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303 CR Mini Excavator

303 CR Mini Hydraulic Excavator

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Overview

The Cat® 303 CR Mini Excavator delivers power and performance in a compact size to help you work in a wide range of applications.

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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 with optional seat belt reminder system 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.
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.
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.
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 with optional seat belt reminder system 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.
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.
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)
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Engine

Net Power
23.6hp
Engine Model
C1.1 Turbo
Bore
3in
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.
Gross Power - SAE J1995:2014
24.7HP
Net Power - 2,400 rpm - ISO 9249, 80/1269/EEC
23.6hp
Emissions
Meets U.S. EPA Tier 4 Final and EU Stage V emission standards.
Stroke
3.2in
Note
Advertised power is tested per the specified standard in effect at the time of manufacture.
Displacement
69in³
Gross Power - 2,400 rpm - SAE J1995:2014
24.7hp

Weights

Operating Weight
7817lb
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***
6791lb
Minimum Operating Weight with Canopy*
6670lb
Minimum Operating Weight with Cab*
6924lb
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**
7552lb
EU: CE Plate Weight with Cab***
7012lb
Maximum Operating Weight with Cab**
7817lb
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
116.1in
Boom Height - Shipping Position
75.6in
Tail Swing with Counterweight
35in
Track Belt/Shoe Width
11.8in
Maximum Reach
206.3in
Boom In Reach
74.2in
Boom Swing - Right
34.3in
Tail Swing
33.3in
Maximum Dump Clearance
130.3in
Ground Clearance
12.2in
O/A Undercarriage Length
81.5in
O/A Shipping Height
97.6in
Track Width - Expanded
61in
Maximum Blade Depth
21.1in
Maximum Reach - Ground Level
201.2in
Stick Length
61.4in
Overall Shipping Length*
179.5in
Maximum Dig Height
183.1in
Swing Bearing - Height
22.4in
Note
*Overall Shipping Length depends on blade position during shipment.
Tail Swing without Counterweight
30.5in
Maximum Blade Height
15.2in
Boom Swing - Left
25.2in
Vertical Wall
81.5in

Blade

Height
13.8in
Width
61in

Dimensions - Standard Stick

Maximum Blade Depth
21.1in
Tail Swing without Counterweight
30.5in
Maximum Dig Height
177.6in
O/A Undercarriage Length
81.5in
Boom Height - Shipping Position
63in
Vertical Wall
71.7in
Overall Shipping Length*
177.6in
Boom Swing - Left
25.2in
O/A Shipping Height
97.6in
Track Shoe Width
61in
Boom Swing - Right
34.3in
Tail Swing with Extra Counterweight
35in
Swing Bearing - Height
22.4in
Tail Swing
33.3in
Maximum Blade Height
15.2in
Dig Depth
104.3in
Maximum Dump Clearance
124.8in
Maximum Reach - Ground Level
190.2in
Maximum Reach
196.1in
Ground Clearance
12.2in
Track Belt/Shoe Width
11.8in
Boom In Reach
68.9in
Stick Length
49.6in
Note
*Overall Shipping Length depends on blade position during shipment.

Swing System

Boom Swing - Right
50°
Machine Swing Speed
9r/min
Boom Swing - Left
75°

Sound

Average Exterior Sound Pressure (ISO 6395:2008)
94dB(A)
Operator Sound Pressure (ISO 6396:2008)
78dB(A)
Note
European Union Directive “2000/14/EC”

Hydraulic System

Auxiliary Circuit - Primary - Flow
17gal/min
Auxiliary Circuit - Secondary - Pressure
3553psi
Operating Pressure - Swing
2553psi
Pump Flow at 2,400 rpm
26gal/min
Type
Load Sensing Hydraulics with Variable Displacement Piston Pump
Digging Force - Stick - Standard
3732lbf
Operating Pressure - Travel
3553psi
Digging Force - Bucket
6385lbf
Operating Pressure - Equipment
3553psi
Auxiliary Circuit - Primary - Pressure
3553psi
Auxiliary Circuit - Secondary - Flow
7gal/min
Digging Force - Stick - Long
3327lbf
Note
* Flow and pressure are not combinable. Under load, as flow rises pressure goes down.

Travel System

Gradeability - Maximum
30 degrees
Ground Pressure - Maximum Weight
4.7psi
Ground Pressure - Minimum Weight
4psi
Travel Speed - High
2.8mile/h
Maximum Traction Force - Low Speed
7059lbf
Travel Speed - Low
1.6mile/h
Maximum Traction Force - High Speed
3305lbf

Service Refill Capacities

Cooling System
1.1gal (US)
Hydraulic Tank
4.8gal (US)
Engine Oil
1.1gal (US)
Fuel Tank
11.9gal (US)
Hydraulic System
9.2gal (US)

Weight Increase from Minimum Configuration

Counterweight
221lb
Cab
254lb
Steel Tracks
276lb
Long Stick
55lb
Extra Counterweight
551lb

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

Sustainability

Recyclability
95%

Standard/Optional Features

Standard Equipment:

  • Engine
    • Cat C1.1 Turbo 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
  • Guarding
    • Top Guard ISO 10262:1998 Level I
  • Operator Environment
    • Tilt-up Canopy or Tilt-Up Cab
    • ROPS – ISO 12117-2:2008
    • TOPS – ISO 12117:1997
    • Next Generation Advanced Monitor
      – Touch Screen
      – Site Reference System
      – High Definition Camera Capable (IP68 and IP69K)
      – Numeric Security Code
    • 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)
  • Undercarriage
    • Rubber Belt (300 mm/11.8 in wide)
    • Dozer Blade
    • Dozer Blade Float
    • Tie Downs on Track Frame
  • Boom, Stick And Linkages
    • One Piece Boom (2200 mm/86.6 in)
    • Standard Stick (1260 mm/49.6 in)
    • Front Shovel Capable – Hydraulic Coupler
    • 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

Optional Equipment:

  • Operator Environment
    • Cab with Air Conditioning
    • Cab with Heater
    • Control Pattern Changer (optional in some regions)
    • No Travel Pedals and Hand Levers
    • Machine Security – Push to Start with Key Fob/Pass Code
    • Vinyl Non-Suspension Seat (Canopy only)
    • LED Front Lights
    • LED Front and Rear Lights
    • LED Boom Light
    • Mirrors Left and Right
    • Radio – Bluetooth®, Auxiliary, Microphone, USB (charging only) (Cab only)
    • Seat Belt Reminder System
  • Undercarriage
    • Steel Track (300 mm/11.8 in wide)
  • Boom, Stick And Linkages
    • Long Stick (1560 mm/61.4 in)
    • Front Shovel Capable – Dual Lock Manual Coupler
    • Attachments including Couplers, Thumbs, Buckets, Augers and Hammers
    • 2nd Auxiliary Hydraulic Lines
    • Boom Lowering Check Valve
    • Stick Lowering Check Valve
    • Hydraulic Quick Coupler Lines (not available in all regions)
  • Electrical
    • Battery Disconnect
    • Product Link PL243 (regulations apply)
    • Product Link PLE643 (regulations apply)
    • Travel Alarm (standard in some regions)
  • Guarding
    • Polycarbonate Front Guard (ISO 10262:1998 Level I and EN356 P5A)
    • Polycarbonate Half Height Front Guard (Canopy only)
  • Other
    • Bio Oil Capable
    • Eco Drain
    • Water Jacket Heater

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