Purchase Guide for 8-Ton Excavators
In the field of engineering construction, the 8-ton excavator, with its moderate size and wide applicability, has become a reliable assistant in many construction scenarios. However, there are numerous brands and models of 8-ton excavators on the market. How to select the product that best suits one's own needs has become a difficult problem faced by many purchasers. The following analyzes the key points for choosing an 8-ton excavator from multiple key dimensions.
I. Define the Working Environment and Working Condition Requirements
(1) Working Site Conditions
Space Limitations: If the construction site is relatively narrow, such as urban road pipeline network maintenance, indoor demolition and other operations, the excavator needs to have good mobility and a compact body design. For example, the Volvo EC80 excavator, as an 8-ton class small excavator, has outstanding operating flexibility in narrow spaces and can easily handle various working conditions with space limitations.
Terrain Conditions: In the face of uneven or soft ground, the stability of the excavator's chassis and its traveling performance are crucial. For instance, some 8-ton excavators with a widened and lengthened chassis design can provide better ground clearance and grip, and can maintain stable operation in complex terrains, reducing the risk of tipping over.
(2) Material Characteristics
Digging Objects: Different digging materials require different digging forces and bucket configurations for the excavator. When digging hard rock, it is necessary to select a model equipped with a high-torque engine and a high-strength bucket to ensure sufficient power for breaking and digging. If the main work is earthwork operations, the requirement for digging force is relatively lower, but more attention is paid to the operating speed and efficiency of the excavator.
Material Handling Distance: If it is necessary to frequently transport the dug materials to a relatively far location, the slewing speed and transportation convenience of the excavator become important considerations. Some 8-ton excavators are equipped with a quick slewing function, which can effectively shorten the material handling cycle and improve work efficiency.
(1) Working Site Conditions
Space Limitations: If the construction site is relatively narrow, such as urban road pipeline network maintenance, indoor demolition and other operations, the excavator needs to have good mobility and a compact body design. For example, the Volvo EC80 excavator, as an 8-ton class small excavator, has outstanding operating flexibility in narrow spaces and can easily handle various working conditions with space limitations.
Terrain Conditions: In the face of uneven or soft ground, the stability of the excavator's chassis and its traveling performance are crucial. For instance, some 8-ton excavators with a widened and lengthened chassis design can provide better ground clearance and grip, and can maintain stable operation in complex terrains, reducing the risk of tipping over.
(2) Material Characteristics
Digging Objects: Different digging materials require different digging forces and bucket configurations for the excavator. When digging hard rock, it is necessary to select a model equipped with a high-torque engine and a high-strength bucket to ensure sufficient power for breaking and digging. If the main work is earthwork operations, the requirement for digging force is relatively lower, but more attention is paid to the operating speed and efficiency of the excavator.
Material Handling Distance: If it is necessary to frequently transport the dug materials to a relatively far location, the slewing speed and transportation convenience of the excavator become important considerations. Some 8-ton excavators are equipped with a quick slewing function, which can effectively shorten the material handling cycle and improve work efficiency.
II. Pay Attention to Performance Parameters
(1) Power System
Engine Power: The engine power directly determines the power output and operating capacity of the excavator. Generally speaking, the greater the power, the stronger the digging force, and it can handle more complex and arduous tasks. However, at the same time, greater power also means relatively higher fuel consumption. Therefore, it is necessary to select an engine with a suitable power according to the actual operating intensity and working conditions to achieve a balance between power and economy. For example, the Yanmar 4TNV98 engine, which is commonly used in some 8-ton excavators, is equipped with a turbocharger, has strong power, and can maintain good performance under high-altitude working conditions, with strong adaptability to working conditions.
Fuel Economy: During long-term operation, fuel costs account for a large proportion. Excavators with high-efficiency energy-saving technologies can significantly reduce operating costs. For example, some 8-ton excavators that use advanced engine management systems or energy-saving hydraulic systems can reduce fuel consumption while ensuring operating performance by optimizing power transmission and distribution.
(2) Hydraulic System
Hydraulic Pump Performance: The hydraulic pump is the core component of the hydraulic system, and its flow rate and pressure determine the speed and force of each movement of the excavator. A high-performance hydraulic pump can achieve fast and smooth movements such as digging, slewing, and lifting, improving work efficiency. At the same time, the matching degree with the engine is also crucial. Good matching can avoid energy loss and give full play to the performance of the equipment.
Movement Coordination: An excellent 8-ton excavator can achieve smooth switching and compound operations between various movements. For example, slewing and unloading while digging, with coordinated and continuous movements, reducing the operation time. This depends on the advanced hydraulic control system and precise movement adjustment. For example, some excavators use a load-sensitive hydraulic system, with sensitive and accurate movement control, fast speed in common working conditions, smooth and coordinated compound movements, and excellent controllability.
(3) Working Equipment
Strength of the Boom and Arm: As the components directly performing the digging operation, the boom and arm need to have sufficient strength and durability. The boom and arm made of high-strength steel and The main arm and forearm, which have been optimized and strengthened, can withstand frequent high-strength operations, reduce the risk of deformation and damage, and extend the service life of the equipment.。
Bucket Design and Capacity: Different working scenarios require different types and capacities of buckets. The standard bucket is suitable for conventional digging operations; the rock bucket is specially designed for hard rock working conditions and has stronger wear resistance; and the bucket with an increased capacity can increase the single digging volume and is suitable for operations with a large amount of earthwork and soft materials. You can select a suitable bucket configuration according to the actual operating requirements, and if necessary, you can also consider equipping multiple buckets to cope with diverse working conditions.
(1) Power System
Engine Power: The engine power directly determines the power output and operating capacity of the excavator. Generally speaking, the greater the power, the stronger the digging force, and it can handle more complex and arduous tasks. However, at the same time, greater power also means relatively higher fuel consumption. Therefore, it is necessary to select an engine with a suitable power according to the actual operating intensity and working conditions to achieve a balance between power and economy. For example, the Yanmar 4TNV98 engine, which is commonly used in some 8-ton excavators, is equipped with a turbocharger, has strong power, and can maintain good performance under high-altitude working conditions, with strong adaptability to working conditions.
Fuel Economy: During long-term operation, fuel costs account for a large proportion. Excavators with high-efficiency energy-saving technologies can significantly reduce operating costs. For example, some 8-ton excavators that use advanced engine management systems or energy-saving hydraulic systems can reduce fuel consumption while ensuring operating performance by optimizing power transmission and distribution.
(2) Hydraulic System
Hydraulic Pump Performance: The hydraulic pump is the core component of the hydraulic system, and its flow rate and pressure determine the speed and force of each movement of the excavator. A high-performance hydraulic pump can achieve fast and smooth movements such as digging, slewing, and lifting, improving work efficiency. At the same time, the matching degree with the engine is also crucial. Good matching can avoid energy loss and give full play to the performance of the equipment.
Movement Coordination: An excellent 8-ton excavator can achieve smooth switching and compound operations between various movements. For example, slewing and unloading while digging, with coordinated and continuous movements, reducing the operation time. This depends on the advanced hydraulic control system and precise movement adjustment. For example, some excavators use a load-sensitive hydraulic system, with sensitive and accurate movement control, fast speed in common working conditions, smooth and coordinated compound movements, and excellent controllability.
(3) Working Equipment
Strength of the Boom and Arm: As the components directly performing the digging operation, the boom and arm need to have sufficient strength and durability. The boom and arm made of high-strength steel and The main arm and forearm, which have been optimized and strengthened, can withstand frequent high-strength operations, reduce the risk of deformation and damage, and extend the service life of the equipment.。
Bucket Design and Capacity: Different working scenarios require different types and capacities of buckets. The standard bucket is suitable for conventional digging operations; the rock bucket is specially designed for hard rock working conditions and has stronger wear resistance; and the bucket with an increased capacity can increase the single digging volume and is suitable for operations with a large amount of earthwork and soft materials. You can select a suitable bucket configuration according to the actual operating requirements, and if necessary, you can also consider equipping multiple buckets to cope with diverse working conditions.
