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Mitsubishi MM57 SR Mini Excavator Overview
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Introduction
The Mitsubishi MM57 SR is a compact, crawler-type mini excavator designed for versatility and maneuverability in tight spaces. Manufactured by Mitsubishi Heavy Industries, this model is recognized for its durability and efficiency, making it a valuable asset for various construction and landscaping projects.
Key Specifications
  • Operating Weight: Approximately 5,310 kg
  • Engine: Mitsubishi K4N, 2.3L, 29.4 kW (40 PS) at 2,200 rpm
  • Hydraulic System:
    • Relief Valve Setting: 21.6 MPa
    • Hydraulic Pump: GPx1, PPPx2
  • Performance:
    • Gradeability: 30°
    • Arm Crowd Force: 24.1 kN
    • Bucket Digging Force: 40.1 kN
    • Max Digging Depth: 4,000 mm
    • Max Digging Reach: 5,760 mm
    • Max Dumping Clearance: 4,640 mm
    • Max Digging Height: 6,390 mm
    • Swing Speed: 9.2 rpm
  • Dimensions:
    • Overall Length: 5,200 mm
    • Overall Width: 2,010 mm
    • Overall Height: 2,530 mm (with cab)
    • Ground Clearance: 330 mm
  • Undercarriage:
    • Track Length: 2,500 mm
    • Track Gauge: 1,600 mm
    • Shoe Width: 400 mm
    • UC Width: 2,000 mm
  • Fuel Tank Capacity: 69 liters
  • Hydraulic Oil Tank Capacity: 80 liters
Maintenance Considerations
While the Mitsubishi MM57 SR is known for its reliability, prospective owners should be aware of potential challenges related to parts availability, especially in regions where Mitsubishi's presence is limited. It's advisable to establish a relationship with authorized dealers or service centers to ensure access to genuine parts and technical support.
Conclusion
The Mitsubishi MM57 SR mini excavator offers a balance of power, compactness, and efficiency, making it suitable for a range of applications. However, potential buyers should consider factors like parts availability and support infrastructure to ensure long-term satisfaction with the equipment.
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