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303.5 CR Mini Hydraulic Excavator
Exterior View
Interior View
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303.5 CR Mini Hydraulic Excavator

Net Power23.6 hp
Engine ModelC1.7
Net Power @ 2,200 rpm – U.S. EPA Tier 4 Final/EU Stage V – ISO 9249/EEC 80/126923.6 hp
Net Power – ISO 924924.7 hp
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Learn more about our 303.5 CR Mini Hydraulic Excavator

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.

Net Power
23.6hp
Engine Model
C1.7
Net Power @ 2,200 rpm - U.S. EPA Tier 4 Final/EU Stage V - ISO 9249/EEC 80/1269
23.6hp
Net Power - ISO 9249
24.7hp
Bore
3.3in
Stroke
3.9in
Displacement
104in³
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
9239lb
Minimum Operating Weight with Canopy*
7673lb
Maximum Operating Weight with Canopy**
8930lb
Minimum Operating Weight with Cab*
7982lb
Maximum Operating Weight with Cab**
9239lb
EU: CE Plate Weight with Canopy***
7784lb
EU: CE Plate Weight with Cab***
8004lb
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.
Dig Depth
122.4in
Vertical Wall
94.1in
Maximum Reach - Ground Level
211.8in
Maximum Reach
216.9in
Maximum Dig Height
197.6in
Maximum Dump Clearance
141.7in
Boom In Reach
73.2in
Tail Swing without Counterweight
35in
Tail Swing - with Extra Counterweight
39.6in
Maximum Blade Depth
21.1in
Maximum Blade Height
15.2in
Boom Height - Shipping Position
68.9in
O/A Shipping Height
97.6in
Swing Bearing - Height
22.2in
O/A Undercarriage Length
87.4in
Overall Shipping Length*
190.9in
Boom Swing - Right
34.3°
Boom Swing - Left
640mm
Track Belt/Shoe Width
11.8in
Track Width
70.1in
Minimum Ground Clearance Below Undercarriage
12.2in
Stick Length
61.4in
Note
*Overall Shipping Length depends on blade position during shipment.
Recyclability
95%
Width
70.1in
Height
13.8in
Cab
309lb
Counterweight
221lb
Extra Counterweight
551lb
Long Stick
44lb
Steel Tracks
287lb
Angle Blade
353lb
Travel Speed - High
2.8mile/h
Travel Speed - Low
1.6mile/h
Maximum Traction Force - High Speed
3799lbf
Maximum Traction Force - Low Speed
6969lbf
Ground Pressure - Minimum Weight
4.3psi
Ground Pressure - Maximum Weight
5.2psi
Gradeability - Maximum
30 degrees
Operator Sound Pressure (ISO 6396:2008)
78dB(A)
Average Exterior Sound Pressure (ISO 6395:2008)
94dB(A)
Note
European Union Directive ‚ "2000/14/EC"
Type
Load Sensing Hydraulics with Variable Displacement Piston Pump
Pump Flow at 2,400 rpm
26gpm
Operating Pressure - Equipment
3553psi
Operating Pressure - Travel
3553psi
Operating Pressure - Swing
2625psi
Auxiliary Circuit - Primary - Flow
18gpm
Auxiliary Circuit - Primary - Pressure
3553psi
Auxiliary Circuit - Secondary - Flow
7gpm
Auxiliary Circuit - Secondary - Pressure
3553psi
Digging Force - Stick - Standard
4249lbf
Digging Force - Stick - Long
3799lbf
Digging Force - Bucket
7419lbf
Note
*Flow and pressure are not combinable. Under load, as flow rises pressure goes down.
Machine Swing Speed
9r/min
Boom Swing - Left
75°
Boom Swing - Right
50°
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
Dig Depth
110.6in
Vertical Wall
88.6in
Maximum Reach - Ground Level
202in
Maximum Reach
207.5in
Maximum Dig Height
193.7in
Maximum Dump Clearance
137.4in
Boom In Reach
69.3in
Tail Swing without Counterweight
35in
Tail Swing with Extra Counterweight
39.6in
Maximum Blade Depth
21.1in
Maximum Blade Height
15.2in
Boom Height - Shipping Position
59.8in
O/A Shipping Height
97.6in
Swing Bearing - Height
22.2in
O/A Undercarriage Length
87.4in
Overall Shipping Length*
189in
Boom Swing - Right
34.3°
Boom Swing - Left
25.2°
Track Belt/Shoe Width
11.8in
Minimum Ground Clearance Below Undercarriage
12.2in
Stick Length
49.6in
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)
Cooling System
1.8gal (US)
Engine Oil
1.6gal (US)
Fuel Tank
11.9gal (US)
Hydraulic Tank
5.3gal (US)
Hydraulic System
11.9gal (US)
Cat C1.7 NA Engine (U.S. EPA Tier 4 Final/EU Stage V)
Cat C1.7 NA Engine (U.S. EPA Tier 4 Final/EU Stage V)
Automatic Engine Idle
Automatic Engine Idle
Automatic Engine Shutdown
Automatic Engine Shutdown
Automatic Two Speed Travel
Automatic Two Speed Travel
Fuel Water Separator
Fuel Water Separator
Power on Demand (not available in all regions)
Power on Demand (not available in all regions)
Variable Displacement Piston Pump
Variable Displacement Piston Pump
Load Sensing/Flow Sharing Hydraulics
Load Sensing/Flow Sharing Hydraulics
Smart Tech Electronic Pump
Accumulator
Smart Tech Electronic Pump
Automatic Swing Brake
Accumulator
Auxiliary Line Quick Disconnects
Automatic Swing Brake
One and Two Way Auxiliary Flow
Auxiliary Hydraulic Lines
Continuous Auxiliary Flow
One and Two Way Auxiliary Flow
Auxiliary Hydraulic Lines
Continuous Auxiliary Flow
Auxiliary Line Quick Disconnects
Tilt-up Canopy or Tilt-Up Cab
Stick Steer Mode
Tilt-up Canopy or Tilt-Up Cab
Travel Cruise Control
Top Guard ISO 10262:1998 Level I
Control Pattern Changer (optional in some regions)
ROPS – ISO 12117-2:2008
Adjustable Wrist Rests
TOPS – ISO 12117:1997
Washable Floor Mat
Travel Pedals and Hand Levers
Stick Steer Mode
Machine Security
Travel Cruise Control
Machine Security – Standard Key with Pass Code
Control Pattern Changer (optional in some regions)
Fabric Suspension Seat (Cab only)
Adjustable Wrist Rests
Vinyl Suspension Seat (Canopy only)
Washable Floor Mat
Hydraulic Lockout – All Controls
Travel Pedals and Hand Levers
Retractable High Visibility Seat Belt (75 mm/3 in)
Machine Security
Coat Hook
Machine Security – Standard Key with Pass Code
Cup Holder
Fabric Suspension Seat (Cab only)
Storage Pocket
Vinyl Suspension Seat (Canopy only)
Skylight
Hydraulic Lockout – All Controls
Mounting Bosses for Front
Retractable High Visibility Seat Belt (75 mm/3 in)
Signaling/Warning Horn
Coat Hook
Interior Light (Cab only)
Cup Holder
Boom Light, Halogen (not available in all regions)
Storage Pocket
Utility Space for Mobile Phone
Skylight
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)
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
Rubber Belt (300 mm/11.8 in wide)
Dozer Blade
Dozer Blade Float
Tie Downs on Track Frame
Rubber Belt (300 mm/11.8 in wide)
Dozer Blade
Dozer Blade Float
Angle Blade
Tie Downs on Track Frame
One Piece Boom (2400 mm/94.5 in)
Standard Stick (1260 mm/49.6 in)
Front Shovel Capable
Front Shovel Capable – Pin-On
Thumb Ready (not available in all regions)
Certified Lifting Eye (optional in some regions)
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)
ROPS – ISO 12117-2:2008
TOPS – ISO 12117:1997
Top Guard ISO 10262:1998 (Level I)
12 Volt Battery
Software (machine and monitor)
Maintenance Free Battery
Lock Out/Tag Out Battery Disconnect
Signaling/Warning Horn
12 Volt Power Socket
12 Volt Battery
Software (machine and monitor)
Maintenance Free Battery
Signaling/Warning Horn
12 Volt Power Socket
Cab with Air Conditioning
Cab with Air Conditioning
Cab with Heater
Cab with Heater
Control Pattern Changer (optional in some regions)
Control Pattern Changer (optional in some regions)
No Travel Pedals and Hand Levers
No Travel Pedals and Hand Levers
Machine Security – Push to Start with Key Fob/Pass Code
Machine Security – Push to Start with Key Fob/Pass Code
Vinyl Non-Suspension Seat (Canopy only)
Vinyl Non-Suspension Seat (Canopy only)
Seat Belt Reminder System
LED Front Lights
LED Front Lights
LED Front and Rear Lights
LED Front and Rear Lights
LED Boom Light
LED Boom Light
Mirrors Left and Right
Mirrors Left and Right
Radio – Bluetooth®, Auxiliary, Microphone, USB (charging only) (Cab only)
Radio – Bluetooth®, Auxiliary, Microphone, USB (charging only) (Cab only)
Next Generation Advanced Monitor
– Touch Screen
– Site Reference System
– High Definition Camera Capable (IP68 and IP69K)
– Numeric Security Code
Steel Track (300 mm/11.8 in wide)
Steel Track (300 mm/11.8 in wide)
Angle Blade
Long Stick (1560 mm/61.4 in)
Long Stick (1560 mm/61.4 in)
Front Shovel Capable – Dual Lock Manual Coupler
Front Shovel Capable – Dual Lock Manual Coupler
Attachments including Couplers, Thumbs, Buckets, Augers and Hammers
Front Shovel Capable – Hydraulic Coupler
2nd Auxiliary Hydraulic Lines
2nd Auxiliary Hydraulic Lines
Boom Lowering Check Valve
Attachments including Couplers, Thumbs, Buckets, Augers and Hammers
Stick Lowering Check Valve
Boom Lowering Check Valve (Standard in Europe)
Hydraulic Quick Coupler Lines (not available in all regions)
Stick Lowering Check Valve (Standard in Europe)
Hydraulic Quick Coupler Lines (not available in all regions)
Front Shovel Capable – Hydraulic Coupler
Battery Disconnect
Product Link PL243 (regulations apply)
Product Link PL243 (regulations apply)
Product Link PLE643 (regulations apply)
Product Link PLE643 (regulations apply)
Travel Alarm (standard in some regions)
Travel Alarm (standard in some regions)
Polycarbonate Half Height Front Guard (Canopy only)
Polycarbonate Front Guard (ISO 10262:1998 Level I and EN356 P5A)
Guard, Canopy
Guard, Mesh
Bio Oil Capable
Eco Drain
Water Jacket Heater
Bio Oil Capable
Light Counterweight (100 kg/221 lb)
Eco Drain
Extra Counterweight (250 kg/551 lb)
Water Jacket Heater

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