PSL can supply non-standard designs to allow movements greater than Range 3 (37.5 mm). For our project sliding plates are required for shoes with movements greater than 200 mm. We would appreciate it if you could inform us about the way to select sliding plates in cases of high temperatures and high movements. We are going to use standard shoes and they are different from PSL pipe clamp bases with high movements. Would it be possible to request sliding plates with different dimensions according to different requirements?

This extract is taken from the PSG catalogue: Design for Large Movement.

We can supply non-standard designs of types ES07 to ES12 to allow for movements greater than Range 3 (+/-37.5mm).
For pipework applications with very large horizontal movements, the standard design of PTFE / stainless steel bearing with the large upper plate may not be practical. Large lateral movement could cause the pipe shoe to twist around the pipe, or a twisting moment can be applied to the pipe which is also undesirable. In these circumstances, it may be preferable to install the bearing with the smaller PTFE-bearing plate at the top. PTFE on PTFE designs with overlapping strips of PTFE can also be considered. Note that an increased coefficient of friction will apply for PTFE-on-PTFE bearings and a lower bearing pressure should be used.

For ES07 to ES12 bearings at higher temperatures, you need to downrate the load capacity by using the graph showing máximum bearing pressure on P136 of the catalogue.

Neither shape offers any great benefit, but a square, rather than circular, shape can be more economic as there is less scrap when cutting from a square sheet. The key factor is to ensure adequate surface contact area. Please refer to our catalogue for guidance on allowable bearing pressure, and take account of ambient temperatures since these will also affect the allowable bearing pressure.