The Cat® 303 CR Mini Excavator delivers power and performance in a compact size to help you work in a wide range of applications.
Caterpillar
303 CR Mini Hydraulic Excavator
Overview
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Exterior
Model shown represents features on all Cat® Mini Excavators except where indicated.
Interior
Model shown represents features on all Cat® Mini Excavators except where indicated.
Documents
- 303 CR Small Product Brochure (Global except China and Japan)
- Cat Mini Hydraulic Excavators Product Line Brochure (North America)
- Cat Mini Hydraulic Excavators Product Line Brochure (Europe)
- Options And Accessories Kit Guide for Mini Hydraulic Excavators
- Attachment Compatibility Guide for Mini Excavators
- Cat Attachments for Mini Excavators Brochure
Features
Specifications
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Engine
Spec Value Net Power 23.6 hp Engine Model C1.1 Turbo Bore 3 in Net Power - 2,400 rpm - ISO 9249, 80/1269/EEC 23.6 hp Emissions Meets U.S. EPA Tier 4 Final and EU Stage V emission standards. Stroke 3.2 in Note Advertised power is tested per the specified standard in effect at the time of manufacture. Displacement 69 in³ Gross Power - 2,400 rpm - SAE J1995:2014 24.7 hp -
Weights
Spec Value Operating Weight 7817 lb 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 Minimum Operating Weight with Canopy* 6670 lb Minimum Operating Weight with Cab* 6924 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 Canopy** 7552 lb EU: CE Plate Weight with Cab*** 7012 lb Maximum Operating Weight with Cab** 7817 lb Note (2) **Maximum Weight is based on steel tracks, operator, full fuel tank, long stick, blade, bucket and extra counterweight. -
Dimensions - Long Stick
Spec Value Dig Depth 116.1 in Boom Height - Shipping Position 75.6 in Tail Swing with Counterweight 35 in Track Belt/Shoe Width 11.8 in Maximum Reach 206.3 in Boom In Reach 74.2 in Boom Swing - Right 34.3 in Tail Swing 33.3 in Maximum Dump Clearance 130.3 in Ground Clearance 12.2 in O/A Undercarriage Length 81.5 in O/A Shipping Height 97.6 in Track Width - Expanded 61 in Maximum Blade Depth 21.1 in Maximum Reach - Ground Level 201.2 in Stick Length 61.4 in Overall Shipping Length* 179.5 in Maximum Dig Height 183.1 in Swing Bearing - Height 22.4 in Note *Overall Shipping Length depends on blade position during shipment. Tail Swing without Counterweight 30.5 in Maximum Blade Height 15.2 in Boom Swing - Left 25.2 in Vertical Wall 81.5 in -
Blade
Spec Value Height 13.8 in Width 61 in -
Dimensions - Standard Stick
Spec Value Maximum Blade Depth 21.1 in Tail Swing without Counterweight 30.5 in Maximum Dig Height 177.6 in O/A Undercarriage Length 81.5 in Boom Height - Shipping Position 63 in Vertical Wall 71.7 in Overall Shipping Length* 177.6 in Boom Swing - Left 25.2 in O/A Shipping Height 97.6 in Track Shoe Width 61 in Boom Swing - Right 34.3 in Tail Swing with Extra Counterweight 35 in Swing Bearing - Height 22.4 in Tail Swing 33.3 in Maximum Blade Height 15.2 in Dig Depth 104.3 in Maximum Dump Clearance 124.8 in Maximum Reach - Ground Level 190.2 in Maximum Reach 196.1 in Ground Clearance 12.2 in Track Belt/Shoe Width 11.8 in Boom In Reach 68.9 in Stick Length 49.6 in Note *Overall Shipping Length depends on blade position during shipment. -
Swing System
Spec Value Boom Swing - Right 50 ° Machine Swing Speed 9 r/min Boom Swing - Left 75 ° -
Sound
Spec Value Average Exterior Sound Pressure (ISO 6395:2008) 94 dB(A) Operator Sound Pressure (ISO 6396:2008) 78 dB(A) Note European Union Directive “2000/14/EC” -
Hydraulic System
Spec Value Auxiliary Circuit - Primary - Flow 17 gal/min Auxiliary Circuit - Secondary - Pressure 3553 psi Operating Pressure - Swing 2553 psi Pump Flow at 2,400 rpm 26 gal/min Type Load Sensing Hydraulics with Variable Displacement Piston Pump Digging Force - Stick - Standard 3732 lbf Operating Pressure - Travel 3553 psi Digging Force - Bucket 6385 lbf Operating Pressure - Equipment 3553 psi Auxiliary Circuit - Primary - Pressure 3553 psi Auxiliary Circuit - Secondary - Flow 7 gal/min Digging Force - Stick - Long 3327 lbf Note * Flow and pressure are not combinable. Under load, as flow rises pressure goes down. -
Travel System
Spec Value Gradeability - Maximum 30 degrees Ground Pressure - Maximum Weight 4.7 psi Ground Pressure - Minimum Weight 4 psi Travel Speed - High 2.8 mile/h Maximum Traction Force - Low Speed 7059 lbf Travel Speed - Low 1.6 mile/h Maximum Traction Force - High Speed 3305 lbf -
Service Refill Capacities
Spec Value Cooling System 1.1 gal (US) Hydraulic Tank 4.8 gal (US) Engine Oil 1.1 gal (US) Fuel Tank 11.9 gal (US) Hydraulic System 9.2 gal (US) -
Weight Increase from Minimum Configuration
Spec Value Counterweight 221 lb Cab 254 lb Steel Tracks 276 lb Long Stick 55 lb Extra Counterweight 551 lb -
Certification - Cab and Canopy
Spec Value 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
Spec Value Recyclability 95%
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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