Hydraulic robotic arms can become the best choice for extreme working conditions such as high temperature, high pressure, heavy load, and high dust. The core lies in their power characteristics, environmental adaptability, and reliability, which perfectly match the core requirements of "extreme load+harsh environment+continuous operation" under such working conditions. This is reflected in three dimensions:

　　Hydraulic robotic arm

　　1、 Power characteristics: adapted to extreme working conditions for "heavy load and impact resistance requirements"

　　Extreme working conditions (such as mining, steel smelting, and deep-sea operations) commonly involve "super large loads" and "instantaneous impacts", which are the core advantages of hydraulic systems:

　　High power density, irreplaceable carrying capacity: The hydraulic system transmits power through liquid pressure, and the thrust/torque output under the same volume far exceeds that of electric and pneumatic robotic arms. For example, hydraulic robotic arms used in mines can carry over 200 tons of ore on a single arm, and hydraulic robotic arms used in deep-sea salvage can withstand the pulling force of 100 ton heavy objects underwater. However, the load capacity of electric robotic arms of the same volume is only 1/3-1/5, which cannot meet the heavy load requirements of extreme working conditions.

　　Strong impact resistance and ability to cope with load fluctuations: In extreme working conditions, the load often changes suddenly (such as the center of gravity of the steel ladle in a steel plant shifting, mining machinery grabbing irregular rocks). The hydraulic system can quickly relieve the instantaneous overload pressure through overflow valves and buffer cylinders, avoiding damage to the mechanical structure; However, electric robotic arms rely on motor torque control, which can easily burn out the motor due to excessive current when overloaded, making it difficult to cope with fluctuations in operating conditions.

　　2、 Environmental adaptability: able to withstand extreme working conditions of "harsh environmental erosion"

　　Special environments such as high temperature, high dust, high humidity, and strong vibration can directly lead to the failure of electric and pneumatic equipment, while hydraulic robotic arms achieve "hard resistance" through structural and component design:

　　High temperature and dust resistance: Hydraulic oil itself has lubrication and cooling effects, and with high-temperature resistant seals (such as fluororubber materials), hydraulic robotic arms can operate continuously in high temperature environments above 150 ℃ (such as continuous casting workshops in steel plants); At the same time, a closed hydraulic circuit can isolate dust and slag, avoiding short circuits or wear caused by dust accumulation like in the motors and circuits of electric robotic arms.

　　Anti vibration and moisture resistance: Hydraulic components (such as oil cylinders and valve bodies) are mostly metal rigid structures, with much stronger anti vibration capabilities than precision gears and sensors of electric motor arms; In humid environments such as deep sea and underground mines, hydraulic systems do not need to worry about circuits being affected by moisture and short circuiting. They only need to be treated with anti-corrosion measures to operate stably, while electric equipment requires additional complex waterproof and explosion-proof devices, which are costly and unreliable.

　　3、 Reliability and endurance: meeting the "continuous operation requirements" of extreme working conditions

　　Extreme working conditions (such as 24-hour loading and unloading in ports and continuous mining in mines) require extremely high "trouble free operation time" for equipment, and hydraulic robotic arms have significant advantages in stability and endurance:

　　Simple structure and low failure rate: The hydraulic system has fewer core components (oil cylinders, hydraulic pumps, valve groups) and less mechanical wear. Compared with the motor, reducer, and servo system of the electric robotic arm, the number of failure points is reduced by more than 40%; Moreover, hydraulic failures are mostly local problems (such as aging seals), and maintenance does not require dismantling complex circuits. The downtime can be shortened to 1-2 hours, much lower than the 4-8 hours of electric equipment.

　　Continuous endurance without attenuation: Hydraulic power can be continuously supplied through diesel pumps and hydraulic stations, without relying on batteries or the power grid. In extreme working conditions without power supply (such as field engineering and deep-sea operations), it can be operated continuously for several days through its own power source; However, electric robotic arms are limited by battery capacity or grid coverage, which can easily affect their range and cannot meet the demand for long-term uninterrupted operation.