Mini Excavators 303.5 CR

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Key Specs

Net Power: 23.6 hp; 17.6 kW

Operating Weight: 9239 lb; 4190 kg

Dig Depth: 122.4 in; 3110 mm

303.5 CR
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Overview

The Performance Upgraded Cat® 303.5 CR Mini Excavator

The upgraded 303.5 CR delivers power and performance in a wide range of applications. Faster transient speeds, coupled with exclusive features like stick steer joystick travel get you moving quickly and comfortably so you can focus on the task at hand.

Benefits

Upgraded Performance

25% higher transient speeds result in 35% more productivity*
*Up to 25% and 35%, are against the previous model and based upon application, conditions and temperatures.

Cat® Exclusive Features

Stick steer joystick travel, cruise control, Sealed and pressurized cab with AC, Tilt-cab service access

Low Owning and Operating Costs

Easy service and repair access and extended service intervals and VisionLink™ Telematics

Features At A Glance

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.

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.

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!

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.

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.

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.

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.

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)

Specifications Standard Equipment Optional Equipment

Product Specifications for 303.5 CR

Engine

Net Power	23.6 hp 17.6 kW
Engine Model	C1.7 C1.7
Net Power @ 2,200 rpm - U.S. EPA Tier 4 Final/EU Stage V - ISO 9249/EEC 80/1269	23.6 hp 17.6 kW
Net Power - ISO 9249	24.7 hp 18.4 kW
Bore	3.3 in 84 mm
Stroke	3.9 in 100 mm
Displacement	104 in³ 1.7 l
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.
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.
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. 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.

Weights

Operating Weight	9239 lb 4190 kg
Minimum Operating Weight with Canopy*	7673 lb 3480 kg
Maximum Operating Weight with Canopy**	8930 lb 4050 kg
Minimum Operating Weight with Cab*	7982 lb 3620 kg
Maximum Operating Weight with Cab**	9239 lb 4190 kg
EU: CE Plate Weight with Canopy***	7784 lb 3530 kg
EU: CE Plate Weight with Cab***	8004 lb 3630 kg
Note (1)	Minimum Weight is based on fixed rubber tracks, operator, full fuel tank, standard stick, blade, no bucket and extra counterweight. 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. 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. *CE Plate Weight is based on the most common EU configuration. Includes 75 kg (165 lb) operator and full fuel tank and excludes bucket.

Dimensions - Long Stick

Dig Depth	122.4 in 3110 mm
Vertical Wall	94.1 in 2390 mm
Maximum Reach - Ground Level	211.8 in 5380 mm
Maximum Reach	216.9 in 5510 mm
Maximum Dig Height	197.6 in 5020 mm
Maximum Dump Clearance	141.7 in 3600 mm
Boom In Reach	73.2 in 1860 mm
Tail Swing without Counterweight	35 in 890 mm
Tail Swing - with Extra Counterweight	39.6 in 1005 mm
Maximum Blade Depth	21.1 in 535 mm
Maximum Blade Height	15.2 in 385 mm
Boom Height - Shipping Position	68.9 in 1750 mm
O/A Shipping Height	97.6 in 2480 mm
Swing Bearing - Height	22.2 in 565 mm
O/A Undercarriage Length	87.4 in 2220 mm
Overall Shipping Length*	190.9 in 4850 mm
Boom Swing - Right	34.3 ° 870 mm
Boom Swing - Left	640 mm 25.2 °
Track Belt/Shoe Width	11.8 in 300 mm
Track Width	70.1 in 1780 mm
Minimum Ground Clearance Below Undercarriage	12.2 in 310 mm
Stick Length	61.4 in 1560 mm
Note	Overall Shipping Length depends on blade position during shipment. Overall Shipping Length depends on blade position during shipment.

Weight Increase from Minimum Configuration

Cab	309 lb 140 kg
Counterweight	221 lb 100 kg
Extra Counterweight	551 lb 250 kg
Long Stick	44 lb 20 kg
Steel Tracks	287 lb 130 kg
Angle Blade	353 lb 160 kg

Travel System

Travel Speed - High	2.8 mile/h 4.5 km/h
Travel Speed - Low	1.6 mile/h 2.6 km/h
Maximum Traction Force - High Speed	3799 lbf 16.9 kN
Maximum Traction Force - Low Speed	6969 lbf 31 kN
Ground Pressure - Minimum Weight	4.3 psi 29.6 kPa
Ground Pressure - Maximum Weight	5.2 psi 35.7 kPa
Gradeability - Maximum	30 degrees 30 degrees

Service Refill Capacities

Cooling System	1.8 gal (US) 7 l
Engine Oil	1.6 gal (US) 6 l
Fuel Tank	11.9 gal (US) 45 l
Hydraulic Tank	5.3 gal (US) 20 l
Hydraulic System	11.9 gal (US) 45 l

Hydraulic System

Type	Load Sensing Hydraulics with Variable Displacement Piston Pump Load Sensing Hydraulics with Variable Displacement Piston Pump
Pump Flow at 2,400 rpm	26 gpm 100 L/min
Operating Pressure - Equipment	3553 psi 245 bar
Operating Pressure - Travel	3553 psi 245 bar
Operating Pressure - Swing	2625 psi 181 bar
Auxiliary Circuit - Primary - Flow	18 gpm 70 L/min
Auxiliary Circuit - Primary - Pressure	3553 psi 245 bar
Auxiliary Circuit - Secondary - Flow	7 gpm 25 L/min
Auxiliary Circuit - Secondary - Pressure	3553 psi 245 bar
Digging Force - Stick - Standard	4249 lbf 18.9 kN
Digging Force - Stick - Long	3799 lbf 16.9 kN
Digging Force - Bucket	7419 lbf 33 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.

Swing System

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

Blade

Width	70.1 in 1780 mm
Height	13.8 in 350 mm

Certification - Cab and Canopy

Roll Over Protective Structure (ROPS)	ISO 12117-2:2008 ISO 12117-2:2008
Tip Over Protective Structure (TOPS)	ISO 12117:1997 ISO 12117:1997
Top Guard	ISO 10262:1998 (Level I) ISO 10262:1998 (Level I)

Dimensions - Standard Stick

Dig Depth	110.6 in 2810 mm
Vertical Wall	88.6 in 2250 mm
Maximum Reach - Ground Level	202 in 5130 mm
Maximum Reach	207.5 in 5270 mm
Maximum Dig Height	193.7 in 4920 mm
Maximum Dump Clearance	137.4 in 3490 mm
Boom In Reach	69.3 in 1760 mm
Tail Swing without Counterweight	35 in 890 mm
Tail Swing with Extra Counterweight	39.6 in 1005 mm
Maximum Blade Depth	21.1 in 535 mm
Maximum Blade Height	15.2 in 385 mm
Boom Height - Shipping Position	59.8 in 1520 mm
O/A Shipping Height	97.6 in 2480 mm
Swing Bearing - Height	22.2 in 565 mm
O/A Undercarriage Length	87.4 in 2220 mm
Overall Shipping Length*	189 in 4800 mm
Boom Swing - Right	34.3 ° 870 mm
Boom Swing - Left	25.2 ° 640 mm
Track Belt/Shoe Width	11.8 in 300 mm
Minimum Ground Clearance Below Undercarriage	12.2 in 310 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.

Air Conditioning System

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 (1.65 lb), 0.90 kg (1.98 lb) or 1 kg (2.20 lb) of refrigerant which has a CO2 equivalent of 1.430 metric tonnes (1.576 tons) for R134a and 0.001 tonnes (0.001 tons) for R1234yf (Europe). 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 (1.65 lb), 0.90 kg (1.98 lb) or 1 kg (2.20 lb) of refrigerant which has a CO2 equivalent of 1.430 metric tonnes (1.576 tons) for R134a and 0.001 tonnes (0.001 tons) for R1234yf (Europe).

Sound

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

Sustainability

Recyclability

95% 95%

303.5 CR Standard Equipment

ENGINE

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

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

OPERATOR ENVIRONMENT

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

UNDERCARRIAGE

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

BOOM, STICK AND LINKAGES

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)

GUARDING

ROPS – ISO 12117-2:2008

TOPS – ISO 12117:1997

Top Guard ISO 10262:1998 (Level I)

ELECTRICAL

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

303.5 CR Optional Equipment

OPERATOR ENVIRONMENT

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

UNDERCARRIAGE

Steel Track (300 mm/11.8 in wide)

Steel Track (300 mm/11.8 in wide)

Angle Blade

BOOM, STICK AND LINKAGES

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

ELECTRICAL

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)

GUARDING

Polycarbonate Half Height Front Guard (Canopy only)

Polycarbonate Front Guard (ISO 10262:1998 Level I and EN356 P5A)

Guard, Canopy

Guard, Mesh

OTHER

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

Product Specifications for 303.5 CR

Download Print

Engine

Net Power	23.6 hp 17.6 kW
Engine Model	C1.7 C1.7
Net Power @ 2,200 rpm - U.S. EPA Tier 4 Final/EU Stage V - ISO 9249/EEC 80/1269	23.6 hp 17.6 kW
Net Power - ISO 9249	24.7 hp 18.4 kW
Bore	3.3 in 84 mm
Stroke	3.9 in 100 mm
Displacement	104 in³ 1.7 l
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.
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.
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. 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.

Weights

Operating Weight	9239 lb 4190 kg
Minimum Operating Weight with Canopy*	7673 lb 3480 kg
Maximum Operating Weight with Canopy**	8930 lb 4050 kg
Minimum Operating Weight with Cab*	7982 lb 3620 kg
Maximum Operating Weight with Cab**	9239 lb 4190 kg
EU: CE Plate Weight with Canopy***	7784 lb 3530 kg
EU: CE Plate Weight with Cab***	8004 lb 3630 kg
Note (1)	Minimum Weight is based on fixed rubber tracks, operator, full fuel tank, standard stick, blade, no bucket and extra counterweight. 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. 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. *CE Plate Weight is based on the most common EU configuration. Includes 75 kg (165 lb) operator and full fuel tank and excludes bucket.

Dimensions - Long Stick

Dig Depth	122.4 in 3110 mm
Vertical Wall	94.1 in 2390 mm
Maximum Reach - Ground Level	211.8 in 5380 mm
Maximum Reach	216.9 in 5510 mm
Maximum Dig Height	197.6 in 5020 mm
Maximum Dump Clearance	141.7 in 3600 mm
Boom In Reach	73.2 in 1860 mm
Tail Swing without Counterweight	35 in 890 mm
Tail Swing - with Extra Counterweight	39.6 in 1005 mm
Maximum Blade Depth	21.1 in 535 mm
Maximum Blade Height	15.2 in 385 mm
Boom Height - Shipping Position	68.9 in 1750 mm
O/A Shipping Height	97.6 in 2480 mm
Swing Bearing - Height	22.2 in 565 mm
O/A Undercarriage Length	87.4 in 2220 mm
Overall Shipping Length*	190.9 in 4850 mm
Boom Swing - Right	34.3 ° 870 mm
Boom Swing - Left	640 mm 25.2 °
Track Belt/Shoe Width	11.8 in 300 mm
Track Width	70.1 in 1780 mm
Minimum Ground Clearance Below Undercarriage	12.2 in 310 mm
Stick Length	61.4 in 1560 mm
Note	Overall Shipping Length depends on blade position during shipment. Overall Shipping Length depends on blade position during shipment.

Weight Increase from Minimum Configuration

Cab	309 lb 140 kg
Counterweight	221 lb 100 kg
Extra Counterweight	551 lb 250 kg
Long Stick	44 lb 20 kg
Steel Tracks	287 lb 130 kg
Angle Blade	353 lb 160 kg

Travel System

Travel Speed - High	2.8 mile/h 4.5 km/h
Travel Speed - Low	1.6 mile/h 2.6 km/h
Maximum Traction Force - High Speed	3799 lbf 16.9 kN
Maximum Traction Force - Low Speed	6969 lbf 31 kN
Ground Pressure - Minimum Weight	4.3 psi 29.6 kPa
Ground Pressure - Maximum Weight	5.2 psi 35.7 kPa
Gradeability - Maximum	30 degrees 30 degrees

Service Refill Capacities

Cooling System	1.8 gal (US) 7 l
Engine Oil	1.6 gal (US) 6 l
Fuel Tank	11.9 gal (US) 45 l
Hydraulic Tank	5.3 gal (US) 20 l
Hydraulic System	11.9 gal (US) 45 l

Hydraulic System

Type	Load Sensing Hydraulics with Variable Displacement Piston Pump Load Sensing Hydraulics with Variable Displacement Piston Pump
Pump Flow at 2,400 rpm	26 gpm 100 L/min
Operating Pressure - Equipment	3553 psi 245 bar
Operating Pressure - Travel	3553 psi 245 bar
Operating Pressure - Swing	2625 psi 181 bar
Auxiliary Circuit - Primary - Flow	18 gpm 70 L/min
Auxiliary Circuit - Primary - Pressure	3553 psi 245 bar
Auxiliary Circuit - Secondary - Flow	7 gpm 25 L/min
Auxiliary Circuit - Secondary - Pressure	3553 psi 245 bar
Digging Force - Stick - Standard	4249 lbf 18.9 kN
Digging Force - Stick - Long	3799 lbf 16.9 kN
Digging Force - Bucket	7419 lbf 33 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.

Swing System

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

Blade

Width	70.1 in 1780 mm
Height	13.8 in 350 mm

Certification - Cab and Canopy

Roll Over Protective Structure (ROPS)	ISO 12117-2:2008 ISO 12117-2:2008
Tip Over Protective Structure (TOPS)	ISO 12117:1997 ISO 12117:1997
Top Guard	ISO 10262:1998 (Level I) ISO 10262:1998 (Level I)

Dimensions - Standard Stick

Dig Depth	110.6 in 2810 mm
Vertical Wall	88.6 in 2250 mm
Maximum Reach - Ground Level	202 in 5130 mm
Maximum Reach	207.5 in 5270 mm
Maximum Dig Height	193.7 in 4920 mm
Maximum Dump Clearance	137.4 in 3490 mm
Boom In Reach	69.3 in 1760 mm
Tail Swing without Counterweight	35 in 890 mm
Tail Swing with Extra Counterweight	39.6 in 1005 mm
Maximum Blade Depth	21.1 in 535 mm
Maximum Blade Height	15.2 in 385 mm
Boom Height - Shipping Position	59.8 in 1520 mm
O/A Shipping Height	97.6 in 2480 mm
Swing Bearing - Height	22.2 in 565 mm
O/A Undercarriage Length	87.4 in 2220 mm
Overall Shipping Length*	189 in 4800 mm
Boom Swing - Right	34.3 ° 870 mm
Boom Swing - Left	25.2 ° 640 mm
Track Belt/Shoe Width	11.8 in 300 mm
Minimum Ground Clearance Below Undercarriage	12.2 in 310 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.

Air Conditioning System

Air Conditioning

Sound

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

Sustainability

Recyclability

95% 95%

303.5 CR Standard Equipment

ENGINE

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

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

OPERATOR ENVIRONMENT

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

UNDERCARRIAGE

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

BOOM, STICK AND LINKAGES

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)

GUARDING

ROPS – ISO 12117-2:2008

TOPS – ISO 12117:1997

Top Guard ISO 10262:1998 (Level I)

ELECTRICAL

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

303.5 CR Optional Equipment

OPERATOR ENVIRONMENT

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

UNDERCARRIAGE

Steel Track (300 mm/11.8 in wide)

Steel Track (300 mm/11.8 in wide)

Angle Blade

BOOM, STICK AND LINKAGES

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

ELECTRICAL

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)

GUARDING

Polycarbonate Half Height Front Guard (Canopy only)

Polycarbonate Front Guard (ISO 10262:1998 Level I and EN356 P5A)

Guard, Canopy

Guard, Mesh

OTHER

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

See how 303.5 CR compares against frequently compared products.

Excavators

Selected

303.5 CR

Net Power: 23.6 hp; 17.6 kW
Operating Weight: 9239 lb; 4190 kg
Dig Depth: 122.4 in; 3110 mm

Excavators

303 CR

Net Power: 23.6 hp; 17.6 kW
Operating Weight: 7817 lb; 3545 kg
Dig Depth: 116.1 in; 2950 mm

View Details

Excavators

304

Net Power: 45 hp; 33.6 kW
Operating Weight: 9867 lb; 4475 kg
Dig Depth: 138.2 in; 3510 mm

View Details

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303.5 CR Mini Hydraulic Excavator

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303.5 CR Mini Hydraulic Excavator

Introducing the Next Generation Cat 302.7 CR, 303 CR and 303.5 CR Mini Excavators

Overview of the Next Generation Cat 302.7 CR, 303 CR and 303.5 CR Mini Excavators

Standard Monitor on the Next Generation Cat Mini Excavators

How to Select the Correct 3 Ton Cat Next Generation Mini Excavator

Introducing the Next Generation Cat 302.7 CR, 303 CR and 303.5 CR Mini Excavators

Overview of the Next Generation Cat 302.7 CR, 303 CR and 303.5 CR Mini Excavators

Standard Monitor on the Next Generation Cat Mini Excavators

How to Select the Correct 3 Ton Cat Next Generation Mini Excavator

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Compatible Technology and Services

Leverage Caterpillar connected data and security principles to improve efficiencies, increase productivity and make your business more profitable.

Equipment Management

VisionLink™

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VisionLink™ is a cloud-based software application that takes the guesswork out of fleet management with key insights to maximize performance - regardless of fleet size or equipment manufacturer. Receive equipment data seamlessly to your desktop or mobile device, all from a convenient centralized solution to make informed decisions at every turn.

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VisionLink™ is a cloud-based software application that takes the guesswork out of fleet management with key insights to maximize performance - regardless of fleet size or equipment manufacturer. Receive equipment data seamlessly to your desktop or mobile device, all from a convenient centralized solution to make informed decisions at every turn.

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Mini Excavators 303.5 CR

Overview

The Performance Upgraded Cat® 303.5 CR Mini Excavator

Benefits

Upgraded Performance

Cat® Exclusive Features

Low Owning and Operating Costs

Features At A Glance

Product Specifications for 303.5 CR

Engine

Weights

Dimensions - Long Stick

Weight Increase from Minimum Configuration

Travel System

Service Refill Capacities

Hydraulic System

Swing System

Blade

Certification - Cab and Canopy

Dimensions - Standard Stick

Air Conditioning System

Sound

Sustainability

303.5 CR Standard Equipment

ENGINE

HYDRAULICS

OPERATOR ENVIRONMENT

UNDERCARRIAGE

BOOM, STICK AND LINKAGES

GUARDING

ELECTRICAL

303.5 CR Optional Equipment

OPERATOR ENVIRONMENT

UNDERCARRIAGE

BOOM, STICK AND LINKAGES

ELECTRICAL

GUARDING

OTHER

Product Specifications for 303.5 CR

Engine

Weights

Dimensions - Long Stick

Weight Increase from Minimum Configuration

Travel System

Service Refill Capacities

Hydraulic System

Swing System

Blade

Certification - Cab and Canopy

Dimensions - Standard Stick

Air Conditioning System

Sound

Sustainability

303.5 CR Standard Equipment

ENGINE

HYDRAULICS

OPERATOR ENVIRONMENT

UNDERCARRIAGE

BOOM, STICK AND LINKAGES

GUARDING

ELECTRICAL

303.5 CR Optional Equipment

OPERATOR ENVIRONMENT

UNDERCARRIAGE

BOOM, STICK AND LINKAGES

ELECTRICAL

GUARDING

OTHER

See how 303.5 CR compares against frequently compared products.

Tools And Expert Help At Every Turn

Find Dealer

Payment Calculator

Current Offers

Rental Options

Used Options

assignment Product Brochures and More Are Ready to Download!

Media Gallery

Photos

Videos

360 View

Product Brochures and More Are Ready to Download!