2011-04-29
What kind of excavator is more suitable for oneself? If you don't even know the characteristics of each brand of excavator, you may have no way to start buying one. Price and cost-effectiveness are the key, maximizing the use of money on the cutting edge.
CAT
Features: Good mechanical compatibility, hydraulic system super cow, average action, durability, value preservation, strength first, price first in the market.
Disadvantages: The earthwork process is too slow, fuel consumption is high, accessories are expensive, and the maintenance cost of the machine is high. The engine burns oil, which is prone to high temperatures and high water temperatures. Short arms.
Kato
Features: Stable quality, low failure rate. Strong power, strong force, fast speed, and high efficiency. Fuel efficient, value preserving, and durable. Value preservation and durability. Earth King.
Disadvantage: It is not as strong as CAT in making stones and tends to crack.
Komatsu
Features: Good mechanical compatibility, hydraulic system super powerful, flexible action, durability, value preservation, low operating cost, average fuel consumption, moderate to high strength.
Disadvantages: PC-8 machines have high fuel consumption, unstable walking body mass, and high maintenance costs for engine electronic fuel injection. The walking reducer often malfunctions and is prone to oil leakage after 2000 hours of operation. Now it is a domestically produced Cummins engine with a short lifespan, a significant decrease in power after two years, and high maintenance costs. The walking device and working device have five compound actions, resulting in low work efficiency and inability to self rescue. The depreciation rate is high, and products over three years old are more than 100000 to 200000 yuan cheaper than products of the same tonnage and grade. The domestic production rate is high, and even the engine and motor are domestically produced. When working for 6000-7000 hours, the walking motor is likely to break down!
Hitachi
Characteristics: The mechanical compatibility is average, the hydraulic system is average, the action is flexible, the durability is average, the value retention is average, the usage cost is average, the fuel consumption is average, and the power is above average.
Disadvantages: Not durable, there will be many problems after two or three years, mainly due to high water temperature and hydraulic system. Currently, the No. 20 unit has been replaced with four deficient engines, which only increase the cylinder diameter and reduce the displacement, so it is not very daring to use them. Love oil leakage, that is, the main control valve oil leakage is very common, there is a saying of fried Hitachi! The hydraulic system and engine will have problems every 2-3 years. Repairing cars will bankrupt you.
Kobelco
Fast speed, fuel-efficient, labor-intensive. The imported Kobelco is good, but now even domestic engines are used. It's better to buy a LiuGong engine, which is still imported from Cummins. The circuit has defects.
Volvo
Features: General mechanical compatibility, lower hydraulic system (Korean hydraulic), slow movement, generally durable, lower resale value, average operating cost, low fuel consumption, medium to high power, ranking second and third in the price market.
Disadvantage: It's the former Samsung, which was later bought by Volvo. It's clearly a Korean car, but it's just for marrying into a wealthy family. There are many Korean accessories (many people are fooled into thinking they are from Sweden), with average fuel consumption and high comfort. After two or three years of use, the maintenance cost is high, and the key is that the accessories are expensive, making it inconvenient to buy them. The requirements for oil are quite high.
JCB
JCB services cannot keep up, with high fuel consumption and expensive accessories; The design of the diesel pump is unreasonable, and the snap ring is prone to breakage. Once it breaks, it cannot be purchased and must be replaced completely. Hydraulic system leakage is a common problem, and the sealing performance of each hydraulic cylinder is poor. Leakage will occur after about ten hours of operation. All accessories have poor universality. It is basically not compatible domestically, including machine filters and diesel filters, and it is difficult to buy accessories. High maintenance costs and difficult fault repair! The hydraulic cylinder is actually made of ordinary steel pipe, which is prone to needle like small holes and can crack! The walking device is prone to wear and tear, the air conditioning design is poor, and the cooling is also poor. It's not easy to sell even if you want to.
Daewoo
Excavators are cheap, have average fuel consumption, are not durable, and do not retain their value. Hurry up and sell it for a new one after using it for four years, otherwise the cost of maintaining the machine will be too high
The characteristics of the above brands are also applicable to second-hand excavators, edited and sorted by Shanghai Huacheng, and collected from the Internet does not represent online comments; For reference only.
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