303.5E2 CR

Heavy Equipment

303.5E2 CR

Net Power
23.5 HP / 17.5 kW
Operating Weight
8209 lb / 3723 kg
Operating Weight - With Cab
8209 lb / 3723 kg

The Cat E2 Series Mini Hydraulic Excavators are designed to carry on the solid performance of their E Series predecessors, while adding even greater value for the customer. The new High Definition Hydraulic (HDH) System, redesigned operator station and enhanced digital control panel specially designed for Cat Mini Excavators – COMPASS (Complete, Operation, Maintenance, Performance And Security System) – are all standard features that improve performance and increase value.

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303.5E2 CR, 304E2 CR, 305E2 CR, 305.5E2 CR Product Brochure
Engine
Engine Model Cat® C1.7
Net Power 23.5 HP / 17.5 kW
Gross Power 24.8 HP / 18.5 kW
Bore 3.4 in / 87 mm
Displacement 104 in³ / 1.7 l
Stroke 3.6 in / 92.4 mm
Net Power - ISO 9249 23.5 HP / 17.5 kW
Note Cat C1.7 engine meets U.S. EPA Tier 4 Final/EU Stage IIIB emission standards.
Rated Net Power - ISO 9249 23.5 HP / 17.5 kW
Weights
Operating Weight 8209 lb / 3723 kg
Operating Weight - With Cab 8209 lb / 3723 kg
Note Weight includes rubber tracks, bucket, operator, full fuel and auxiliary lines.
Operating Weight - With Canopy 7803 lb / 3539 kg
Travel System
Maximum Traction Force - High Speed 3822 lbf / 17 kN
Maximum Traction Force - Low Speed 6992 lbf / 31.1 kN
Travel Speed - High 2.9 mile/h / 4.6 km/h
Travel Speed - Low 2 mile/h / 3.2 km/h
Ground Pressure 4.6 psi / 31.7 kPa
Hydraulic System
Auxiliary Circuit - Primary 18.5 gal/min / 70 l/min
Auxiliary Circuit - Secondary 6.6 gal/min / 25 l/min
Digging Force - Stick - Long 3799 lbf / 16.9 kN
Digging Force - Stick - Standard 4249 lbf / 18.9 kN
Operating Pressure - Equipment 3553 psi / 245 bar
Operating Pressure - Swing 3132 psi / 216 bar
Operating Pressure - Travel 3553 psi / 245 bar
Pump Flow 26.4 gal/min / 100 l/min
Digging Force - Bucket 7419 lbf / 33 kN
Note Load sensing hydraulics with variable displacement piston pump.
Swing System
Machine Swing Speed 10 r/min
Boom Swing - Left - With Stop 55°
Boom Swing - Left - Without Stop 80°
Swing - Right 50°
Blade
Width 70 in / 1780 mm
Height 13 in / 325 mm
Dig Depth 19 in / 470 mm
Lift Height 16 in / 400 mm
Service Refill Capacities
Cooling System 1.5 gal (US) / 5.5 l
Engine Oil 1.8 gal (US) / 7 l
Hydraulic Tank 11.2 gal (US) / 42.3 l
Fuel Tank 12.2 gal (US) / 46 l
Hydraulic System 17.2 gal (US) / 65 l
Operating Specifications
Maximum Dig Depth 125 in / 3180 mm

Standard Equipment

  • Stick
    • – Long stick (optional in Europe)

Optional Equipment

  • Stick
    • – Standard stick (Europe only)

Heavy Duty Buckets - Mini Excavator

High strength buckets designed for maximum performance and value over a broad range of applications.

Model Width Rated Capacity Weight
305 mm (12 in) 12 in / 305 mm 1.7 yd³ / 48.1 m³ 143.3 lb / 65 kg
406 mm (16 in) 16 in / 406 mm 2.5 yd³ / 70.8 m³ 163.1 lb / 74 kg
457 mm (18 in) 18 in / 457 mm 2.9 yd³ / 82.1 m³ 180.8 lb / 82 kg
508 mm (20 in) 20 in / 508 mm 3.3 yd³ / 93.4 m³ 191.8 lb / 87 kg
619 mm (24 in) 24.4 in / 619 mm 4.2 yd³ / 118.9 m³ 216.1 lb / 98 kg
762 mm (30 in) 30 in / 762 mm 5.6 yd³ / 158.6 m³ 257.9 lb / 117 kg
914 mm (36 in) 36 in / 914 mm 7.1 yd³ / 199.9 m³ 293.2 lb / 133 kg

Augers

Designed to drill holes for footings, fencing, signs and trees.

Model Drive Shaft Torque at Maximum Pressure Drive Method Mounting Bracket Design
A14B 1700 lb/ft / 2304 N·m Gerotor Motor - Direct Drive Mini Hydraulic Excavator
A14B 1700 lb/ft / 2304 N·m Gerotor Motor - Direct Drive Mini Hydraulic Excavator
A19B 3040 lb/ft / 4120 N·m Gerotor Motor - Single Planetary Reduction Mini Hydraulic Excavator
A19B 3040 lb/ft / 4120 N·m Gerotor Motor - Single Planetary Reduction Mini Hydraulic Excavator

Ditch Cleaning Buckets - Mini Excavator

Used in ditch cleaning, sloping, grading and other finishing work.

Model Width Capacity Weight
1000 mm (40 in) 39.4 in / 1000 mm 4.8 ft³ / 135.9 l 240.1 lb / 108.9 kg
1200 mm (47 in) 47.2 in / 1200 mm 167.1 l / 5.9 ft³ 235.7 lb / 106.9 kg
1400 mm (55 in) 55.1 in / 1400 mm 197.1 l / 6.96 ft³ 259.3 lb / 117.6 kg

Grading Buckets - Mini Excavator

For cleaning ditches, sloping, grading and other finishing work.

Model Width Rated Capacity Weight
1200 mm (47 in) 47.2 in / 1200 mm 8.19 yd³ / 231.9 m³ 380.9 lb / 172.8 kg

Tilting Ditch Cleaning Buckets - Mini Excavator

Used in ditch cleaning, sloping, grading and other finishing work.

Model Width Rated Capacity Weight
1200 mm (47 in) 47.2 in / 1200 mm 5.6 yd³ / 158.6 m³ 357.8 lb / 162.3 kg

Utility Thumbs

Hydraulic thumb functionality, with maximum interchangeability.

Model Length Overall Width Rotation
303/303.5/304 PIN ON 32.2 in / 818 mm 15.2 in / 387 mm 116.8°
303/303.5/304 PIN ON 32.2 in / 818 mm 13.4 in / 340 mm 116.8°

Dual Lock Pin Grabber Couplers - Mini Excavator

Increase machine versatility and improve overall production.

Model Drive Method Height Length
Hydraulic 3 ton Hydraulic Cylinder 8.7 in / 220.5 mm 17 in / 428.5 mm

Rippers

For land clearing or site preparation in rock, quarry work and similar high-impact digging applications. Combine with a coupler for Rip & Load productivity.

Model Shank Length Weight Overall Length
490 mm (19 in) 19 in / 490 mm 99 lb / 45 kg 26 in / 659 mm

Mobile Scrap & Demolition Shears

Cat® Scrap and Demolition Shears are industry leaders in steel processing. Power and performance in a reliable package, backed by the best dealer network in the world.

Model Apex Force Cutting Circuit - Maximum Flow Cutting Circuit - Maximum Relief Pressure
S305 73 Sh Ton / 653 kN 16 gal/min / 60 l/min 3625 psi / 25000 kPa

Vibratory Plate Compactors

Vibratory action and dynamic force provides excellent compaction in a compact size.

Model Impulse Force Impact Frequency Base Plate Width
CVP16 3642 lb / 16.2 kN 2200 bpm 12 in / 305 mm
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