The safest technical name for F2.028.011/03 is Pulley for Toothed Belt or Toothed Belt Pulley. That exact wording appears in product listings and XL 105 parts-list references, making it the clearest industry term for an ecommerce product page.
Public source evidence is strongest for Heidelberg XL 105. An XL 105 parts list explicitly shows F2.028.011/03 – Pulley for toothed belt, and other inventory-style parts pages repeat the same XL 105 association.
Some aftermarket suppliers list the base reference F2.028.011 for XL105, XL106, CD102, CX102, SM102, and SX102, and one retail listing also describes it as a toothed-belt pulley sized about 75 × 24 × 42 mm for XL105 / CD102 / SM102. Because those broader model claims come from reseller and marketplace sources rather than Heidelberg-origin documentation, they should be treated as secondary compatibility and verified against the installed part before ordering.
Confirmed compatibility
- Heidelberg XL 105
Additional reported compatibility — verify before ordering
- Heidelberg XL 106
- Heidelberg CD 102
- Heidelberg CX 102
- Heidelberg SM 102
- Heidelberg SX 102
These models are reported for the base reference F2.028.011 in aftermarket listings, but I did not find equally strong evidence specifically tying all of them to the exact suffix /03.
Part number verification
- Exact requested reference: F2.028.011/03
- Base part family found in listings: F2.028.011
Documented variation
- The exact suffix version F2.028.011/03 is documented in seller and parts-list sources.
- Trade-data sources also show F2.028.011/05, which suggests there are revision or application variants within the same pulley family.
- I did not find reliable evidence that /03 and /05 are interchangeable, so the installed suffix should be matched exactly before purchase.
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