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303.5E CR Hydraulic Excavator

303.5E CR Hydraulic Excavator

At a Glance

Engine Model
Cat® C1.8
Net Power
31.6 HP
Operating Weight
7734 lb
Operating Weight - With Cab
8139 lb
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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.


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Engine Model Cat® C1.8
Net Power 31.6HP
Gross Power 33.3HP


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Operating Weight 7734lb
Operating Weight - With Cab 8139lb


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Maximum Digging Depth - Standard Stick 9.6ft
Maximum Reach - Ground Level - Standard Stick 16.7ft
Height - Over Cab 8.2ft
Maximum Cutting Height - Long Stick 16.5ft
Maximum Cutting Height - Standard Stick 16.2ft
Maximum Dump Height - Long Stick 11.9ft
Maximum Dump Height - Standard Stick 11.5ft
Maximum Horizontal Reach - Long Stick 17.8ft
Maximum Horizontal Reach - Standard Stick 17.1ft
Maximum Vertical Dig Depth - Long Stick 8.2ft
Maximum Vertical Dig Depth - Standard Stick 7.7ft
Track Shoe Width 1ft
Shipping Height 8.2ft
Shipping Length 15.5ft
Transport Width 5.8ft

Engine Dimensions

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Bore 3.4in
Stroke 4in
Displacement 110in³

Hydraulic System

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Operating Pressure - Equipment 3553psi
Digging Force - Stick - Standard 4249lb
Digging Force - Stick - Long 3799lb
Digging Force - Bucket 7419lb
Operating Pressure - Travel 3553psi
Operating Pressure - Swing 2625psi
Auxiliary Circuit - Primary 15.9gal/min
Auxiliary Circuit - Secondary 7.1gal/min

Swing System

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Machine Swing Speed 9r/min
Boom Swing - Left - Without Stop 80°
Boom Swing - Left - With Stop 55°
Boom Swing - Right 50°


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Width 70in
Height 12.8in
Dig Depth 18.5in
Lift Height 15.7in

Service Refill Capacities

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Cooling System 1.5gal (US)
Engine Oil 1.8gal (US)
Hydraulic Tank 11.2gal (US)
Fuel Tank 12.2gal (US)
Hydraulic System 17.2gal (US)

Travel System

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Maximum Traction Force - High Speed 3799lb
Maximum Traction Force - Low Speed 6969lb
Travel Speed - High 2.8mile/h
Travel Speed - Low 1.6mile/h

MSC Comments

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MSC Spec Date 3/06