303.5 CR Mini Hydraulic Excavator

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Description

Technical Specifications

Benefits and Features

Equipment

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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.

Engine
Net Power	23.6 hp
Engine Model	C1.7
Note (2)	Net power advertised is the power available at the flywheel when the engine is at rated speed and rated power when the engine is installed with the factory configured fan, air intake system, exhaust system, and alternator with a minimum alternator load.
Stroke	3.9 in
Gross Power - 2,400 rpm - SAE J1995	24.7 hp
Bore	3.3 in
Net Power @ 2,200 rpm - U.S. EPA Tier 4 Final/EU Stage V - ISO 9249/EEC 80/1269	23.6 hp
Displacement	104 in³
Note	Net power is tested per ISO 9249 and 80/1269/EEC.
Emissions	Meets U.S. EPA Tier 4 Final and EU Stage V emission standards.
Weights
Operating Weight	9239 lb
Minimum Operating Weight with Canopy*	7673 lb
EU: CE Plate Weight with Cab***	8004 lb
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 Cab**	9239 lb
Maximum Operating Weight with Canopy**	8930 lb
EU: CE Plate Weight with Canopy***	7784 lb
Minimum Operating Weight with Cab*	7982 lb
Note (1)	* Minimum Weight is based on fixed rubber tracks, operator, full fuel tank, standard stick, blade, bucket and no extra counterweight.
Note (2)	**Maximum Weight is based on steel tracks, operator, full fuel tank, long stick, blade, bucket and extra counterweight.
Dimensions - Long Stick
Dig Depth	122.4 in
Tail Swing with Counterweight	37.8 in
Track Belt/Shoe Width	11.8 in
Maximum Reach	216.9 in
O/A Track Width	70.1 in
Maximum Blade Depth	21.1 in
Tail Swing without Counterweight	35 in
Stick Length	61.4 in
Swing Bearing - Height	22.2 in
Boom Swing - Left	640 mm
Overall Shipping Length*	190.9 in
Maximum Reach - Ground Level	211.8 in
Maximum Dump Clearance	141.7 in
O/A Shipping Height	97.6 in
Note	*Overall Shipping Length depends on blade position during shipment.
Boom In Reach	73.2 in
Maximum Dig Height	197.6 in
Vertical Wall	94.1 in
Boom Height - Shipping Position	68.9 in
Maximum Blade Height	15.2 in
O/A Undercarriage Length	87.4 in
Boom Swing - Right	34.3 °
Ground Clearance	12.2 in
Blade
Height	13.8 in
Width	70.1 in
Certification - Cab and Canopy
Top Guard	ISO 10262:1998 (Level I)
Roll Over Protective Structure (ROPS)	ISO 12117-2:2008
Tip Over Protective Structure (TOPS)	ISO 12117:1997
Sustainability
Recyclability	95%
Dimensions - Standard Stick
Tail Swing with Counterweight	37.8 in
Tail Swing with Extra Counterweight	39.6 in
Boom Swing - Right	34.3 °
Stick Length	49.6 in
Maximum Reach - Ground Level	202 in
Boom Swing - Left	25.2 °
Maximum Reach	207.5 in
Track Belt/Shoe Width	11.8 in
Maximum Dump Clearance	137.4 in
Swing Bearing - Height	22.2 in
Boom Height - Shipping Position	59.8 in
O/A Shipping Height	97.6 in
Overall Shipping Length*	189 in
Boom In Reach	69.3 in
Note	*Overall Shipping Length depends on blade position during shipment.
Maximum Dig Height	193.7 in
Vertical Wall	88.6 in
Dig Depth	110.6 in
O/A Undercarriage Length	87.4 in
Tail Swing without Counterweight	35 in
Maximum Blade Depth	21.1 in
Maximum Blade Height	15.2 in
Ground Clearance	12.2 in
Weight Increase from Minimum Configuration
Cab	309 lb
Counterweight	221 lb
Steel Tracks	287 lb
Long Stick	44 lb
Angle Blade	353 lb
Extra Counterweight	551 lb
Dimensions (Approximate) - Standard Stick
Tail Swing with Extra Counterweight	39.6 in
Dimensions (Approximate) - Long Stick
Tail Swing with Extra Counterweight	39.6 in
Service Refill Capacities
Fuel Tank	11.9 gal (US)
Hydraulic Tank	5.3 gal (US)
Cooling System	1.8 gal (US)
Engine Oil	1.6 gal (US)
Hydraulic System	11.9 gal (US)
Travel System
Ground Pressure - Minimum Weight	4.3 psi
Maximum Traction Force - High Speed	3799 lbf
Maximum Traction Force - Low Speed	6969 lbf
Travel Speed - High	2.8 mile/h
Gradeability - Maximum	30 degrees
Travel Speed - Low	1.6 mile/h
Ground Pressure - Maximum Weight	5.2 psi
Hydraulic System
Pump Flow at 2,400 rpm	26 gal/min
Auxiliary Circuit - Primary - Flow	18 gal/min
Operating Pressure - Swing	2625 psi
Type	Load Sensing Hydraulics with Variable Displacement Piston Pump
Auxiliary Circuit - Secondary - Pressure	3553 psi
Digging Force - Stick - Long	3799 lbf
Auxiliary Circuit - Secondary - Flow	7 gal/min
Digging Force - Bucket	7419 lbf
Operating Pressure - Travel	3553 psi
Operating Pressure - Equipment	3553 psi
Auxiliary Circuit - Primary - Pressure	3553 psi
Digging Force - Stick - Standard	4249 lbf
Note	*Flow and pressure are not combinable. Under load, as flow rises pressure goes down.
Sound
Note	European Union Directive ‚ "2000/14/EC"
Operator Sound Pressure (ISO 6396:2008)	78 dB(A)
Average Exterior Sound Pressure (ISO 6395:2008)	94 dB(A)
Swing System
Machine Swing Speed	9 r/min
Boom Swing - Right	50 °
Boom Swing - Left	75 °

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)

Standard Equipment:

Engine
- Cat C1.7 NA Engine (U.S. EPA Tier 4 Final/EU Stage V)
- Automatic Engine Idle
- Automatic Engine Shutdown
- Automatic Two Speed Travel
- Fuel Water Separator
- Power on Demand (not available in all regions)
- Variable Displacement Piston Pump
- Load Sensing/Flow Sharing Hydraulics
Hydraulics
- Smart Tech Electronic Pump
- Accumulator
- Automatic Swing Brake
- Auxiliary Hydraulic Lines
- One and Two Way Auxiliary Flow
- Continuous Auxiliary Flow
- Auxiliary Line Quick Disconnects
Operator Environment
- Tilt-up Canopy or Tilt-Up Cab
- Top Guard ISO 10262:1998 Level I
- ROPS – ISO 12117-2:2008
- TOPS – ISO 12117:1997
- Stick Steer Mode
- Travel Cruise Control
- Control Pattern Changer (optional in some regions)
- Adjustable Wrist Rests
- Washable Floor Mat
- Travel Pedals and Hand Levers
- Machine Security
- Machine Security – Standard Key with Pass Code
- Fabric Suspension Seat (Cab only)
- Vinyl Suspension Seat (Canopy only)
- Hydraulic Lockout – All Controls
- Retractable High Visibility Seat Belt (75 mm/3 in)
- Coat Hook
- Cup Holder
- Storage Pocket
- Skylight
- Mounting Bosses for Front
- Signaling/Warning Horn
- Interior Light (Cab only)
- Boom Light, Halogen
- Utility Space for Mobile Phone
- Next Generation Color LCD Monitor (IP66)
  – Fuel Level and Coolant Temperature Gauges
  – Maintenance and Machine Monitoring
  – Performance and Machine Adjustments
  – Numeric Security Code
  – Multiple Languages
  – Hour Meter with Wake Up Switch
  – Jog Dial (cab only)
  
  Next Generation Advanced Monitor (Optional)
  – Fuel Level and Coolant Temperature Gauges
  – Maintenance and Machine Monitoring
  – Performance and Machine Adjustments
  – Numeric Security Code
  – Multiple Languages
  – Hour Meter with Wake Up Switch
Undercarriage
- Rubber Belt (300 mm/11.8 in wide)
- Dozer Blade
- Dozer Blade Float
- Angle Blade
- Tie Downs on Track Frame
Boom, Stick And Linkages
- One Piece Boom (2400 mm/94.5 in)
- Standard Stick (1260 mm/49.6 in)
- Front Shovel Capable – Pin-On
- Thumb Ready (not available in all regions)
- Certified Lifting Eye (optional in some regions)
Electrical
- 12 Volt Battery
- Software (machine and monitor)
- Maintenance Free Battery
- Signaling/Warning Horn
- 12 Volt Power Socket