Why Are The Bore Sizes Of Rodless Cylinders 32 And 63, But Not Integer Values 30 And 60?
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In the 1940s, pneumatic rodless linear actuator was widely used in the industrial field, until rodless cylinder pneumatic began to be distinguished from hydraulic cylinders. The specific use occasions were also a major breakthrough of cylinder rodless, changing the original medium to compressed gas, and making a major breakthrough in the technology and process of long stroke rodless cylinder.
At the end of the 19th century, French industrial scientist Renault (Renault Automobile was named after him) invented the priority coefficient. What is the priority series? The priority number series is a set of approximate geometric series derived from theoretical geometric ratios whose common ratios are the 5th, 10th, 20th, 40th, and 80th roots of 10, and whose terms contain integer powers of 10.
R10 coefficient, the common ratio is 1.25 1 1.2 1.6 2.0 2.5 3.2 4.0 5.0 6.3 8.0. After magnifying ten times, it is 12.5 12 16 20 25 32 40 50 63 80. It can be repeated infinitely, just like 1 2 3 4 5 6 7 8 9, it can be added, subtracted, multiplied and divided. The same is true for the R20 series, which also has geometric ratio values. The future development of low profile rodless air cylinder does not rule out the emergence of smaller and more miniature sizes. Therefore, the R10 coefficient 3.2 multiplied by 10 is equal to 32, and the 6.3 coefficient multiplied by 10 is equal to 63. Therefore, the cylinder diameter of pneumatic rodless actuators is 32 instead of 30, and the reason is 60 instead of 63.
