Views: 24 Author: Site Editor Publish Time: 2026-05-01 Origin: Site
With the continuous expansion of construction projects, infrastructure construction and municipal projects, excavators are an important and irreplaceable mechanical equipment in the construction process, and the demand is increasing. Compared with new excavators, second-hand excavators have become the focus of global buyers due to their high cost-effectiveness, short delivery cycle and wide selection space. However, facing many brands and models, how to accurately choose a reliable and reasonably priced second-hand excavator according to project requirements is a task that requires both technology and experience.
If you need to buy or wholesale, please contact Jiecheng second-hand excavator supplier (email: guo@machbro.com, official website: https://www.machbro.com).
Small excavators usually refer to equipment with an operating weight between 1-6 tons. They are small in size, highly flexible, and suitable for operations in small spaces. They are favored by industries such as landscaping and municipal maintenance.
Typical uses: municipal pipeline maintenance, house foundation excavation, orchard land preparation, ditch cleaning
Main advantages: easy operation, high fuel efficiency, convenient transportation, low maintenance cost
Suitable for users with limited budget or limited working space, it is recommended to choose mature small models such as Komatsu PC30, Kubota U35, etc.
Medium-sized excavators (6-20 tons) have both power and flexibility, suitable for most general construction projects, and are standing models for construction units.
Typical uses: road construction, residential construction, bridge foundation pits, foundation excavation
Main advantages: large operating radius, strong load capacity, rich maintenance resources
There are rich choices of medium-sized models on the market, such as Hitachi ZX120, CAT 312D, Hyundai R150, etc., with high cost performance, especially suitable for bulk purchases.
Large excavators (more than 20 tons) are usually used in high-intensity, long-term working environments, with stronger power and deep digging capabilities.
Typical uses: mining operations, large infrastructure projects, water conservancy projects, port dredging
Main advantages: large excavation depth, large bucket capacity, high efficiency
Limitations: high transportation cost, high site requirements, complex operation
If you are targeting mining or port projects, you can give priority to heavy-duty models such as CAT 320D, Komatsu PC240, Doosan DX300.
Power determines excavation efficiency and workload, while weight affects equipment stability and operating capacity. Only when the two are properly matched can the equipment operate efficiently.
Low-power models (<40kW): suitable for gardening and urban maintenance
Medium-power models (40-100kW): suitable for municipal and earthwork operations
High-power models (>100kW): suitable for heavy engineering and mining construction
During the purchase process, it is necessary to reasonably select the power range according to the construction soil quality, operation time, and work content.
The boom determines the working radius and digging depth of the excavator. Improper selection will lead to low operating efficiency or construction restrictions.
Project type | Recommended boom length | Recommended maximum Digging depth |
Community sewer construction | 2.5~3.5m | 2.8~4.0m |
Bridge and foundation construction | 4.0~5.5m | 4.5~6.5m |
Mine and river dredging | ≥6.0m | ≥7.0m |
The second-hand excavator supplier Jiecheng provides boom/bucket arm parameters and real-time video for equipment on sale, which is convenient for comparison and selection.
The hydraulic system controls the action response of the equipment, and the engine provides the power of the whole machine, which is the key criterion for judging whether the equipment is worth buying.
Hydraulic system inspection points:
Is there any leakage in the pipeline
Is there any scratch on the hydraulic cylinder
Is the rotation smooth
Engine evaluation method:
Is it running steadily after starting
Is the exhaust clean (white or blue smoke indicates abnormality)
Is there any serious shaking or abnormal noise
It is recommended that the supplier provide a video demonstration or support third-party testing and certification when purchasing to ensure the safety of purchase.
When purchasing second-hand equipment, you cannot just look at the price, but need to judge from multiple dimensions such as the status of the whole machine, maintenance records, and brand source.
Checklist suggestions:
It is best if the operating time is less than 8,000 hours
Check whether the core components have been refurbished or replaced
Observe whether the operating table and pedals are excessively worn
Check the wear of the crawler and bucket teeth
If you do not have the ability to distinguish technically, it is recommended to choose professional platforms such as Jiecheng second-hand excavator suppliers to ensure transaction security and after-sales service.
The reliability of the supplier determines whether the purchase is successful. A high-quality second-hand excavator supplier should have the following characteristics:
Equipment inventory: multiple brands and models, covering the full range of 1-30 tons.
Transparent pricing: real-life videos and quotations, eliminating hidden costs.
After-sales service: provide debugging guidance, maintenance training, video inspection and other services.
Wholesale ability: support international exports to meet large-volume procurement needs.
Reputation guarantee: good customer reputation and support for third-party inspection.
For complete inventory information or customized procurement plans, please contact:
Email: guo@machbro.com
Official website: https://www.machbro.com
Choosing a suitable second-hand excavator is not only related to construction efficiency, but also directly affects project costs and progress. By understanding the functional positioning, performance parameters and practical procurement suggestions of different models, you will be able to make more scientific decisions. Choosing a reliable second-hand excavator supplier is the key to ensuring the success of construction.
If you are looking for cost-effective excavator equipment, please contact Jiecheng second-hand excavator supplier:
Email: guo@machbro.com
Official website: https://www.machbro.com
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