Komatsu PC50UU-2 Mini Excavator Overview

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Machine Summary
The Komatsu PC50UU-2 is a compact mini excavator designed for efficient operation in tight jobsite conditions. Its zero-tail swing design allows close-quarter maneuverability while maintaining a robust performance profile. This model is widely used in construction, landscaping, and utility projects requiring agility and precise digging power.
Key Specifications

• Engine: Komatsu 3D88E-5, 4-cylinder naturally aspirated diesel engine
  
• Power: 39.4 horsepower (29.4 kW) at 2,350 rpm
  
• Displacement: 2.2 liters (134 cubic inches)
  
• Torque: 102.6 lb-ft (139 Nm) at 1,440 rpm
  
• Operating Weight: Approximately 11,110 lbs (5,040 kg)
  
• Dimensions:
  • Shipping length: 18.2 feet (5,550 mm)
    
  • Width: 6.3 feet (1,935 mm)
    
  • Height to cab roof: 8.6 feet (2,625 mm)
    
  • Tail swing radius: 3.5 feet (1,060 mm)
    
• Hydraulic Capacities:
  • Hydraulic system fluid: 14.5 gallons (55 liters)
    
  • Cooling system capacity: 1.9 gallons (7.3 liters)
    
  • Engine oil capacity: 2.1 gallons (8 liters)
    
• Performance:
  • Maximum digging depth: 12.5 feet (3,800 mm)
    
  • Maximum reach along ground: 19.9 feet (6,070 mm)
    
  • Maximum cutting height: 19.5 feet (5,945 mm)
    
  • Maximum loading height: 13.9 feet (4,230 mm)
    
  • Maximum vertical wall digging depth: 9.9 feet (3,020 mm)
    
  • Travel speed: 2.9 mph (4.6 km/h)
    
  • Swing speed: 9 rpm
    
• Track Details:
  • Track width: 6.3 feet (1,935 mm)
    
  • Track length on ground: 6.6 feet (2,000 mm)
    
  • Ground clearance: 1.2 feet (355 mm)
    
• Bucket Options:
  • Minimum bucket capacity: 0.07 cubic yards (0.05 m³)
    
  • Maximum bucket capacity: 0.24 cubic yards (0.18 m³)
    

Design Features

• Zero-tail swing design enhances operational safety and flexibility in confined urban or industrial environments.
  
• The machine’s compact size is ideal for maneuvering in tight spaces without sacrificing digging capability.
  
• The engine’s balanced power output and torque optimize fuel efficiency, balancing performance with economy.
  
• Hydraulic system designed to deliver smooth simultaneous boom, arm, and bucket operation.
  

Maintenance and Operation

• Easy access to engine and hydraulic components simplifies routine maintenance and reduces downtime.
  
• Designed for reliability with durable components engineered to withstand heavy daily use.
  
• Suitable for operators desiring a compact but capable excavator for varied site conditions.
  

Terminology

• Zero-Tail Swing: Excavator design limiting counterweight extension behind tracks, reducing the machine’s rear swing radius.
  
• Swing Speed: The rotational speed of the upper structure around the undercarriage.
  
• Buck Capacity: The volume of material a bucket can hold.
  
• Operating Weight: Total weight of the machine ready for operation, including fluids and attachments.
  
• Hydraulic Fluid Capacity: Volume of fluid used in the machine’s hydraulic system for power transmission.
  

Summary
The Komatsu PC50UU-2 mini excavator combines compact dimensions with capable performance, making it a versatile solution for operators needing agility and power in restricted spaces. Its zero-tail swing configuration minimizes the risk of collisions on crowded job sites while enabling efficient earthmoving tasks with a respectable reach and digging depth. Coupled with a durable engine and efficient hydraulics, the PC50UU-2 remains a popular choice in the compact excavator segment.