Selecting the right hydraulic excavator for construction projects can be challenging given the wide array of models and specifications available. This analysis focuses on Komatsu Yamagata's compact and medium-sized hydraulic excavators, providing detailed performance parameter comparisons to facilitate informed decision-making.
Komatsu Yamagata Compact Excavator Overview
As a key production base of Komatsu Group, Komatsu Yamagata manufactures compact hydraulic excavators renowned for their reliability, operational efficiency, and versatility across various applications. The product range spans from compact to medium-sized models, with this analysis concentrating on representative series including PC120, PC78UU, and PC138US models.
Model Specifications and Comparative Analysis
1. Standard Hydraulic Excavators: PC120 and PC200 Series
PC120-8/11 Standard Models:
The PC120 series represents Komatsu's classic compact excavators, known for balanced performance and broad applicability. Key specifications comparison:
|
Parameter
|
PC120-8
|
PC120-11
|
Unit
|
|
Bucket Capacity
|
0.50
|
0.50
|
m³
|
|
Operating Weight
|
12,100
|
12,400
|
kg
|
|
Transport Length
|
7,590
|
7,620
|
mm
|
|
Max. Digging Depth
|
5,520
|
5,520
|
mm
|
PC200-8/10/11 Standard Models:
The PC200 series represents Komatsu's medium-sized excavators, offering enhanced digging force and operational efficiency. Key specifications comparison:
|
Parameter
|
PC200-8
|
PC200-10
|
PC200-11
|
Unit
|
|
Bucket Capacity
|
0.80
|
0.80
|
0.80
|
m³
|
|
Operating Weight
|
19,500
|
19,600
|
19,800
|
kg
|
|
Max. Digging Depth
|
6,620
|
6,620
|
6,620
|
mm
|
2. Long-Arm Hydraulic Excavators
Specialized models designed for deep excavation, water conservancy projects, and river dredging applications.
PC120-11 40F:
|
Parameter
|
Value
|
Unit
|
|
Bucket Capacity
|
0.28
|
m³
|
|
Max. Digging Depth
|
9,190
|
mm
|
3. Compact Radius Excavators: PC78US/UU and PC138US/UU Series
Tailored for confined space operations with minimized rear swing radius.
PC78US-8/10 Models:
|
Parameter
|
PC78US-8
|
PC78US-10
|
Unit
|
|
Bucket Capacity
|
0.28
|
0.28
|
m³
|
|
Tail Swing Radius
|
1,240
|
1,390
|
mm
|
Selection Considerations
-
Project Scope:
Match excavator capacity to project scale and material handling requirements
-
Workspace Constraints:
Consider spatial limitations for proper machine maneuverability
-
Specialized Applications:
Evaluate need for long-reach or confined space capabilities
-
Operational Efficiency:
Balance performance specifications with fuel efficiency requirements
The Komatsu Yamagata compact excavator portfolio offers comprehensive solutions for diverse construction applications, with detailed technical specifications enabling precise equipment selection based on project requirements.
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