Kubota KX057-5 Mini Excavator – Parts, Specs & Serial Number Guide

Description:

The Kubota KX057-5 is a 5.5-ton class mini excavator designed for tough digging jobs with precision control and superior operator comfort. As a newer model in Kubota’s KX series, the KX057-5 adds enhanced technology, greater visibility, and smoother hydraulic performance, making it a favorite among contractors, landscapers, and utility crews.

Key Specifications:

Engine:

• Model: Kubota V2607-CR-TE5B

• Type: 4-cylinder, turbocharged, liquid-cooled diesel (Tier 4 Final)

• Displacement: 159.6 cu in (2.6 L)

• Gross Power: 47.6 hp (35.5 kW) @ 2,000 rpm

Transmission & Travel:

• Travel Speed: Low: 1.7 mph (2.7 km/h), High: 3.1 mph (5.0 km/h)

• Drive Motors: Hydraulic axial piston motors with automatic downshift

Hydraulic System:

• Pump Capacity: 46.1 + 46.1 + 11.6 l/min (triple pump system)

• Auxiliary Hydraulics Flow: 24.6 gpm (93.1 l/min)

• Max Operating Pressure: 3,770 psi (260 bar)

• Control Type: Pilot-operated joystick controls

Dimensions:

• Operating Weight: 12,200 lbs (5,534 kg)

• Max Digging Depth: 12 ft 9 in (3.89 m)

• Max Reach at Ground Level: 19 ft 9 in (6.02 m)

• Tail Swing: Conventional with reduced overhang

Performance:

• Bucket Breakout Force: 10,172 lbf (45.2 kN)

• Arm Digging Force: 5,623 lbf (25 kN)

Maintenance & Common Parts:

Routine Maintenance Tips:

• Replace engine oil, fuel, and air filters every 250 hours

• Inspect track tension and undercarriage components monthly

• Clean radiator and oil cooler screens regularly to prevent overheating

Frequently Replaced Parts:

• KX057-5 Hydraulic Cylinder Kits

• Final Drive Motors

• Rubber Tracks and Sprockets

• Quick Couplers and Buckets

• Glow Plugs and Injectors

Common Issues & Quick Fixes:

• Erratic Hydraulic Operation: Usually caused by air in lines or dirty filters—replace with OEM-style hydraulic filter kits.

• Final Drive Noise or Failure: Typically from contaminated oil or worn seals; replace with new final drive motor units.

• AC or Display Screen Malfunctions: Check fuses and relays first; if no resolution, consider a replacement display or control module.

Pro Tips:

• Enable auto-idle to reduce fuel use and wear during idle time.

• Use Kubota’s factory-coded diagnostic display for fast error code recognition.

• Inspect your boom swing pins and bushings regularly—looseness here is a sign it’s time for replacements.

Serial Number Location:

• Located on the cab frame under the operator’s seat area, and also stamped on the right rear side of the undercarriage.

• Always verify your serial number before ordering parts from our KX057-5 parts catalog.