Espresso Filter Basket (Precision Perforated) in 316L Stainless Steel (AISI 316L (1.4404)) is used for holding and evenly extracting the coffee puck in an espresso portafilter through a precision-perforated, uniform hole field. The alloy gives superior resistance, including chlorides, brines, food CIP and mild acids and is essentially non-magnetic, with a practical service limit of approx. +550 °C continuous.
Alloy Properties
| Grade designation | AISI 316L (1.4404) |
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| Magnetic response | Essentially non-magnetic |
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| Service temperature | approx. +550 °C continuous |
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| Corrosion characteristic | Superior resistance, including chlorides, brines, food CIP and mild acids |
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Specifications of Espresso Filter Basket (Precision Perforated) Available in 316L Stainless Steel
| Size | Basket diameter (mm) | Depth (mm) | Dose (g) | Hole diameter (mm) | Hole count | Thickness (mm) |
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| 51 mm single | 51 | 18 | 7u20139 | 0.30 | 420 | 0.5 |
| 51 mm double | 51 | 22 | 14u201316 | 0.30 | 480 | 0.5 |
| 54 mm double | 54 | 23 | 16u201319 | 0.30 | 560 | 0.6 |
| 58 mm single | 58 | 19 | 7u201310 | 0.30 | 610 | 0.6 |
| 58 mm double | 58 | 25 | 18u201320 | 0.30 | 700 | 0.6 |
| 58 mm triple | 58 | 29 | 20u201322 | 0.28 | 760 | 0.6 |
| 58 mm pressurized | 58 | 24 | 14u201318 | 0.80 (single) | 1 | 0.6 |
Where 316L Stainless Steel Espresso Filter Basket (Precision Perforated) Is Used
- Espresso machine OEMs: single, double and pressurized baskets packed with home and commercial machines.
- Barista accessory brands: precision upgrade baskets for 58 mm prosumer machines.
- Café service & repair: replacement baskets that restore consistent shots on worn group heads.
- Coffee competitions & labs: tight-tolerance baskets for repeatable extraction research.
Ordering Espresso Filter Basket (Precision Perforated) in 316L Stainless Steel
- Diameter & depth: Match the portafilter: 51, 54 or 58 mm, and a depth that suits the dose so the screen does not imprint the puck.
- Hole size & count: Precision baskets hold 0.28–0.30 mm holes within a few microns over the whole floor; pressurized baskets use one exit hole.
- Spring groove: Specify the retaining-spring groove position for the portafilter brand or the basket will fall out when knocking.
Mistakes to Avoid with Espresso Filter Basket (Precision Perforated)
- Overdosing a basket — the puck touches the shower screen, cannot expand and channels.
- Using a pressurized basket with freshly ground specialty coffee; it masks the grind and caps flavor.
