Description
Komatsu 400 Line 7 Excavator is one of the heavy machines used in mining, construction and road construction projects, which is considered for large-scale earthmoving operations due to its high engine power, powerful hydraulic system and suitable bucket capacity. This device is in the class of mechanical excavators of about 40 tons and is designed for projects where speed of operation, drilling power and durability of parts are very important. Kavir Machine Espadana is one of the reliable sellers of types of Komatsu excavator and other famous brands in Iran.
Komatsu 400 line 7 excavator (Komatsu PC400-7);
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If you intend to buy a Komatsu PC400-7 excavator, check the technical specifications of this machine or supply its spare parts, it is very important to know the condition of the engine, hydraulic system, undercarriage and repair records. Especially in the used heavy machinery market, choosing the right machine is not only limited to the brand and model; But the actual operating conditions and maintenance cost are also influential in the final decision.
In this article, we examine the technical specifications of the Komatsu 400 Line 7 excavator, its main applications, purchase advantages, maintenance tips, and the difference between this model and the Komatsu 400 Line 6.
Technical specifications of the Komatsu 400 line 7 excavator
Komatsu PC400-7 excavator uses Komatsu six-cylinder diesel engine and hydraulic system for heavy machinery. According to the production version, chassis type, shoe width, arm length and installed equipment, some specifications of the device may be different.
The common technical specifications of this model are as follows:
The numbers related to the engine, weight and dimensions should be controlled based on the technical manual of the same version and serial number of the device. For example, bucket capacity and digging depth change with arm length and bucket type.
Komatsu PC400-7 excavator engine
The engine is one of the most important parts of the Komatsu 400 line 7 excavator. In the common specifications of this model, the SAA6D125E-3 engine with six cylinders and an approximate volume of 11 liters is used. Engine power is intended for carrying out heavy drilling operations, loading minerals and moving large volumes of soil in construction projects.
However, the rated power of the motor alone is not a sufficient criterion to evaluate the performance of a used machine. The condition of the injectors, fuel pump and system, turbocharger, cooling system and compression loss can affect the actual power, fuel consumption and repair costs.
When buying Komatsu Excavator 400 Line 7, it is recommended to check engine exhaust smoke, starting the machine in cold mode, oil leakage, operating temperature and engine performance under load. It is better to make the final evaluation with a suitable fault finding device and the opinion of a technical expert of heavy machinery.
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Komatsu 400 line 7 hydraulic system
The hydraulic system is responsible for transferring the power of the engine to the boom, arm, bucket, movement motors and the room rotation assembly. The correct operation of this system is of fundamental importance in the productivity of the excavator; Because reducing oil pressure or flow can slow down movements and reduce drilling power.
In the technical review of the device, the following are important:
- Pressure and flow rate of hydraulic pumps according to the values of the repair book
- Status of control valves and pilot circuit
- health of boom, arm and bucket jacks
- Internal or external leakage of pumps and valves
- Hydraulic oil temperature during work
- condition of filters, oil cooler and used oil quality
If the machine is purchased for mining work, simultaneous testing of boom, arm, bucket, chamber rotation, and chain movement under load can provide important information about the health of the hydraulic system. Of course, the result of this test should be interpreted along with pressure measurement and expert review.
Komatsu 400 line 7 excavator applications in mining and road construction
As a piece of heavy machinery, the PC400-7 excavator is well-suited for projects that require significant digging power and high loading capacity.
1. Mineral Extraction and Loading
In open-pit mines, this machine can be used for extracting minerals, loading rock and soil, and filling mining trucks according to their specific capacities. The choice of bucket should be matched to the type of material, load density, ground conditions, and the truck’s hauling capacity.
2. Heavy-Duty Earthmoving Operations
In large-scale civil engineering projects, this machine is used for site preparation, excavation along routes, and moving large volumes of earth.
3. Road Construction and Route Preparation
In road construction—including grading slopes, creating trenches, and preparing the roadbed—the Komatsu PC400-7 can operate alongside bulldozers, loaders, and dump trucks.
4. Industrial and Infrastructure Projects
This model can also be utilized in dam construction, the preparation of industrial sites, and large-scale excavation operations, provided that the machine’s dimensions and operational capacity are compatible with the constraints of the project site.
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Advantages of the Komatsu PC400-7 Excavator
One of the reasons buyers are drawn to the Komatsu PC400-7 is that it falls into the category of heavy machinery, offering sufficient power for demanding, high-pressure projects. However, the machine’s true advantage on the job site depends on its technical condition and its suitability for the specific type of operation.
- Adequate power for heavy-duty operations: The engine and hydraulic system are designed for large-scale excavation and loading tasks.
- Versatility across various projects: By selecting the appropriate bucket and attachments, the machine can be utilized in mining, earthmoving, and road construction.
- Maintainability: Tracking operating hours, performing regular servicing, and periodically inspecting wear parts can help reduce the likelihood of unexpected breakdowns.
- Importance of spare parts availability: Timely access to filters, engine components, hydraulic parts, and undercarriage components helps minimize machine downtime.
It should be noted that these advantages do not guarantee low fuel consumption or low repair costs. These factors depend on the machine’s condition, the intensity of the work, the operator’s skill, and the quality of maintenance.
Buying Guide for the Komatsu 400 Excavator
Used “Dash 7” Series
When purchasing a Komatsu 400 “Dash 7” (Series 7) excavator, examining the machine’s exterior is not enough. A machine might look clean on the outside, yet its engine, hydraulic pump, or undercarriage could require major overhauls.
Before making a purchase, check the following:
Engine and Fuel System: Start the machine while the engine is cold. Observe the exhaust smoke, listen for unusual engine noises, check for leaks, and evaluate performance under load.
Hydraulic Pump and Circuit: Assess the speed of movements, digging power, oil temperature, and check for any internal or external leaks.
Undercarriage: Inspect the wear levels on the tracks, rollers, idlers, sprockets, and track shoes. The cost of refurbishing the undercarriage can represent a significant portion of the total cost of ownership.
Boom, Arm, and Bucket: Look closely for cracks, improper or amateurish welding, play (looseness) in pins and bushings, and damage to the hydraulic cylinders.
Swing and Travel Systems: Listen for abnormal noises in the swing gearbox, check for jolts or impacts when stopping, and verify the proper operation of the travel motors.
Serial Number and Maintenance Records: Verify the exact model, manufacturer specifications, recorded operating hours, and maintenance history against the machine’s official documentation.
Ultimately, the price of a Komatsu 400 Dash 7 excavator should be determined based on its year of manufacture, actual operating hours, technical condition, the state of the undercarriage, and its equipment. …should be determined in conjunction with market conditions. Comparing prices without considering these factors could lead to a costly decision.
Spare Parts for Komatsu PC400-7 Excavator
Sourcing the correct parts for the PC400-7 is crucial for maintaining the machine’s operational readiness. Parts must be selected based on the exact model, part number, and specific version, as a similar appearance does not necessarily guarantee compatibility.
The primary categories of spare parts required for this machine include:
- Engine and fuel system components
- Hydraulic system components and pumps
- Oil, fuel, and air filters
- Undercarriage components, including rollers, tracks, track shoes, and sprockets
- Cylinder components, as well as pins and bushings for the boom and arm
- Travel drive (gearbox) and swing mechanism components
- Electrical components and sensors
To minimize machine downtime, it is advisable to stock high-turnover parts and establish a periodic maintenance schedule tailored to the actual operating conditions of the mine or project site….be adjusted. Furthermore, when ordering parts, providing the full machine model and serial number helps minimize the risk of procuring the wrong components.
Conclusion: Is the Komatsu 400-7 a Suitable Choice?
The Komatsu 400-7 excavator is a viable option for operations requiring a heavy-duty crawler excavator for mining, loading, and large-scale earthmoving tasks. However, the value of the machine extends beyond its nominal specifications; one must also consider its operational capacity, the condition of the engine and hydraulic systems, the state of the undercarriage, the cost of spare parts, and the specific working conditions of the project.
If you are considering purchasing a Komatsu PC400-7 excavator, ensure a thorough technical inspection is conducted before making a final decision. Weigh the potential repair costs against the purchase price; this approach will lead to a more economical choice and help reduce the risk of equipment downtime during your project. Doosan DX520LCA Excavator Price
Comparison: Komatsu 400-7 vs. Komatsu 400-6 Excavator
The **Komatsu 400-7 excavator** differs significantly from the Komatsu 400-6 in terms of engine specifications. The PC400-7 is equipped with an SAA6D125E-3 engine, delivering approximately 330 horsepower at 1,850 RPM, whereas the standard PC400-6 utilizes an SA6D125E engine, producing about 306 horsepower at 2,050 RPM. Both the operating weight and bucket capacity range for these models vary depending on the specific version and installed equipment; however, according to published specifications, both generally fall into the ~41-ton weight class with bucket capacities ranging from approximately 1.3 to 2.2 cubic meters. Consequently, the “Dash 7” (Series 7) model holds an advantage in terms of nominal engine power. Nevertheless, when choosing between the two, one must also evaluate the actual condition of the engine, the health of the hydraulic pump, the wear level of the undercarriage, the cost of spare parts, and the machine’s maintenance history. Particularly when purchasing used equipment, a well-maintained “Dash 6” (Series 6) unit may prove to be a more economical choice than a worn-out “Dash 7” model. Price of Hitachi 490 Excavator
Frequently Asked Questions About the Komatsu PC400-7 Excavator
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1. What is the weight of the Komatsu PC400-7 excavator?
The operating weight of standard versions of the PC400-7 is approximately 41,200 kg. In certain configurations—such as those featuring a variable-width undercarriage—the machine’s weight may be higher.
2. What is the horsepower of the Komatsu PC400-7 engine?
According to the reference specifications for this model, it is equipped with an SAA6D125E-3 engine, which produces approximately 330 horsepower at a rated speed of 1,850 rpm. When inspecting a specific unit, the specifications of the installed engine should be verified against the machine’s nameplate and the manual for that particular version.
3.
What is the bucket capacity of a Komatsu 400-7 excavator?
The bucket capacity range for this series is approximately 1.3 to 2.2 cubic meters. The appropriate capacity depends on the type of operation, material density, arm length, and the machine’s operational constraints.
4. What is the fuel consumption of a Komatsu 400-7?
Fuel consumption is not a fixed figure; it depends on operating hours under load, the type of soil or rock, engine condition, hydraulic pump settings, and the operator’s skill. To accurately estimate project costs, measure the machine’s actual consumption under similar working conditions.
5. Is the Komatsu 400-7 excavator suitable for mining?
Yes, this model is suitable for many excavation, earthmoving, and mineral loading operations. However, the final choice should be based on the type of material, truck capacity, ground conditions, and expected production volume.
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6. Which components should be inspected when purchasing a used Komatsu 400-7?
The engine, hydraulic pumps, cylinders, control valves, undercarriage, swing drive (gearbox), travel motors, and the connections for the boom and arm are the most critical areas that require professional inspection.
7. What is the main difference between the Komatsu 400-7 and the 400-6?
According to official specifications, the “Dash 7” (Series 7) model features higher engine power. However, factors such as wear and tear, technical condition, actual fuel consumption, and maintenance costs are often more significant than the generation difference when making a purchasing decision.
8.
What information is required to order parts for the Komatsu PC400-7?
Please provide the full machine model, serial number, and the part number. If possible, also include an image of the nameplate or the specific part in question; this helps minimize the risk of selecting an incompatible part.
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Buying and Selling New and Used Road Construction, Mining, and Excavation Machinery:
At Kavir Machine Espadana, in addition to new machinery and parts, we offer used road construction and mining equipment—complete with warranties and after-sales service—including the following:
Hydraulic Hammers, Loaders, Excavators, Dump Trucks, Forklifts, Backhoes, Drill Wagons, Graders, and Bulldozers. For consultations, or to inquire about the price of a Komatsu 400 excavator and its spare parts, please contact our experts.
Company
Kavir Machine Espadana
Kavir Machine Espadana Company is registered in Isfahan Province with a focus on the importation of road construction and mining machinery. Furthermore, it serves as the sole exclusive representative for Hyundai Everdigm hydraulic hammers throughout the country. Drawing upon decades of experience in mining contracting, as well as road construction and civil engineering projects, the company’s management has expanded its operations into the import and sale of road construction and mining machinery, along with related parts and equipment.
Recognizing the shortage of high-quality machinery in the country—and despite challenges such as sanctions and customs-related issues—the company has undertaken the direct importation of machinery from reputable global manufacturers. A notable milestone in this regard was the partnership agreement signed with Japan’s Sumitomo Corporation in 2003 (1382 SH), which resulted in the importation of the first batch of brand-new Komatsu machinery into Iran. With reliance on God Almighty and a commitment to ensuring the satisfaction of our valued customers, we hope to take even firmer steps toward the development and prosperity of our beloved Iran.
Contact Information for Kavir Machine Espadana
Isfahan, Zob-e Ahan Road (3rd kilometer), right-hand side service road
