Heidelberg M3.072.313S Sleeve Cpl for SM 74

The strongest open-source evidence I found identifies M3.072.313S/ as “Sleeve cpl” in Heidelberg SM 74 parts-list style sources. Two independent parts-list pages show the exact line SM 74 — M3.072.313S/ — Sleeve cpl, which is the clearest naming evidence available in the public results.

There is conflicting marketplace data: Equigraf lists the same number as “Sensor M3.072.313S” in an electric-parts category and on its product page. Because that description conflicts with the SM 74 parts-list wording, and I did not find an accessible Heidelberg eShop product page confirming “sensor,” I would not market this part as a sensor without checking the machine manual or internal Heidelberg documentation.

Part number and variants
The documented number appears as M3.072.313S and M3.072.313S/. In the sources I reviewed, the trailing slash looks like standard Heidelberg catalog formatting rather than a different functional variant. I did not find reliable evidence of additional suffix revisions such as /01 or /02 for this exact number in the accessible results.