Specifications

Overview

The Cat® 303E CR Mini Hydraulic Excavator delivers high performance, durability and versatility in a compact design to help you work in a variety of applications.

Boom Height in Shipping Position	1600 mm63 in
Gradeability (< 10 minutes Operation)	30°
Boom Swing Left	610 mm24 in
Boom Swing Right	825 mm32 in
Dig Depth	2980 mm117 in
Maximum Blade Depth	470 mm19 in
Maximum Blade Height	400 mm16 in
Maximum Dig Height	4250 mm167 in
Maximum Dump Clearance	2970 mm117 in
Maximum Reach	5040 mm198 in
Maximum Reach - Ground Level	4910 mm193 in
Overall Shipping Height	2500 mm98 in
Overall Shipping Length	5030 mm198 in
Overall Track Width	1550 mm61 in
Overall Undercarriage Length	2080 mm82 in
Swing Bearing Height	565 mm22 in
Tail Swing	775 mm31 in
Tail Swing with Extra Counterweight	890 mm35 in
Track Belt/Shoe Width	300 mm12 in
Vertical Wall	1750 mm69 in
Boom Height in Shipping Position	1590 mm63 in
Boom In Reach	2110 mm83 in
Boom Swing Left	610 mm24 in
Boom Swing Right	825 mm32 in
Dig Depth	2750 mm108 in
Maximum Blade Depth	472 mm19 in
Maximum Blade Height	402 mm16 in
Maximum Dig Height	4530 mm178 in
Maximum Dump Clearance	3150 mm124 in
Maximum Reach	4950 mm195 in
Maximum Reach - Ground Level	4810 mm189 in
Overall Shipping Height	2500 mm98 in
Overall Shipping Length	4470 mm176 in
Overall Track Width	1550 mm60 in
Overall Undercarriage Length	2080 mm82 in
Swing Bearing Height	565 mm22 in
Tail Swing	775 mm31 in
Tail Swing with Extra Counterweight	890 mm35 in
Track Belt/Shoe Width	300 mm12 in
Vertical Wall	1960 mm77 in
Auxiliary Circuit - Primary (186 bar/2,697 psi)	60 l/min15.9 gal/min
Auxiliary Circuit - Secondary (174 bar/2,523 psi)	27 l/min7.1 gal/min
Digging Force - Stick - Long	14.8 kN3327
Blade Down - Front	1170 kg2580 lb
Blade Down - Side	540 kg1191 lb
Blade Up - Front	650 kg1433 lb
Blade Up - Side	490 kg1080 lb
Note	*The above loads are in compliance with hydraulic excavator lift capacity rating standard ISO 10567:2007 and they do not exceed 87% of hydraulic lifting capacity or 75% of tipping capacity. The excavator bucket weight is not included on this chart. Lifting capacities are for machine with cab, optional counterweight and standard stick.
Blade Down - Front	740 kg1632 lb
Blade Down - Side	340 kg750 lb
Blade Up - Front	410 kg904 lb
Blade Up - Side	300 kg662 lb
Note	*The above loads are in compliance with hydraulic excavator lift capacity rating standard ISO 10567:2007 and they do not exceed 87% of hydraulic lifting capacity or 75% of tipping capacity. The excavator bucket weight is not included on this chart. Lifting capacities are for machine with cab, optional counterweight and standard stick.
Machine Overhang	0 mm0 in
Machine Overhang with Counterweight	115 mm5 in
Stick Length - Long	1560 mm61 in
Stick Length - Standard	1260 mm50 in
Gradeability - Continuous Operation	20°
Ground Pressure - Cab Long Stick	33 kPa4.8 psi
Ground Pressure - Cab Standard Stick	32.6 kPa4.7 psi
Ground Pressure - Canopy Long Stick	30.8 kPa4.5 psi
Ground Pressure - Canopy Standard Stick	30.4 kPa4.4 psi
Ground Pressure with Cab - Long Stick, Optional Counterweight	35.6 kPa5.2 psi
Ground Pressure with Cab - Standard Stick, Optional Counterweight	35.2 kPa5.1 psi
Ground Pressure with Canopy - Long Stick, Optional Counterweight	33.5 kPa4.9 psi
Ground Pressure with Canopy - Standard Stick, Optional Counterweight	33 kPa4.8 psi
Note	*Weight includes counterweight, rubber tracks, bucket, operator, full fuel and auxiliary lines.
Operating Weight with Cab - Long Stick	3309 kg7296 lb
Operating Weight with Cab - Long Stick, Optional Counterweight	3575 kg7883 lb
Operating Weight with Cab - Standard Stick	3267 kg7204 lb
Operating Weight with Cab - Standard Stick, Optional Counterweight	3533 kg7790 lb
Operating Weight with Canopy - Long Stick	3090 kg6813 lb
Operating Weight with Canopy - Long Stick, Optional Counterweight	3356 kg7400 lb
Operating Weight with Canopy - Standard Stick	3048 kg6721 lb
Operating Weight with Canopy - Standard Stick, Optional Counterweight	3314 kg7307 lb
Engine Model	Cat C1.3
Net Power	17.5 kW23.5 HP
Gross Power - ISO 14396	18.5 kW24.8 HP
Operating Weight - With Cab	3267 kg7204 lb
Operating Weight - With Canopy	3048 kg6721 lb
Bore	78 mm3.1 in
Displacement	1.3 l77 in³
Stroke	88 mm3.5 in
Maximum Traction Force - High Speed	15.2 kN3417
Maximum Traction Force - Low Speed	30.9 kN6947
Travel Speed - High	4.5 km/h2.8 mile/h
Travel Speed - Low	2.4 km/h1.5 mile/h
Digging Force - Bucket	28.4 kN6385
Digging Force - Stick - Standard	16.6 kN3732
Operating Pressure - Equipment	245 bar3553 psi
Operating Pressure - Swing	181 bar2625 psi
Operating Pressure - Travel	245 bar3553 psi
Pump Flow at 2,400 rpm	88 l/min23.1 gal/min
Machine Swing Speed	9 r/min9 r/min
Boom Swing - Left*	80°
Boom Swing - Right	50°
Note	*Automatic swing brake, spring applied, hydraulic release.
Width	1550 mm60 in
Height	335 mm13 in
Dig Depth	472 mm19 in
Lift Height	402 mm16 in
Cooling System	4.7 l1.2 gal (US)
Engine Oil	5.7 l1.5 gal (US)
Fuel Tank	45 l11.9 gal (US)
Hydraulic System	65 l17.2 gal (US)
Hydraulic Tank	47 l12.4 gal (US)
Gross Power	18.5 kW24.8 HP
Roll Over Protective Structure (ROPS)	ISO 12117-2:2008
Tip Over Protective Structure (TOPS)	ISO 12117:1997
Top Guard	ISO 10262:1998 (Level I)
Rated Net Power - 2,400 rpm - ISO 9249/EEC 80/1269	17.5 kW23.5 HP
Type	Load Sensing Hydraulics with Variable Displacement Piston Pump
Number of Carrier Rollers	1
Number of Track Rollers	4
Track Roller Type	Center Flange
Note	Weight includes counterweight, rubber tracks, bucket, operator, full fuel and auxiliary lines.

303E CR Standard Equipment

STANDARD EQUIPMENT
- 1-way and 2-way (combined function) auxiliary hydraulic lines
- Adjustable armrests
- Alternator
- Automatic swing park brake
- Automatic two speed travel
- Auxiliary line quick disconnects
- Boom cylinder guard
- Cab mounted work light
- Canopy with Top Guard ISO 10262:1998 (Level 1), ROPS ISO 12117-2:2008 and TOPS ISO 12117:1997
- Coat hook
- Cup holder
- Control pattern changer
- Dozer blade with float function
- Foot travel pedals
- Gauges or indicators for fuel level engine coolant temperature, hour meter, engine oil pressure, air cleaner, alternator and glow plugs, service interval
- Horn
- Hydraulic oil cooler
- Lifting eye on bucket linkage (standard equipment for all regions except Europe)
- Lockable storage box
- Low maintenance linkage pin joints
- Maintenance free battery
- Product Link™
- Rubber track
- Retractable seatbelt
- Standard stick
- Suspension seat, vinyl covered
- “Thumb ready” sticks
- Travel alarm (optional in Europe)

303E CR Optional Equipment

OPTIONAL EQUIPMENT
- Beacon socket for canopy machines
- Boom mounted light
- Cab, Top Guard ISO 10262:1998 (Level 1), ROPS ISO 12117-2:2008 and TOPS ISO 12117:1997
- High back suspension seat, fabric covered
- Mechanical quick coupler
- Mirrors for cab and canopy
- Steel track

A14B

Optimal Hydraulic Flow
42-83 L/min (11-22 gpm)

Overall Height
958 mm38 in

Weight
120 kg264 lb

A19B

Optimal Hydraulic Flow
42-83 L/min (11-22 gpm)

Overall Height
875 mm35 in

Weight
94 kg207 lb

A14B

Optimal Hydraulic Flow
42-83 L/min (11-22 gpm)

Overall Height
947 mm37 in

Weight
117 kg257 lb

A19B

Optimal Hydraulic Flow
42-83 L/min (11-22 gpm)

Overall Height
875 mm35 in

Weight
92 kg205 lb

305 mm (12 in)

Width
305 mm12 in

Rated Capacity
48.1 l1.7 ft³

Weight
65 kg143.3 lb

406 mm (16 in)

Width
406 mm16 in

Rated Capacity
70.8 l2.5 ft³

Weight
74 kg163.1 lb

457 mm (18 in)

Width
457 mm18 in

Rated Capacity
82.1 l2.9 ft³

Weight
82 kg180.8 lb

508 mm (20 in)

Width
508 mm20 in

Rated Capacity
93.4 l3.3 ft³

Weight
87 kg191.8 lb

619 mm (24 in)

Width
619 mm24.4 in

Rated Capacity
118.9 l4.2 ft³

Weight
98 kg216.1 lb

762 mm (30 in)

Width
762 mm30 in

Rated Capacity
158.6 l5.6 ft³

Weight
117 kg257.9 lb

1000 mm (40 in)

Interface Type
Pin On

Capacity
135.9 l4.8 ft³

Width
1000 mm39.4 in

1400 mm (55 in)

Interface Type
Pin On

Capacity
6.96 ft³197.1 l

Width
1400 mm55.1 in

1200 mm (47 in)

Interface Type
Pin On

Capacity
5.9 ft³167.1 l

Width
1200 mm47.2 in

1200 mm (47 in)

Width
1200 mm47.2 in

Rated Capacity
231.9 l8.19 ft³

Weight
172.8 kg380.9 lb

1200 mm (47 in)

Width
1200 mm47.2 in

Rated Capacity
158.6 m³5.6 ft³

Weight
162.3 kg357.8 lb

CW-05

Weight
25 kg55 lb

Width
175 mm7 in

Load Rating, Hoisting Hook
2 ton (US)2.2 ton (US)

490 mm (19 in)

Tip Radius
650 mm26 in

Weight
45 kg99 lb

Overall Length
659 mm26 in

Specifications

Boom Height in Shipping Position	1600 mm63 in
Gradeability (< 10 minutes Operation)	30°
Boom Swing Left	610 mm24 in
Boom Swing Right	825 mm32 in
Dig Depth	2980 mm117 in
Maximum Blade Depth	470 mm19 in
Maximum Blade Height	400 mm16 in
Maximum Dig Height	4250 mm167 in
Maximum Dump Clearance	2970 mm117 in
Maximum Reach	5040 mm198 in
Maximum Reach - Ground Level	4910 mm193 in
Overall Shipping Height	2500 mm98 in
Overall Shipping Length	5030 mm198 in
Overall Track Width	1550 mm61 in
Overall Undercarriage Length	2080 mm82 in
Swing Bearing Height	565 mm22 in
Tail Swing	775 mm31 in
Tail Swing with Extra Counterweight	890 mm35 in
Track Belt/Shoe Width	300 mm12 in
Vertical Wall	1750 mm69 in
Boom Height in Shipping Position	1590 mm63 in
Boom In Reach	2110 mm83 in
Boom Swing Left	610 mm24 in
Boom Swing Right	825 mm32 in
Dig Depth	2750 mm108 in
Maximum Blade Depth	472 mm19 in
Maximum Blade Height	402 mm16 in
Maximum Dig Height	4530 mm178 in
Maximum Dump Clearance	3150 mm124 in
Maximum Reach	4950 mm195 in
Maximum Reach - Ground Level	4810 mm189 in
Overall Shipping Height	2500 mm98 in
Overall Shipping Length	4470 mm176 in
Overall Track Width	1550 mm60 in
Overall Undercarriage Length	2080 mm82 in
Swing Bearing Height	565 mm22 in
Tail Swing	775 mm31 in
Tail Swing with Extra Counterweight	890 mm35 in
Track Belt/Shoe Width	300 mm12 in
Vertical Wall	1960 mm77 in
Auxiliary Circuit - Primary (186 bar/2,697 psi)	60 l/min15.9 gal/min
Auxiliary Circuit - Secondary (174 bar/2,523 psi)	27 l/min7.1 gal/min
Digging Force - Stick - Long	14.8 kN3327
Blade Down - Front	1170 kg2580 lb
Blade Down - Side	540 kg1191 lb
Blade Up - Front	650 kg1433 lb
Blade Up - Side	490 kg1080 lb
Note	*The above loads are in compliance with hydraulic excavator lift capacity rating standard ISO 10567:2007 and they do not exceed 87% of hydraulic lifting capacity or 75% of tipping capacity. The excavator bucket weight is not included on this chart. Lifting capacities are for machine with cab, optional counterweight and standard stick.
Blade Down - Front	740 kg1632 lb
Blade Down - Side	340 kg750 lb
Blade Up - Front	410 kg904 lb
Blade Up - Side	300 kg662 lb
Note	*The above loads are in compliance with hydraulic excavator lift capacity rating standard ISO 10567:2007 and they do not exceed 87% of hydraulic lifting capacity or 75% of tipping capacity. The excavator bucket weight is not included on this chart. Lifting capacities are for machine with cab, optional counterweight and standard stick.
Machine Overhang	0 mm0 in
Machine Overhang with Counterweight	115 mm5 in
Stick Length - Long	1560 mm61 in
Stick Length - Standard	1260 mm50 in
Gradeability - Continuous Operation	20°
Ground Pressure - Cab Long Stick	33 kPa4.8 psi
Ground Pressure - Cab Standard Stick	32.6 kPa4.7 psi
Ground Pressure - Canopy Long Stick	30.8 kPa4.5 psi
Ground Pressure - Canopy Standard Stick	30.4 kPa4.4 psi
Ground Pressure with Cab - Long Stick, Optional Counterweight	35.6 kPa5.2 psi
Ground Pressure with Cab - Standard Stick, Optional Counterweight	35.2 kPa5.1 psi
Ground Pressure with Canopy - Long Stick, Optional Counterweight	33.5 kPa4.9 psi
Ground Pressure with Canopy - Standard Stick, Optional Counterweight	33 kPa4.8 psi
Note	*Weight includes counterweight, rubber tracks, bucket, operator, full fuel and auxiliary lines.
Operating Weight with Cab - Long Stick	3309 kg7296 lb
Operating Weight with Cab - Long Stick, Optional Counterweight	3575 kg7883 lb
Operating Weight with Cab - Standard Stick	3267 kg7204 lb
Operating Weight with Cab - Standard Stick, Optional Counterweight	3533 kg7790 lb
Operating Weight with Canopy - Long Stick	3090 kg6813 lb
Operating Weight with Canopy - Long Stick, Optional Counterweight	3356 kg7400 lb
Operating Weight with Canopy - Standard Stick	3048 kg6721 lb
Operating Weight with Canopy - Standard Stick, Optional Counterweight	3314 kg7307 lb
Engine Model	Cat C1.3
Net Power	17.5 kW23.5 HP
Gross Power - ISO 14396	18.5 kW24.8 HP
Operating Weight - With Cab	3267 kg7204 lb
Operating Weight - With Canopy	3048 kg6721 lb
Bore	78 mm3.1 in
Displacement	1.3 l77 in³
Stroke	88 mm3.5 in
Maximum Traction Force - High Speed	15.2 kN3417
Maximum Traction Force - Low Speed	30.9 kN6947
Travel Speed - High	4.5 km/h2.8 mile/h
Travel Speed - Low	2.4 km/h1.5 mile/h
Digging Force - Bucket	28.4 kN6385
Digging Force - Stick - Standard	16.6 kN3732
Operating Pressure - Equipment	245 bar3553 psi
Operating Pressure - Swing	181 bar2625 psi
Operating Pressure - Travel	245 bar3553 psi
Pump Flow at 2,400 rpm	88 l/min23.1 gal/min
Machine Swing Speed	9 r/min9 r/min
Boom Swing - Left*	80°
Boom Swing - Right	50°
Note	*Automatic swing brake, spring applied, hydraulic release.
Width	1550 mm60 in
Height	335 mm13 in
Dig Depth	472 mm19 in
Lift Height	402 mm16 in
Cooling System	4.7 l1.2 gal (US)
Engine Oil	5.7 l1.5 gal (US)
Fuel Tank	45 l11.9 gal (US)
Hydraulic System	65 l17.2 gal (US)
Hydraulic Tank	47 l12.4 gal (US)
Gross Power	18.5 kW24.8 HP
Roll Over Protective Structure (ROPS)	ISO 12117-2:2008
Tip Over Protective Structure (TOPS)	ISO 12117:1997
Top Guard	ISO 10262:1998 (Level I)
Rated Net Power - 2,400 rpm - ISO 9249/EEC 80/1269	17.5 kW23.5 HP
Type	Load Sensing Hydraulics with Variable Displacement Piston Pump
Number of Carrier Rollers	1
Number of Track Rollers	4
Track Roller Type	Center Flange
Note	Weight includes counterweight, rubber tracks, bucket, operator, full fuel and auxiliary lines.

Equipment

303E CR Standard Equipment

STANDARD EQUIPMENT
- 1-way and 2-way (combined function) auxiliary hydraulic lines
- Adjustable armrests
- Alternator
- Automatic swing park brake
- Automatic two speed travel
- Auxiliary line quick disconnects
- Boom cylinder guard
- Cab mounted work light
- Canopy with Top Guard ISO 10262:1998 (Level 1), ROPS ISO 12117-2:2008 and TOPS ISO 12117:1997
- Coat hook
- Cup holder
- Control pattern changer
- Dozer blade with float function
- Foot travel pedals
- Gauges or indicators for fuel level engine coolant temperature, hour meter, engine oil pressure, air cleaner, alternator and glow plugs, service interval
- Horn
- Hydraulic oil cooler
- Lifting eye on bucket linkage (standard equipment for all regions except Europe)
- Lockable storage box
- Low maintenance linkage pin joints
- Maintenance free battery
- Product Link™
- Rubber track
- Retractable seatbelt
- Standard stick
- Suspension seat, vinyl covered
- “Thumb ready” sticks
- Travel alarm (optional in Europe)

303E CR Optional Equipment

OPTIONAL EQUIPMENT
- Beacon socket for canopy machines
- Boom mounted light
- Cab, Top Guard ISO 10262:1998 (Level 1), ROPS ISO 12117-2:2008 and TOPS ISO 12117:1997
- High back suspension seat, fabric covered
- Mechanical quick coupler
- Mirrors for cab and canopy
- Steel track