303.5E CR

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The Cat 303.5E CR delivers high performance in a compact radius design to help you work in the tightest applications.


Engine Model Cat® C1.8 Cat® C1.8 Less
Net Power 31.6 HP 23.6 kW Less
Gross Power 33.3 HP 24.8 kW Less


Operating Weight 7734.0 lb 3508.0 kg Less
Operating Weight - With Cab 8139.0 lb 3692.0 kg Less


Maximum Digging Depth - Standard Stick 9.6 ft 2880.0 mm Less
Maximum Reach - Ground Level - Standard Stick 16.7 ft 5060.0 mm Less
Height - Over Cab 8.2 ft 2500.0 mm Less
Maximum Cutting Height - Long Stick 16.5 ft 5030.0 mm Less
Maximum Cutting Height - Standard Stick 16.2 ft 4920.0 mm Less
Maximum Dump Height - Long Stick 11.9 ft 3640.0 mm Less
Maximum Dump Height - Standard Stick 11.5 ft 3520.0 mm Less
Maximum Horizontal Reach - Long Stick 17.8 ft 5440.0 mm Less
Maximum Horizontal Reach - Standard Stick 17.1 ft 5200.0 mm Less
Maximum Vertical Dig Depth - Long Stick 8.2 ft 2470.0 mm Less
Maximum Vertical Dig Depth - Standard Stick 7.7 ft 2320.0 mm Less
Shipping Height 8.2 ft 2500.0 mm Less
Shipping Length 15.5 ft 4730.0 mm Less
Track Shoe Width 1.0 ft 300.0 mm Less
Transport Width 5.8 ft 1780.0 mm Less

Engine Dimensions

Bore 3.4 in 87.0 mm Less
Stroke 4.0 in 102.4 mm Less
Displacement 110.0 in³ 1.8 l Less

Travel System

Maximum Traction Force - High Speed 3799.0 lb 16.9 kN Less
Maximum Traction Force - Low Speed 6969.0 lb 31.0 kN Less
Travel Speed - High 2.8 mile/h 4.6 km/h Less
Travel Speed - Low 1.6 mile/h 2.6 km/h Less

Hydraulic System

Operating Pressure - Equipment 3553.0 psi 245.0 bar Less
Digging Force - Stick - Standard 4249.0 lb 18.9 kN Less
Digging Force - Stick - Long 3799.0 lb 16.9 kN Less
Digging Force - Bucket 7419.0 lb 33.0 kN Less
Operating Pressure - Travel 3553.0 psi 245.0 bar Less
Operating Pressure - Swing 2625.0 psi 181.0 bar Less
Auxiliary Circuit - Primary 15.9 gal/min 60.0 l/min Less
Auxiliary Circuit - Secondary 7.1 gal/min 27.0 l/min Less

Swing System

Machine Swing Speed 9.0 r/min 9.0 r/min Less
Boom Swing - Left - Without Stop 80.0 ° 80.0 ° Less
Boom Swing - Left - With Stop 55.0 ° 55.0 ° Less
Boom Swing - Right 50.0 ° 50.0 ° Less


Width 70.0 in 1780.0 mm Less
Height 12.8 in 325.0 mm Less
Dig Depth 18.5 in 470.0 mm Less
Lift Height 15.7 in 400.0 mm Less

Service Refill Capacities

Cooling System 1.5 gal (US) 5.5 l Less
Engine Oil 1.8 gal (US) 7.0 l Less
Hydraulic Tank 11.2 gal (US) 42.3 l Less
Fuel Tank 12.2 gal (US) 46.0 l Less
Hydraulic System 17.2 gal (US) 65.0 l Less

MSC Comments

MSC Spec Date 3/06 3/06 Less

Operator Station


Zero Tail Swing

Coupler and Work Tool Options

Dozer Blade



Customer Support

Twice the coverage on compact machines

Caterpillar is introducing a new, 2-year machine standard warranty for Cat® Skid Steer Loaders, Compact Track Loaders, Multi Terrain Loaders and Mini Excavators in the U.S. and Canada.

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Mini Excavator Attachment Options

Cat Mini Excavator attachment options let you get more out of your machines. Browse our attachment offerings to find the ones that are right for your business.

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Swear by Equipment Management

Fuel costs. Labor costs. Maintenance costs. They can all tax your patience. But with timely, accurate data, you can better manage your equipment to keep operating expenses in line. Cat® EMSolutions offers everything you need to control costs, help your guys work better, reduce risks and get more done every day.

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