Home / What is the service life of an injection molding robot arm?

What is the service life of an injection molding robot arm?

2024/05/03 By 兰兹

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The injection molding robot arm is an auxiliary device that can help the injection molding machine grab materials during injection molding. It is usually located on top of the machine. These robotic arms can perform precise and repetitive movements, handling parts quickly and accurately. Therefore, many manufacturers will ask about their service life when purchasing, which can also affect the future layout of their entire production line. So, in this article, we will help you to understand its service life and the factors that affect it.

Service life of injection molding robot arm

Topstar’s injection molding robot arms‘ typical service life should be 8 to 15 years. The robotic arm will be made of lightweight aluminum alloy to withstand the rigors of continuous industrial use. The DC bus technology used saves 10% of the overall energy. It adds automatic servo OFF so that the motor can stop powering when the servo is on standby. It reduces the power cost by 10%, avoiding too much energy consumption during operation and reducing the service life.

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Quality of injection molded robotic arm components and structures

The quality of the parts and structure of the injection molded robotic arm fundamentally determines its service life. Structural components, joints, and shells are usually made of high-grade materials such as high-quality aluminum alloy. These materials were chosen for their sufficient strength, wear resistance, and ability to withstand the mechanical stresses of the injection molding machine. Rack-and-pinion meshing transmission is used at the front and rear to achieve higher positioning accuracy. This precision engineering ensures smooth movement and reduces friction at the joint interface, reducing the risk of premature wear.

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Operation frequency and workload

The service life of an injection molding robotic arm is also closely related to its operating frequency and workload. High-frequency operations usually lead to faster wear of mechanical components such as joints, gears, and bearings. Workload refers to the force or weight the robotic arm handles during operation. This also includes the forces exerted on the arm during movement. Generally, the structure determines the applicable load range of the injection molding robot arm. Exceeding the standard load weight will accelerate the fatigue of the metal structure and the wear of precision components such as servo motors and hydraulic systems, thereby shortening the overall service life.

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Maintenance and preventive care

The relationship between maintenance and preventive care and the service life of the injection molding robot is the basis for ensuring optimal performance and service life. During daily operations, routine inspections, lubrication of moving parts, and replacement of worn parts are required. Maintenance work can minimize the wear and tear of critical components. This proactive approach maintains the structural integrity of the robotic arm, preventing premature failure and extending its service life. Proper lubrication reduces friction, allowing for smoother movement and less stress on mechanical components. Regular inspections and proactive component replacement reduce the likelihood of unexpected failures, ensuring continuous operation and production continuity.

Environmental conditions

Environmental factors will also indirectly affect the durability and function of the robotic arm. Wear will be accelerated if exposed to adverse temperature conditions, leading to premature failure. High temperatures can cause the injection molding robot’s motor and drive system to overheat, causing thermal stress on electronic circuits and causing control system failure. Temperatures too low can cause lubricants and hydraulic fluids to harden, reducing their effectiveness and increasing friction in moving parts. Humidity is also an important environmental factor. High humidity can promote corrosion of metal components and condensation in electronic systems, which can lead to short circuits or component oxidation. Therefore, we need to control the temperature well in the injection molding workshop, and a dehumidifier can be added to alleviate these problems.


The service life of injection molding robot arms typically ranges from 8 to 15 years. Factors affecting their service life include component quality, frequency of operation, and maintenance methods. In addition to choosing high-quality injection molding robot arms, you can protect them and extend their service life by implementing proper maintenance.

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