Obsolete classic excavator models, although the technology is backward, the performance is still strong

　　If you have worked in the construction machinery industry for many years and know a lot about excavators, then you must be familiar with the three classic excavators we recommend today. Komatsu 7th generation excavators, Caterpillar C-type excavators and Hitachi EX series have been launched for more than 20 years, and many countries are still using them. These excavators do not have advanced technology, but the mechanical quality is still liked by many people in those days and even now.

　　Many people here will wonder why the previous excavators can work for more than 20 years, but the current excavators cannot.

　　1. Now various countries have very strict requirements for environmental emissions, and old equipment is eliminated, and the working conditions cannot be met in the city.

　　2. The technical structure of the old excavator is simple, and the engine maintenance is not complicated.

　　3. The fundamental reason for the failure rate is that the old excavator has basically no electronic failure except mechanical failure. Excavators do not have complex control modules except simple PC control modules and sensors. As the working years get longer and longer, the failure rate of electronic modules is much greater than that of mechanical failures.

　　 Komatsu PC60-7 excavator

is a high-performance, high-efficiency engineering machinery, known for its powerful power, stable working performance, comfortable cab, reliable durability and versatile application range. The following is a detailed introduction to the Komatsu PC60-7WJJ excavator:

　　Basic configuration

　　Engine: Equipped with Komatsu S4D95LE-3 engine, with a power of 65 horsepower, low noise, low emissions and energy saving

　　Drive system: Adopts high-rigidity walking wheel frame to provide excellent driving stability

　　Hydraulic system: Adopts Komatsu's unique hydraulic system to achieve high-efficiency and high-sensitivity excavation and tilting operations

　　Operating system: Equipped with advanced electronic control system, providing convenient operation and multiple working mode options

　　Accessories: Can be equipped with various accessories, such as claws, buckets, etc., to meet the needs of different working conditions

　　Technical parameters

　　Working weight of the whole machine: 6300 kg

　　Bucket capacity: 0.28-0.37 m³

　　Maximum digging depth: 4100 mm

　　Bucket digging force: 54.8 kN

　　Engine model: Komatsu 4D95LE

　　Fuel tank capacity: 130 L

　　Carter 320C Excavator

　　The excavator is a classic model produced by Caterpillar, known for its powerful power performance, efficient construction capacity, stable operating performance, good reliability and comfortable operating environment. The following is a detailed introduction to the Carter 320C excavator:

　　Basic configuration and technical parameters

　　Engine: Carter CAT 3066 ATAAC, rated power 110/1800 kw/rpm, providing strong power support1.

　　Working weight of the whole machine: 21115 kg, ensuring the stability and durability of the machine1.

　　Maximum digging depth: 6550 mm, suitable for digging operations of various depths1.

　　Bucket digging force: 132 kN, powerful digging force meets the needs of heavy-duty operations.

　　Fuel tank capacity: 320 L, ensuring fuel supply for long-term work1.

　　Hitachi EX120-5

　　The excavator is a high-performance engineering machinery, known for its powerful power, stable operating performance, efficient working ability, comfortable cab design, easy maintenance, high reliability and innovative technology applications. The following is a detailed introduction to the Hitachi EX120-5 excavator:

　　Basic configuration and technical parameters

　　Engine: Equipped with Isuzu A-4BG1T engine, providing strong power support6.

　　Working weight of the whole machine: The specific value is not mentioned, but it is inferred from the model that it is suitable for a variety of working conditions6.

　　Maximum digging depth: The specific value is not mentioned, but it is suitable for a variety of digging operations6.

　　Bucket digging force: The specific value is not mentioned, but it meets the needs of heavy-duty operations6.

　　Fuel tank capacity: The specific value is not mentioned, ensuring fuel supply for long-term work6.

　　These three excavators are now obsolete, and they are basically not seen in developed countries. However, if you pursue cost-effectiveness, you can still find used excavators with very good performance and price. But the risk is high, and professional personnel are requiredto inspect and maintain the purchase. Or go to Tiedou used excavator company for comprehensive testing, but this type of excavator is relatively scarce and difficult to see in the market, and those with good performance are even rarer.