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The Cat® 305.5E2 Mini Hydraulic Excavator with standard tail and side boom design delivers high performance with low fuel consumption. The durable and reliable structure helps you work in applications with high productivity but low operating cost.


Engine Model Cat C2.4 DI Cat C2.4 DI Less
Net Power 41.7 HP 31.1 kW Less
Stroke 4.0 in 102.4 mm Less
Gross Power - 2,400 rpm - SAE J1995 45.7 HP 34.1 kW Less
Rated Net Power - 2,400 rpm - ISO 9249/SAE J1349 41.7 HP 31.1 kW Less
Displacement 146.5 in³ 2.4 l Less
Bore 3.4 in 87.0 mm Less


Operating Weight 11905.0 lb 5400.0 kg Less
Operating Weight - With Cab 11905.0 lb 5400.0 kg Less
Note Weight includes counterweight, steel tracks, 0.22 m³ bucket, operator. Weight includes counterweight, steel tracks, 0.22 m³ bucket, operator. Less


Ground Clearance 2.1 ft 628.0 mm Less
Track Length 8.0 ft 2440.0 mm Less
Shipping Height 8.3 ft 2540.0 mm Less
Transport Width 6.4 ft 1950.0 mm Less
Tail Swing Radius 5.2 ft 1580.0 mm Less
Track Gauge 5.1 ft 1550.0 mm Less
Length - Center of Rollers 6.3 ft 1920.0 mm Less
Track Shoe Width 1.3 ft 400.0 mm Less
Shipping Length 18.9 ft 5765.0 mm Less

Hydraulic System

Operating Pressure - Equipment 3626.0 psi 25000.0 kPa Less
Digging Force - Bucket 7868.0 lbf 35.0 kN Less
Operating Pressure - Travel 3626.0 psi 25000.0 kPa Less
Pump Flow at 2,400 rpm 37.0 gal/min 140.0 l/min Less
Digging Force - Stick 6115.0 lbf 27.2 kN Less
Type (1) Load Sensing Hydraulics with Variable Displacement Piston Pump Load Sensing Hydraulics with Variable Displacement Piston Pump Less
Type (2) Cat Cat Less
Operating Pressure - Swing 3133.0 psi 21600.0 kPa Less

Swing System

Swing Torque 10.3 lb/ft 13.9 N·m Less
Machine Swing Speed 10.5 min-1 10.5 min-1 Less


Width 76.8 in 1950.0 mm Less
Height 14.2 in 360.0 mm Less
Dig Depth 18.9 in 480.0 mm Less
Lift Height 14.4 in 365.0 mm Less

Service Refill Capacities

Cooling System 2.6 gal (US) 9.8 l Less
Engine Oil 2.5 gal (US) 9.5 l Less
Hydraulic Tank 15.3 gal (US) 58.0 l Less
Fuel Tank 20.6 gal (US) 78.0 l Less
Hydraulic System 22.5 gal (US) 85.0 l Less

Working Ranges

Maximum Reach - Ground Line 19.1 ft 5830.0 mm Less
Maximum Reach 19.5 ft 5955.0 mm Less
Maximum Depth 12.2 ft 3720.0 mm Less
Maximum Digging Height 17.9 ft 5460.0 mm Less
Maximum Dump Height 12.6 ft 3835.0 mm Less
Maximum Vertical Wall 7.3 ft 2210.0 mm Less


Boom Length 126.0 in 3200.0 mm Less
Stick Length 59.1 in 1500.0 mm Less

Travel System

Travel Speed - Low 1.7 mile/h 2.8 km/h Less
Travel Speed - High 2.7 mile/h 4.3 km/h Less
Gradeability - Maximum 25° 25° Less
Maximum Traction Force - High Speed 9037.0 lbf 40.2 kN Less


Bucket Width 30.2 in 766.0 mm Less
Bucket Capacity 7.8 ft³ 0.22 m³ Less

  • Cat C2.4 efficient DI engine delivers higher fuel efficiency.
  • High digging forces, fast cycle times, and excellent stability boosts your productivity.
  • 100% pilot controls and a load sensing hydraulic system.
  • Heavy duty structural designs to ensure machine durability and reliability.
  • Blade is standard with additional float function.
  • Good serviceability with two (2) big side doors.
  • Low counterweight that extends to two sides of the machine, improving the stability.
  • Optional hydraulic line to extend the machine to equip with different hydraulic work tools.


  • Viscous cab mounting system, lower cab vibration for increased operator comfort.
  • New air hose routing, lower noise level for increased operator comfort.
  • New swing motor for better swing performance and reliability.
  • New travel motor for smoother travel and increased reliability.
  • Fuel tank sight gauge and hydraulic oil gauge with protection guard.
  • Meets China Stage II sound level requirement with lower noise level.
  • Equipped with GPS for accurate remote control and easy machine management.

305.5E2 Standard Equipment

  • Openable front windshield with assist device
  • Removable lower windshield with in cab storage bracket
  • Windshield wiper and washer
  • Interior lighting
  • Coat hook
  • Ashtray
  • Radio mounting (meet DIN size)
  • Two stereo speakers
  • Antenna
  • Cup holder
  • Storage pocket
  • Mounting for front and top guard (mounting boss)

  • Instrument panel and gauge
  • Warning information and machine condition