- Category: Mini Excavators ➔
- Manufacturer: Caterpillar ➔
- Model: 303.5E2 CR ➔
The Caterpillar 303.5E2 CR is a compact mini excavator designed for digging, trenching, grading, and utility work in confined jobsite conditions. It features a reduced tail swing design for improved maneuverability in tight spaces and is commonly used in landscaping, construction, and municipal applications. The 303.5E2 CR is part of Caterpillar's 3-ton class mini excavator lineup and is known for its balance of digging performance, transportability, and operator visibility. Typical configurations may include a canopy or enclosed cab, auxiliary hydraulics, and a dozer blade for backfilling and site preparation.
General Specifications
| Engine | C1.3 Starting 2021 Model Year |
| Max Digging Depth | 71.00 ft (21.64 m) Starting 2021 Model Year |
| Net Power | 23.50 hp (17.52 kw) Starting 2021 Model Year |
| Operating Weight | 7,204.00 lbs (3,267.68 kg) Starting 2021 Model Year |
Blades
| Blade Height | 13.00 in (33.02 cm)
|
| Blade Lift Height | 16.00 in (40.64 cm)
|
| Blade Width | 5.90 ft (1.80 m)
|
| Dig Depth | 19.00 in (48.26 cm)
|
Engine
| Bore | 3.40 in (8.64 cm)
|
| Displacement | 104.00 cu in (1,704.26 cu cm)
|
| Engine Model | Cat C1.7
|
| Gross Power | 24.80 hp (18.49 kw)
|
| Net Power | 23.50 hp (17.52 kw)
|
| Stroke | 3.60 in (9.14 cm)
|
Hydraulic System
| Auxiliary Circuit - Primary | 18.50 gpm (70.02 lpm)
|
| Auxiliary Circuit - Secondary | 6.60 gpm (24.98 lpm)
|
| Digging Force - Bucket | 7,419.00 lbs (3,365.21 kg)
|
| Digging Force - Stick - Long | 3,799.00 lbs (1,723.20 kg)
|
| Digging Force - Stick - Standard | 4,249.00 lbs (1,927.32 kg)
|
| Operating Pressure - Equipment | 3553 psi
|
| Operating Pressure - Swing | 3132 psi
|
| Operating Pressure - Travel | 3553 psi
|
Service Refill Capacities
| Cooling System | 1.50 gal (5.68 l)
|
| Engine Oil | 1.80 gal (6.81 l)
|
| Fuel Tank | 12.20 gal (46.18 l)
|
| Hydraulic System | 17.20 gal (65.10 l)
|
| Hydraulic Tank | 11.20 gal (42.39 l)
|
Swing System
| Machine Swing Speed | 10 rpm
|
Travel System
| Maximum Traction Force - High Speed | 3,822.00 lbs (1,733.63 kg)
|
| Maximum Traction Force - Low Speed | 6,992.00 lbs (3,171.52 kg)
|
| Travel Speed - High | 2.90 mph (4.67 kph)
|
| Travel Speed - Low | 2.00 mph (3.22 kph)
|
Weights
| Operating Weight - With Cab | 8,209.00 lbs (3,723.54 kg)
|
| Operating Weight - With Canopy | 7,803.00 lbs (3,539.39 kg)
|