Spannring 51mm Replacement: When and How to Swap It
By Kaffeemacher.de | Published: 2026-10-28
Category: How-to Guides
Learn when to replace the Spannring 51mm on your DeLonghi portafilter and follow simple steps to swap it yourself. Keep your espresso machine running smoothly.
Quick answer
Replace the Spannring 51mm when the portafilter no longer holds the basket securely or when you notice coffee grounds escaping around the edges. Swapping it takes just a few minutes with no special tools.
Why the Spannring matters
The Spannring 51mm is the small metal ring inside your DeLonghi portafilter that clamps the filter basket in place. Over time, it can lose tension or get bent, causing the basket to fall out when you knock out the spent puck. A worn ring also lets coffee bypass the basket, leading to messy extractions and channeling.
Replacing it restores proper fit and ensures your espresso routine stays consistent. The ring is made of robust spring steel, so it resists heat and moisture, but mechanical wear from daily use is normal.
When to swap it
Swap the Spannring if you notice any of these signs: the basket slides out too easily, the portafilter handle feels loose, or you see coffee grounds on the rim after tamping. Also replace it if the ring is visibly bent or rusted. A fresh ring costs very little and saves you from buying a new portafilter.
Step-by-step replacement
- Remove the old Spannring: Take the portafilter off the machine and pop out the filter basket. Use a small flathead screwdriver or a pick to pry the Spannring out of its groove. Work carefully around the edge to avoid scratching the portafilter. Common mistake: prying too hard can bend the portafilter rim. Go slowly.
- Clean the groove: Wipe the groove inside the portafilter with a damp cloth to remove coffee oils and debris. A clean groove helps the new ring sit flush. Checkpoint: make sure no old pieces of the ring remain.
- Install the new Spannring: Place the new 51mm Spannring into the groove and press it down evenly with your fingers. It should snap into place without forcing. Reinsert the filter basket; it should feel snug but not impossible to turn. Common mistake: if the ring is twisted or not fully seated, the basket will wobble. Press around the entire circumference.
Product fact
- Spannring 51mm: Ersatzteil für KM Siebträgerkopf Delonghi: Exakte Passform (51mm): Maßgeschneidert für die KM-Siebträgerköpfe (bodenlos und mit 2er-Auslauf) für DeLonghi-Maschinen. This exact 51mm fit ensures the basket stays locked during tamping and knocking, preventing accidents and uneven extraction.
Spannring 51mm: Ersatzteil für KM Siebträgerkopf Delonghi
