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12-ton excavators are very mainstream models, with advantages such as convenient transportation, multiple types of work, and low prices. In particular, classic used excavators are very reliable except for the appearance damage. Usually, the price is 10.000-30.000 US dollars. The longer the factory date and the longer the working time of the excavator, the cheaper the price. Some old models such as CAT312C, Komatsu PC120-6. Hitachi EX120-5. Kobelco SK130-6. etc. are basically eliminated, and the price is very cheap. Some good performance can also be found, but the risk is relatively high. We still don’t recommend it without professional technicians. TD must conduct strict testing and maintenance on each excavator, and unqualified TD will not be sold to the outside.
The mainstream used excavator models are also export models, such as CAT312D/D2. Komatsu PC120-7/8. Komatsu PC130-7/8. Hitachi ZX120-5 series, Volvo EC140 series and Kobelco 140-8 series. These models are relatively recent, especially the previous generation of direct injection engines, which can be purchased at around US$15.000. Although the comparison of excavator parameters is not very meaningful, it still gives you an intuitive reference to the specification information.Tiedou
Caterpillar 312D excavator
Specifications
Working weight of the whole machine: 12920 kg
Standard bucket capacity: 0.52 cubic meters
Engine model: C4.2ACERT
Fuel tank capacity: 250 L
Maximum digging depth: 5840 mm
Bucket digging force: 96 kN
Performance characteristics
The Caterpillar 312D excavator is equipped with an engine independently developed by Caterpillar, which has high power and high torque output, and can provide strong digging ability and efficient operating performance. In addition, it has a flexible steering system and smooth operating feel, which facilitates the driver to perform precise digging operations. At the same time, the excavator is also equipped with a variety of working modes and auxiliary functions to meet different operating needs.
Komatsu 120-8 Excavator
Specifications
Machine operating weight: 12 tons
Engine model: Komatsu S4D105-5
Fuel tank capacity: The specific capacity is not clearly mentioned, but Komatsu excavators are usually equipped with large-capacity fuel tanks to support long-term operations
Maximum digging depth: The specific value is not clearly mentioned, but Komatsu excavators are known for their powerful digging capabilities
Performance characteristics
Efficient working ability: Equipped with a powerful engine and advanced hydraulic system, it provides excellent working performance and efficient working ability
Flexible and multifunctional: It has a unique rotating mechanism that can rotate 360 degrees to adapt to various working environments
Easy to operate: The cab is equipped with an advanced control system and a comfortable seat, which is easy to operate
Durable and reliable: It adopts a sturdy and durable structural design and high-quality materials, with good durability and reliability
Easy to maintain: It is very convenient to maintain and repair, easy to overhaul, and reduces maintenance time and cost
Volvo 140 Excavator
Specifications
Engine model: Volvo D4D, with an output power of 69 kW (94 metric hp), with a maximum torque of 390 Nm
Operating weight of the whole machine: The specific value is not explicitly mentioned, but Volvo excavators are known for their powerful digging capabilities
Maximum digging depth: The specific value is not explicitly mentioned, but Volvo excavators can provide excellent digging capabilities
Fuel tank capacity: 260 L, ensuring long-term operation
Hydraulic oil tank capacity: 100 L, supporting efficient hydraulic system operation
Performance characteristics
Fuel efficiency: The Volvo 140 excavator is equipped with an efficient engine and advanced hydraulic system, providing excellent fuel efficiency
Durability: The use of durable components and a solid structural design can provide excellent performance even in harsh conditions
Reliability: The Volvo 140 excavator has a solid structure and accessories to ensure reliability on the job site
Operational performance: The spacious cab provides a good view and a comfortable working environment, reducing operator fatigue and improving work efficiency8
Hitachi ZX120 excavator
Specifications
Operating weight of the whole machine: 12200 kg
Bucket capacity: 0.52 m³
Engine model: ISUZU CC-4BG1TC
Rated power: 66/2150 kw/rpm
Fuel tank capacity: 250 L
Maximum digging depth: 5570 mm
Bucket digging force: 99 kN
Travel speed: 3.4/5.5 km/h
Slewing speed: 13.7 rpm
Gradability: 70/35°
Ground pressure: 37 kpa
Performance characteristics
Powerful & low fuel consumption engine: The use of an intercooler with excellent combustion efficiency helps to achieve the best match between power and fuel efficiency. Through the perfect combination of HIIOS hydraulic system, the engine speed is optimally controlled, thus effectively reducing fuel consumption
The automatic acceleration function reduces fuel consumption: by operating the joystick, the engine speed is controlled, and fuel consumption is reduced during light-load operations such as leveling and finishing
Walking force and rotation force: the rotation and squeezing performance is improved, and the rotation performance of slope operations is improved
The rapid switching of working modes under different working conditions: powerful excavation, leveling and fine operations can be performed, and the attachment mode can be combined with the hydraulic breaker to adjust the oil volume
The pursuit of reliable durability: the front end parts use HN bushings, the thickness of the bucket rod is increased, and the four sides are reinforced with reinforcement plates, and the bucket connecting pin is filled with grease through the support
Equipped with CRES (central pillar reinforcement structure) cab: the central part of the cab adopts a cross-section closed structure pillar, which improves the overall strength and rigidity of the cab and ensures higher safety
There are many factors in the selection of used excavators. Don't choose because of a little advantage in the performance parameters and specifications of the excavator. You should consider the purchase of accessories, technical services, and maintenance of the brand in your country. For users who consider the rate of return, it is best to choose previous generation products with mature technology and good reputation, which can save a lot of expenses on subsequent repairs and maintenance.
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