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Tire excavators are not like crawler excavators, which can be as high as 100 tons or even more in size and weight. The use range of tire excavators was introduced in the previous issue. Conventional tire excavators will not exceed 30 tons unless they are specially customized. Most manufacturers control the maximum tonnage of mainstream tire excavator models to about 20 tons. Moreover, the sales volume of large-tonnage tire excavators is not high, the main purchasing group is small, and the price of tire excavators is also higher than that of crawler excavators. These four Caterpillar tire excavators are also the last issue of Caterpillar's new excavator series in recent years.Tiedou
Although the bucket capacity of medium-sized tire excavators is smaller than that of crawler conventional excavators, tire excavators are mainly convenient to move in cities, and the moving speed is much higher than that of crawler excavators. Work in the city, whether it is simple earthwork or the installation of various accessories, basically meets more than 98% of urban projects. In particular, the installation of hydraulic breakers, wood clamps and special customized accessories are loved by the majority of users. In Tiedou's 2024 market survey, the comprehensive sales of tire excavators only accounted for 11% of the comprehensive sales of excavators, and only one in every ten excavators sold. In some countries, the sales ratio of tires to crawler excavators even reached more than 1/100. Most people choose tire excavators mainly because the price of tires is higher, the performance is different in the same level, and the maintenance cost of tires is higher than that of crawlers. In addition, the maintenance cost is also different. In addition, tire excavators are basically unable to compare crawler excavators for high-slope work, especially in rainy days or other bad weather.
Caterpillar CAT M318
Main parameter configuration and specification information:
Engine: Model Cat C4.4 ACERT, power 174 horsepower (129kW), emission standard Tier 4 Final/Stage V.
Working weight: standard configuration 19.800kg.
Hydraulic system: pump flow 290L/min, working pressure 350bar.
Bucket capacity: 0.8-1.2 cubic meters.
Maximum digging depth: 6.15 meters, maximum digging radius 9.45 meters.
Transport dimensions: length 8.8 meters, width 2.55 meters, height 3.2 meters.
Other features: equipped with automatic idle control, efficient hydraulic system, comfortable cab design.
Caterpillar CAT M319
Main parameter configuration and specification information:
Engine: Model is Cat C4.4 ACERT, power 174 horsepower (129kW), emission standard Tier 4 Final/Stage V.
Working weight: standard configuration 21.000kg.
Hydraulic system: pump flow 310L/min, working pressure 350bar.
Bucket capacity: 1.0-1.3 cubic meters.
Maximum digging depth: 6.5 meters, maximum digging radius 9.8 meters.
Transport dimensions: 9.0 meters in length, 2.55 meters in width, and 3.25 meters in height.
Other features: equipped with automatic idle control, efficient hydraulic system, and comfortable cab design.
III. Main differences
Operating weight: CAT M318 is 19.800kg, and CAT M319 is 21.000kg.
Hydraulic system: The pump flow of M319 is slightly higher than that of M318 (310L/min vs. 290L/min).
Bucket capacity: The bucket capacity range of M319 is larger (1.0-1.3 cubic meters vs. 0.8-1.2 cubic meters).
Maximum digging depth and radius: M319 has a slight advantage in digging depth and radius.
Dimensions: The transport dimensions of the M319 are slightly larger than those of the M318.
Caterpillar CAT M320
Engine: Cat C7.1. Power 174 horsepower (129kW), emission standard Tier 4 Final/Stage V.
Working weight: 21.800kg.
Hydraulic system: pump flow 375L/min, working pressure 350bar.
Bucket capacity: 0.8-1.2 cubic meters.
Maximum digging depth: 6.67 meters, maximum digging radius 10.2 meters.
Transport dimensions: 9.2 meters long, 2.55 meters wide, 3.4 meters high.
Features: automatic idle control, efficient hydraulic system, comfortable cab design, standard multi-function display and adjustable seat.
Caterpillar CAT M322
Engine: Cat C7.1. Power 174 horsepower (129kW), emission standard Tier 4 Final/Stage V.
Working weight: 23.500kg.
Hydraulic system: pump flow 375L/min, working pressure 350bar.
Bucket capacity: 1.0-1.3 cubic meters.
Maximum digging depth: 7.21 meters, maximum digging radius 10.9 meters.
Transport dimensions: 9.45 meters long, 2.55 meters wide, 3.45 meters high.
Features: automatic idle control, efficient hydraulic system, comfortable cab design, standard multi-function display and adjustable seat.
3. Main differences
Working weight: M320 is 21.800kg, M322 is 23.500kg.
Bucket capacity: M322 has a wider capacity range (1.0-1.3 cubic meters vs. 0.8-1.2 cubic meters).
Excavation depth and radius: M322 has advantages in excavation depth and radius, with a depth of 7.21 meters vs. 6.67 meters and a radius of 10.9 meters vs. 10.2 meters.
Size: M322 is slightly larger than M320. Length 9.45 meters vs. 9.2 meters, height 3.45 meters vs. 3.4 meters.
The four tire excavators introduced today, M318 and M319. belong to the same level, with the same engine model and power, but the overall weight and maximum hydraulic flow of M319 are higher than M318. which can be understood as the difference between low-power and high-power versions. The basic bucket capacity drop is 0.1-0.2m³.
The M320 and M322 are very different from the above two models. First of all, the engine is equipped with Cat C7.1. which is higher than the above two versions in terms of overall specifications and size. However, the difference in the working efficiency of these four tire excavators in actual work is not large. There are slight differences mainly in working height and digging depth. If users need tire excavators, they should refer to the price and their own engineering needs before purchasing.
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