Excavator Lifting Capacity Parameters
Key Parameters.
Rated Lifting Capacity: This is the maximum weight an excavator can safely lift under normal operating conditions. For example, the rated lifting capacity of a 150-ton excavator is 150 tons.
Maximum Lifting Torque: This refers to the maximum rotational torque an excavator can generate when lifting a load, measured in ton-meters. It is related to the lifting capacity and lifting radius, reflecting the excavator’s lifting capability at different working radii. For example, a 150-ton excavator might have a maximum lifting moment of 600 ton-meters.
Maximum Lifting Height: This is the maximum height above the ground that a load can reach when lifted by the excavator. For example, some excavators have a maximum lifting height of 15 meters.
Lifting Capacity at Different Working Radii; An excavator’s lifting capacity varies depending on the working radius (the distance from the lifting point to the machine’s center of gravity). Generally, the farther the distance, the lower the lifting capacity. For example, the Volvo EC240BLC excavator can lift up to 10,430 kg directly in front of the machine when the bucket is removed from the end of the boom and the distance from the center of gravity is 3.0 m, whereas the lifting capacity drops to 5,280 kg at a distance of 6.0 m.
Factors Affecting Specifications.
Excavator-Specific Factors.
Tonnage: Generally, excavators with higher tonnage tend to have higher lifting capacity specifications. For example, the small Shanhe Intelligent 08 crawler excavator has an operating weight of approximately 1,010 kg and limited lifting capacity; whereas the large Bangli Heavy Machinery 1000 crawler excavator has an operating weight of 99,000 kg and very strong lifting capacity.
Configuration: Excavators with higher engine power and better hydraulic system performance typically provide greater power and pressure, resulting in superior lifting capacity.
Operating environment factors.
Ground conditions: If the ground is soft or uneven, it can affect the excavator’s stability, thereby reducing its lifting capacity.