Komatsu PC55 MR-2: Serial Number Check and Insights

[MikePhua]

The Komatsu PC55 MR-2 is a compact, highly efficient mini-excavator designed for tight workspaces and tough environments. With its advanced features and superior performance, this model has become a popular choice in construction and digging projects that require maneuverability and power. This article delves into the importance of checking the serial number of this model, understanding its history, and offering practical insights for buyers and operators.
Introduction to Komatsu: A Brief History
Komatsu Ltd. is one of the largest manufacturers of construction, mining, and industrial machinery in the world. Founded in 1921, the company initially produced small-scale machinery but soon expanded its portfolio to include larger, more complex equipment. The company's commitment to innovation and quality has made it a trusted name in the heavy equipment industry.
Komatsu’s mini-excavators, like the PC55 MR-2, have gained significant popularity because of their durability, advanced technology, and the ability to work in confined spaces. The PC series of mini-excavators is particularly valued for its versatility, offering excellent performance across various sectors such as urban construction, landscaping, and utilities.
Komatsu PC55 MR-2 Overview
The PC55 MR-2, part of Komatsu’s mini-excavator lineup, is designed to provide optimal performance in confined areas where space is limited but work demands high power and efficiency. It’s equipped with a powerful engine, advanced hydraulics, and a compact structure, making it suitable for a wide range of applications.
Key Features:

• Engine Power: 42.5 kW (57 horsepower) – providing ample power for various tasks.
  
• Operating Weight: Approximately 5,500 kg (12,125 lbs), which strikes a balance between maneuverability and lifting capacity.
  
• Digging Depth: 3.7 meters (12 feet), allowing for deep excavation in tight spaces.
  
• Bucket Capacity: 0.14 to 0.2 cubic meters, ideal for handling a range of materials from dirt to rubble.
  

The PC55 MR-2 is designed with advanced hydraulic components that ensure smooth operation and increased lifting capabilities. It’s also equipped with a spacious operator's cabin for enhanced comfort and safety during long working hours.
Why Serial Number Checking is Important
When purchasing a Komatsu PC55 MR-2, checking the serial number is crucial for several reasons:

1. Verification of Authenticity: The serial number is a unique identifier for the machine and helps verify its authenticity. This is essential when buying pre-owned equipment to avoid counterfeit machines.
   
2. Ownership and History: The serial number provides access to the machine’s service history, including any previous repairs, maintenance, or recalls. This is valuable for buyers and operators as it ensures the equipment has been well-maintained.
   
3. Warranty and Service Records: Knowing the serial number also ensures that you can access valid warranty services and any manufacturer recalls or upgrades that may apply to your unit.
   
4. Maintenance and Parts Availability: Serial numbers are linked to specific machine models, which helps in finding the right parts, manuals, and maintenance schedules for the equipment.
   

To check the serial number of a Komatsu PC55 MR-2, one can typically find the information on a plate located near the operator’s compartment or under the machine’s frame.
Key Specifications of the Komatsu PC55 MR-2

• Engine: 4D95E-5, water-cooled, 4-cylinder diesel engine
  
• Horsepower: 57 hp (42.5 kW)
  
• Operating Weight: 5,500 kg (12,125 lbs)
  
• Bucket Capacity: 0.14 to 0.2 cubic meters
  
• Digging Depth: 3.7 meters (12 feet)
  
• Max Reach: 6.3 meters (20.7 feet)
  
• Max Dumping Height: 4.2 meters (13.8 feet)
  
• Hydraulic Flow Rate: 135 L/min, providing powerful hydraulic performance
  
• Track Width: 400 mm (15.75 inches), providing enhanced stability
  

The PC55 MR-2’s compact size, high-performance hydraulics, and strong engine make it ideal for both urban and remote construction sites. Its capabilities in deep digging, long reach, and material handling make it a versatile tool in a contractor's fleet.
Maintenance and Troubleshooting
Routine maintenance is essential for the Komatsu PC55 MR-2 to operate smoothly and to extend the life of the machine. Regular inspections of the engine, hydraulics, undercarriage, and electrical systems are important. Common issues that might require attention include:

1. Hydraulic Leaks: Like many excavators, the PC55 MR-2 is prone to hydraulic leaks, which can cause a drop in performance. Regular checks of hydraulic lines and seals are recommended to catch issues early.
   
2. Engine Overheating: Due to the compact design, overheating can occur if the cooling system is clogged or malfunctioning. Keeping the radiator clean and monitoring engine temperatures can prevent this.
   
3. Undercarriage Wear: The undercarriage, particularly the tracks and rollers, requires frequent inspection for wear. Replacing worn-out parts before they cause further damage can save on repair costs.
   

Operators should follow the machine's service manual, which outlines the recommended maintenance schedule for each component. Regular fluid checks, filter replacements, and undercarriage cleaning are key to keeping the PC55 MR-2 in optimal condition.
Komatsu’s Contribution to the Mini-Excavator Market
Komatsu has been a pioneer in the mini-excavator market, with its innovations often setting new standards for efficiency and productivity. The PC55 MR-2 is a perfect example of Komatsu’s dedication to providing versatile and powerful equipment in compact forms. Over the years, Komatsu has built a strong reputation for creating machinery that meets the needs of small contractors, landscapers, and urban developers.
The mini-excavator market itself has grown substantially, with Komatsu leading the way by consistently improving their models. The compact size, power, and multi-functional capabilities of machines like the PC55 MR-2 have made them essential for construction in urban environments where larger machines are unable to access.
Conclusion
The Komatsu PC55 MR-2 is a well-balanced, compact excavator that delivers excellent performance in tight workspaces. Its powerful engine, efficient hydraulics, and versatile design make it a top choice for a wide range of construction tasks. By understanding the importance of serial number verification, operators can ensure they are buying a machine with a clear service history, improving the longevity and reliability of their investment. Whether you’re looking to purchase a new or used unit, the PC55 MR-2 remains a solid option in the mini-excavator market.
Key Specifications at a Glance:

• Engine: 4D95E-5, 57 hp
  
• Operating Weight: 5,500 kg
  
• Bucket Capacity: 0.14–0.2 cubic meters
  
• Digging Depth: 3.7 meters
  
• Hydraulic Flow Rate: 135 L/min
  

By maintaining your Komatsu PC55 MR-2 and ensuring proper serial number checks, you can maximize its potential and enjoy years of reliable service.