ALL DAY COMFORT
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Caterpillar
303 CR Mini Hydraulic Excavator
Net Power
23.6 hp
17.6 kW
Operating Weight
7817 lb
3545 kg
Dig Depth
116.1 in
2950 mm
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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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.
Features
EASY TO OPERATE
STICK STEER TRAVEL MODE
BIG PERFORMANCE IN A COMPACT DESIGN
SAFETY ON THE JOB SITE
SIMPLE SERVICE FOR LESS DOWNTIME
LOWER OPERATING COSTS
SUSTAINABILITY
Details
Specifications
Engine
| Spec | Value |
|---|---|
| Net Power | 23.6 hp 17.6 kW |
| Engine Model | C1.1 Turbo 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. 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. 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 |
Weights
| Spec | Value |
|---|---|
| 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. *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. ***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. **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 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. *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 |
Blade
| Spec | Value |
|---|---|
| Height | 13.8 in 350 mm |
| Width | 61 in 1550 mm |
Dimensions - Standard Stick
| Spec | Value |
|---|---|
| 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. *Overall Shipping Length depends on blade position during shipment. |
Swing System
| Spec | Value |
|---|---|
| Boom Swing – Right | 50 ° 50 ° |
| Machine Swing Speed | 9 r/min 9 r/min |
| Boom Swing – Left | 75 ° 75 ° |
Sound
| Spec | Value |
|---|---|
| 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” European Union Directive “2000/14/EC” |
Hydraulic System
| Spec | Value |
|---|---|
| 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 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. * Flow and pressure are not combinable. Under load, as flow rises pressure goes down. |
Travel System
| Spec | Value |
|---|---|
| Gradeability – Maximum | 30 degrees 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 |
Service Refill Capacities
| Spec | Value |
|---|---|
| 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 |
Weight Increase from Minimum Configuration
| Spec | Value |
|---|---|
| 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 |
Certification - Cab and Canopy
| Spec | Value |
|---|---|
| Roll Over Protective Structure (ROPS) | ISO 12117-2:2008 ISO 12117-2:2008 |
| Top Guard | ISO 10262:1998 (Level I) ISO 10262:1998 (Level I) |
| Tip Over Protective Structure (TOPS) | ISO 12117:1997 ISO 12117:1997 |
Sustainability
| Spec | Value |
|---|---|
| Recyclability | 95% 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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