Positioning of the stirring shaft
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Today, I found the mixing shaft for the 55 m³ tank; its positioning system is located in the middle, and it is made of metal without any PTFE lining, which seems unreasonable and poses a safety risk. What I use and see is all at the bottom, and it has a PTFE sleeve.
The material of the positioning sleeve also depends on the requirements of the materials inside the tank, with temperature being a relevant factor as well. Generally, the temperature of PTFE should not exceed 150 degrees, as higher temperatures can cause it to soften. In addition to PTFE, ceramic or graphite sleeves can also be used as alternatives for linings. Among metal sleeves, ductile iron sleeves are the most common, as they also possess decent self-lubricating properties
Thank you. -------------------------
See what metal it is; generally, it makes more sense for the material of the bushing to have a lower hardness than that of the mixing shaft
Thank you. －－－－－－－－－－－－－－－－－－－－－－－
The middle or the bottom will work; actually, the middle is better, as the bottom wobbles too much
A tank of 55 cubic meters isn’t very large; what is your height-to-diameter ratio? It is recommended to avoid using intermediate or bottom supports