303E CR Mini Hydraulic Excavator

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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.

Engine

Net Power
23.5 HP
Engine Model
Cat C1.3
Gross Power
24.8 HP
Rated Net Power - 2,400 rpm - ISO 9249/EEC 80/1269
23.5 HP
Displacement
77 in³
Bore
3.1 in
Stroke
3.5 in
Note
Cat C1.3 engine meets U.S. EPA Tier 4 Final/EU Stage V emission standards.
Gross Power - ISO 14396
24.8 HP

Weights

Operating Weight - With Cab
7204 lb
Note
Weight includes counterweight, rubber tracks, bucket, operator, full fuel and auxiliary lines.
Operating Weight - With Canopy
6721 lb

Dimensions (Approximate) - Long Stick

Dig Depth
117 in
Boom Swing Right
32 in
Maximum Dig Height
167 in
Boom In Reach
79 in
Vertical Wall
69 in
Tail Swing
31 in
Maximum Reach - Ground Level
193 in
Overall Shipping Height
98 in
Overall Undercarriage Length
82 in
Maximum Reach
198 in
Track Belt/Shoe Width
12 in
Maximum Blade Depth
19 in
Tail Swing with Extra Counterweight
35 in
Maximum Blade Height
16 in
Overall Track Width
61 in
Swing Bearing Height
22 in
Boom Height in Shipping Position
63 in
Boom Swing Left
24 in
Maximum Dump Clearance
117 in
Overall Shipping Length
198 in

Swing System

Machine Swing Speed
9 r/min
Note
*Automatic swing brake, spring applied, hydraulic release.
Boom Swing - Right
50°
Boom Swing - Left*
80°

Blade

Width
60 in
Height
13 in
Dig Depth
19 in
Lift Height
16 in

Weights*

Operating Weight with Cab - Standard Stick
7204 lb
Operating Weight with Canopy - Long Stick
6813 lb
Operating Weight with Canopy - Long Stick, Optional Counterweight
7400 lb
Operating Weight with Canopy - Standard Stick
6721 lb
Operating Weight with Cab - Standard Stick, Optional Counterweight
7790 lb
Operating Weight with Cab - Long Stick
7296 lb
Note
*Weight includes counterweight, rubber tracks, bucket, operator, full fuel and auxiliary lines.
Operating Weight with Canopy - Standard Stick, Optional Counterweight
7307 lb
Operating Weight with Cab - Long Stick, Optional Counterweight
7883 lb

Lift Capacities at Ground Level* - Lift Point Radius: 3000 mm (9'8")

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. Liftin
Blade Up - Front
1433 lb
Blade Up - Side
1080 lb
Blade Down - Front
2580 lb
Blade Down - Side
1191 lb

Dimensions (Approximate) - Standard Stick

Tail Swing with Extra Counterweight
35 in
Boom Swing Right
32 in
Boom Swing Left
24 in
Overall Undercarriage Length
82 in
Dig Depth
108 in
Maximum Dig Height
178 in
Overall Track Width
60 in
Track Belt/Shoe Width
12 in
Maximum Dump Clearance
124 in
Tail Swing
31 in
Maximum Blade Height
16 in
Maximum Blade Depth
19 in
Boom Height in Shipping Position
63 in
Swing Bearing Height
22 in
Maximum Reach
195 in
Overall Shipping Height
98 in
Vertical Wall
77 in
Overall Shipping Length
176 in
Maximum Reach - Ground Level
189 in
Boom In Reach
83 in

Operating Specifications

Stick Length - Long
61 in
Machine Overhang
0 in
Machine Overhang with Counterweight
5 in
Stick Length - Standard
50 in

Service Refill Capacities

Fuel Tank
11.9 gal (US)
Hydraulic System
17.2 gal (US)
Cooling System
1.2 gal (US)
Hydraulic Tank
12.4 gal (US)
Engine Oil
1.5 gal (US)

Hydraulic System

Auxiliary Circuit - Secondary (174 bar/2,523 psi)
7.1 gal/min
Type
Load Sensing Hydraulics with Variable Displacement Piston Pump
Operating Pressure - Equipment
3553 psi
Digging Force - Stick - Standard
3732 lbf
Operating Pressure - Travel
3553 psi
Pump Flow at 2,400 rpm
23.1 gal/min
Digging Force - Bucket
6385 lbf
Operating Pressure - Swing
2625 psi
Digging Force - Stick - Long
3327 lbf
Auxiliary Circuit - Primary (186 bar/2,697 psi)
15.9 gal/min

Lift Capacities at Ground Level* - Lift Point Radius: 4000 mm (13'1")

Blade Down - Side
750 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. Liftin
Blade Down - Front
1632 lb
Blade Up - Side
662 lb
Blade Up - Front
904 lb

Travel System

Ground Pressure - Canopy Standard Stick
4.4 psi
Ground Pressure with Canopy - Long Stick, Optional Counterweight
4.9 psi
Ground Pressure - Cab Long Stick
4.8 psi
Ground Pressure - Cab Standard Stick
4.7 psi
Maximum Traction Force - High Speed
3417 lbf
Travel Speed - Low
1.5 mile/h
Travel Speed - High
2.8 mile/h
Maximum Traction Force - Low Speed
6947 lbf
Gradeability - Continuous Operation
20°
Ground Pressure - Canopy Long Stick
4.5 psi
Ground Pressure with Canopy - Standard Stick, Optional Counterweight
4.8 psi
Ground Pressure with Cab - Standard Stick, Optional Counterweight
5.1 psi
Ground Pressure with Cab - Long Stick, Optional Counterweight
5.2 psi
Gradeability (< 10 minutes Operation)
30°

Certification - Cab and Canopy

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

Undercarriage

Number of Track Rollers
4
Track Roller Type
Center Flange
Number of Carrier Rollers
1