What do the R10, R50 and R80 marked on the bending part in the busbar drawing mean

In busbar drawings, R usually represents the radius (Radius), and the following number represents the specific value of the radius.

Busbar drawings are an integral part of electrical engineering, detailing the layout, dimensions and installation requirements of a busbar system. In busbar drawings, you can often see labels such as R10, R50 and R80. So what do these labels mean?
First, we need to clarify the basic composition of the busbar drawing. Busbar drawings usually include detailed information such as busbar model, specifications, length, bending radius, connection method, etc. This information is crucial for the installation, commissioning, operation and maintenance of the busbar system. Among them, bending radius is a common label in busbar drawings, and R10, R50 and R80 represent the specific values of bending radius.
In busbar drawings, R usually represents the radius (Radius), and the following number represents the specific value of the radius. Therefore, R10 means that the radius of the busbar bending is 10 units of length, R50 means that the radius of the busbar bending is 50 units of length, and R80 means that the radius of the busbar bending is 80 units of length. The unit length here may be millimeters, centimeters, inches, etc., depending on the marking specifications of the drawing.
The marking of the busbar bending radius is of great significance to the design and installation of the busbar system. First of all, the size of the bending radius directly affects the electrical performance of the busbar. During the power transmission process, the busbar will generate a certain amount of current and electromagnetic field. If the bending radius is too small, it may cause uneven current distribution, increase resistance and loss, and thus affect the efficiency of the busbar system. Therefore, when designing the busbar system, the bending radius needs to be reasonably selected based on factors such as current size, busbar material, and working environment.
Secondly, the marking of the bending radius also helps the installer to install the busbar correctly. During the installation process, the installer needs to bend the busbar according to the specified bending radius according to the markings on the drawing. If the bending radius does not meet the requirements, the busbar installation may not be secure and the risk of failure may increase. Therefore, the installer needs to read the drawings carefully to ensure that the busbar is installed in accordance with the marking requirements.
In addition, the bending radius markings in busbar drawings also help maintenance personnel inspect and maintain the busbar system. During the operation of the busbar system, the bending radius of the busbar may change due to various reasons. Maintenance personnel can check the markings on the drawings to promptly detect and handle the busbar bending radius that does not meet the requirements to ensure the normal operation of the busbar system.


The R10, R50 and R80 marks in the busbar drawings represent the radius of the busbar bending. These markings are of great significance in the design and installation process of the busbar system and help ensure the electrical performance, installation quality and operational stability of the busbar system. Therefore, in power engineering, we need to pay full attention to these annotations in busbar drawings, and strictly follow the annotation requirements to design and install the busbar system.

If you normally plan to purchase busbar bending machine and have special and detailed requirements for busbar bending, please contact us now. We can customize the busbar bending mold according to the busbar processing drawings you provide, including any bending radius size from 3mm to 80mm.

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