optional automated machine control helping you reach grading targets while reducing fuel burn and greenhouse gas emissions by improving efficiency, job site productivity, and accuracy. (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)

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Features + Specs

Equipment Features
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Specs
  • Width: 70.1 in
  • Height: 13.8 in
  • Operator Sound Pressure (ISO 6396:2008): 78 dB(A)
  • Average Exterior Sound Pressure (ISO 6395:2008): 94 dB(A)
  • Note: European Union Directive ‚ "2000/14/EC"
  • Net Power: 23.6 hp
  • Engine Model: C1.7
  • Net Power @ 2,200 rpm - U.S. EPA Tier 4 Final/EU Stage V - ISO 9249/EEC 80/1269: 23.6 hp
  • Net Power - ISO 9249: 24.7 hp
  • Bore: 3.3 in
  • Stroke: 3.9 in
  • Displacement: 104 in³
  • Emissions: Meets U.S. EPA Tier 4 Final and EU Stage V emission standards.
  • Note: Advertised power is tested per the specified standard in effect at the time of manufacture.
  • Note (1): Net power advertised is the power available at the flywheel when the engine is at the rated speed of 2,200 rpm and the engine is installed with the factory configured fan, air intake system, exhaust system and alternator with a minimum alternator load.
  • Operating Weight: 9239 lb
  • Minimum Operating Weight with Canopy*: 7673 lb
  • Maximum Operating Weight with Canopy**: 8930 lb
  • Minimum Operating Weight with Cab*: 7982 lb
  • Maximum Operating Weight with Cab**: 9239 lb
  • EU: CE Plate Weight with Canopy***: 7784 lb
  • EU: CE Plate Weight with Cab***: 8004 lb
  • Note (1): *Minimum Weight is based on fixed rubber tracks, operator, full fuel tank, standard stick, blade, no bucket and extra counterweight.
  • Note (2): **Maximum Weight is based on steel tracks, operator, full fuel tank, long stick, blade, no bucket and extra counterweight.
  • 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.
  • Machine Swing Speed: 9 r/min
  • Boom Swing - Left: 75 °
  • Boom Swing - Right: 50 °
  • Travel Speed - High: 2.8 mile/h
  • Travel Speed - Low: 1.6 mile/h
  • Maximum Traction Force - High Speed: 3799 lbf
  • Maximum Traction Force - Low Speed: 6969 lbf
  • Ground Pressure - Minimum Weight: 4.3 psi
  • Ground Pressure - Maximum Weight: 5.2 psi
  • Gradeability - Maximum: 30 degrees
  • Recyclability: 95%
  • Type: Load Sensing Hydraulics with Variable Displacement Piston Pump
  • Pump Flow at 2,400 rpm: 26 gpm
  • Operating Pressure - Equipment: 3553 psi
  • Operating Pressure - Travel: 3553 psi
  • Operating Pressure - Swing: 2625 psi
  • Auxiliary Circuit - Primary - Flow: 18 gpm
  • Auxiliary Circuit - Primary - Pressure: 3553 psi
  • Auxiliary Circuit - Secondary - Flow: 7 gpm
  • Auxiliary Circuit - Secondary - Pressure: 3553 psi
  • Digging Force - Stick - Standard: 4249 lbf
  • Digging Force - Stick - Long: 3799 lbf
  • Digging Force - Bucket: 7419 lbf
  • Note: *Flow and pressure are not combinable. Under load, as flow rises pressure goes down.
  • Air Conditioning: The air conditioning system on this machine contains the fluorinated greenhouse gas refrigerant R134a or R1234yf (Europe) (Global Warming Potential = 1430). See label or instruction manual for gas refrigerant identification. The system contains 0.75 kg (1.65 lb), 0.90 kg (1.98 lb) or 1.0 kg (2.20 lb) of refrigerant which has a CO2 equivalent of 1.430 metric tonnes (1.576 tons) for R134a and 0.001 tonnes (0.001 tons) for R1234yf (Europe).
  • Dig Depth: 122.4 in
  • Vertical Wall: 94.1 in
  • Maximum Reach - Ground Level: 211.8 in
  • Maximum Reach: 216.9 in
  • Maximum Dig Height: 197.6 in
  • Maximum Dump Clearance: 141.7 in
  • Boom In Reach: 73.2 in
  • Tail Swing without Counterweight: 35 in
  • Tail Swing - with Extra Counterweight: 39.6 in
  • Maximum Blade Depth: 21.1 in
  • Maximum Blade Height: 15.2 in
  • Boom Height - Shipping Position: 68.9 in
  • O/A Shipping Height: 97.6 in
  • Swing Bearing - Height: 22.2 in
  • O/A Undercarriage Length: 87.4 in
  • Overall Shipping Length*: 190.9 in
  • Boom Swing - Right: 34.3 °
  • Boom Swing - Left: 640 mm
  • Track Belt/Shoe Width: 11.8 in
  • Track Width: 70.1 in
  • Minimum Ground Clearance Below Undercarriage: 12.2 in
  • Stick Length: 61.4 in
  • Note: *Overall Shipping Length depends on blade position during shipment.
  • Cooling System: 1.8 gal (US)
  • Engine Oil: 1.6 gal (US)
  • Fuel Tank: 11.9 gal (US)
  • Hydraulic Tank: 5.3 gal (US)
  • Hydraulic System: 11.9 gal (US)
  • Dig Depth: 110.6 in
  • Vertical Wall: 88.6 in
  • Maximum Reach - Ground Level: 202 in
  • Maximum Reach: 207.5 in
  • Maximum Dig Height: 193.7 in
  • Maximum Dump Clearance: 137.4 in
  • Boom In Reach: 69.3 in
  • Tail Swing without Counterweight: 35 in
  • Tail Swing with Extra Counterweight: 39.6 in
  • Maximum Blade Depth: 21.1 in
  • Maximum Blade Height: 15.2 in
  • Boom Height - Shipping Position: 59.8 in
  • O/A Shipping Height: 97.6 in
  • Swing Bearing - Height: 22.2 in
  • O/A Undercarriage Length: 87.4 in
  • Overall Shipping Length*: 189 in
  • Boom Swing - Right: 34.3 °
  • Boom Swing - Left: 25.2 °
  • Track Belt/Shoe Width: 11.8 in
  • Track Width: 70.1 in
  • Minimum Ground Clearance Below Undercarriage: 12.2 in
  • Stick Length: 49.6 in
  • Note: *Overall Shipping Length depends on blade position during shipment.
  • Roll Over Protective Structure (ROPS): ISO 12117-2:2008
  • Tip Over Protective Structure (TOPS): ISO 12117:1997
  • Top Guard: ISO 10262:1998 (Level I)
  • Cab: 309 lb
  • Counterweight: 221 lb
  • Extra Counterweight: 551 lb
  • Long Stick: 44 lb
  • Steel Tracks: 287 lb
  • Angle Blade: 353 lb
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