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The Thesvin coffee machine filter basket is a stainless steel filter designed to retain coffee grounds while allowing brewed coffee to flow through, for use in espresso, drip, and capsule coffee machines. It fits into the portafilter or brew group, where its frame and rim locate and seal against the machine. The basket is aimed at appliance makers, coffee equipment OEMs, and brand owners who need a reliable, food-contact-compliant filter with custom fitment options.
Fitment is the first consideration in any filter basket project. The basket must sit flush in the portafilter or brew chamber, with the rim sealing against the group head gasket to prevent bypass. Thesvin manufactures baskets to match the host device's interface: the outer diameter, rim profile, and depth are built to your drawing or original part, so the basket locks in without modification to the machine.
We produce baskets in standard single and double shot sizes, as well as custom capacities, and can adjust the hole pattern and perforated area to suit the desired flow rate. The stainless steel construction provides dimensional stability under heat and pressure, so the basket retains its shape through repeated brewing cycles. For OEM projects, we can also incorporate features such as a retaining ridge or a specific handle interface if your design requires it. All fitment dimensions are confirmed against your sample or CAD data before production.
The primary function of the basket is to separate coffee grounds from the brewed liquid. The perforated stainless steel surface retains particles while allowing the coffee to pass through, and the hole size and distribution influence the extraction profile. Thesvin controls hole diameter and spacing to achieve consistent flow and reduce channeling.
In machines that use a water filter cartridge in addition to the basket, Thesvin also supplies filter media for water treatment. Those cartridges use natural coconut shell activated carbon and food-grade sodium or hydrogen ion exchange resin to reduce chlorine, odor, heavy metals, and scale-forming calcium and magnesium ions, helping to protect the machine and maintain coffee flavor. The basket itself is a mechanical filter; it does not contain treatment media. Both product types are manufactured in our ISO-certified facilities in Zhongshan, Guangdong, China.
| Item | Detail |
|---|---|
| Product name | Coffee machine filter basket (stainless steel) |
| Material | SUS304 food-grade stainless steel (SUS316L available for some models) |
| Compliance | Food-contact materials meet EU LFGB, US FDA, and NSF standards; company holds ISO 9001, ISO 14001, ISO 45001, and IATF 16949 |
| Hole precision | ±0.01 mm, achieved by laser etching and electrochemical forming |
| Capacity options | Single shot, double shot, bottomless, and custom capacities |
| Customisation | Diameter, depth, hole pattern, handle structure, logo laser engraving, and packaging |
| Quality control | IQC, IPQC, OQC; flow consistency, hole distribution, and mechanical strength tested in CNAS-accredited laboratory |
| MOQ | Standard models: 1,000–2,000 pcs; OEM custom: typically 5,000 pcs or more |
| Lead time | Samples: 7–10 days; bulk orders: 25–35 days |
| Origin | Zhongshan, Guangdong, China |
Thesvin operates a 50,000 m² manufacturing facility in Zhongshan, Guangdong, China, including six cleanrooms totaling 20,000 m². Our quality management system is certified to ISO 9001, ISO 14001, and ISO 45001, and we achieved IATF 16949 certification in 2024. We also maintain a CNAS-accredited laboratory for filter performance testing, and our products comply with REACH and RoHS regulations.
Every filter basket passes through IQC, IPQC, and OQC stages, with dimensional checks and performance tests at each step. We can supply inspection reports with shipments, and we support OEM/ODM projects with custom sizes, structures, and packaging. With over 20 years of experience in filtration and more than 1,000 filtration solutions developed, we serve customers in Europe, the US, Japan, and Korea. Our automated production lines support monthly output of millions of pieces.
To receive a quote, please provide the following: your device or vehicle model (if applicable), size or drawing (or an original part), required airflow or water flow, operating conditions (temperature, pressure, media), and estimated quantity. Our engineering team will review and respond with a proposal. Contact us to get started.
Fitment depends on the portafilter or brew group dimensions. Thesvin manufactures baskets to match your drawing or original part, with custom outer diameter, rim profile, and depth. Send us your machine model or a sample, and we will confirm compatibility before production.
Yes. You can send an original basket or a 3D model, and our engineers will measure and replicate the critical dimensions. We will provide a sample for your approval before bulk production.
The basket retains coffee grounds while allowing brewed coffee to pass through. Hole diameter and distribution are controlled to ±0.01 mm, and each batch is tested for flow consistency and hole distribution in our CNAS-accredited laboratory. Efficiency depends on the hole pattern specified for your extraction requirements.
Yes. We offer OEM/ODM customisation of diameter, depth, capacity (single, double, bottomless), hole pattern, handle structure, and logo laser engraving. Packaging can also be customised. Custom projects typically require a minimum order quantity of 5,000 pieces and new tooling, with about 40 days for tooling.
We provide free samples of standard specifications (you cover freight); custom samples require a tooling fee, which is credited against bulk orders. Quotes are based on your specifications and quantity. Standard MOQ is 1,000–2,000 pieces; custom MOQ is typically 5,000 pieces.
Sample lead time is 7–10 days. Bulk orders usually ship in 25–35 days after sample approval. For large or long-term orders, we can arrange scheduled deliveries to support your production planning.
The stainless steel basket is durable and does not have a fixed replacement interval; it should be replaced if it becomes damaged, deformed, or if flow performance deteriorates. For water filter cartridges used alongside the basket, replacement frequency depends on water hardness and usage volume; please refer to the cartridge specifications.
Our facilities are certified to ISO 9001, ISO 14001, ISO 45001, and IATF 16949. We operate a CNAS-accredited laboratory and can provide test reports for flow, hole distribution, and mechanical strength. Food-contact materials meet LFGB, FDA, and NSF standards. For a quote or technical discussion, please <a href="/en/contact">contact us</a>.
