Introduction
Automatic milk filtration without filter socks
Automate one of the last repetitive manual tasks in the milking process. The Automatic milk filter for Lely Astronaut automatically filters milk, cleans itself when needed and eliminates the need for disposable filter socks.
Smart and consistent automatic milk filtering
Save time on repetitive tasks
Changing milk filter socks requires regular attention. The Automatic milk filter automates milk filtration and reduces routine handling.
Smart and consistent filtration
The system continuously monitors filtration performance and automatically initiates cleaning when required.Easy operation without consumables
The self-cleaning membrane eliminates the need for disposable filtration socks and minimises manual intervention.
Your challenges
The challenges you face

Changing milk filter socks is a recurring task that requires attention every day. Although small, it takes time away from observing cows, managing the herd and handling other priorities. It can also interrupt workflows in an increasingly automated milking process.
How the Automatic milk filter helps
The Automatic milk filter automatically filters milk and cleans itself when needed, eliminating disposable filtration socks. In combination with the Astronaut A5 (Next), it reduces the manual attention required as part of the daily milking routine.
What this means for your farm
- No filter sock replacements
- Less time spent on routine handling
- A more streamlined workflow
- More time for tasks that require your attention and expertise

Traditional milk filtration systems rely on disposable filter socks that need to be purchased, stored, replaced and discarded. Over time, this creates additional handling and ongoing consumable use on the farm.
How the Automatic milk filter helps
The Automatic milk filter uses a reusable stainless-steel membrane instead of disposable filter socks, reducing dependency on consumable filtration materials.
What this means for your farm
- No filter sock inventory
- No filter sock disposal
- Reduced use of filtration consumables

Manual processes depend on routines being carried out consistently and at the right time. As daily workloads increase, maintaining consistency across every task can become more challenging.
How the Automatic milk filter helps
The system continuously monitors filtration performance and automatically initiates flushing and cleaning when required. It is synchronised with the Astronaut cleaning process and designed to operate with minimal intervention.
What this means for your farm
- Automated monitoring of filtration performance
- Automatic cleaning and flushing
- A consistent and integrated filtration process



FAQ
Questions asked about the Automatic milk filter
The Automatic milk filter is an optional Astronaut feature that automatically filters milk using a stainless-steel membrane and eliminates manual filter sock changes.
No. The system uses a stainless-steel membrane and does not require disposable filter socks.
The system detects the blockage and automatically starts a back flush cycle before resuming filtration.
Yes. The Automatic milk filter is integrated into the Astronaut cleaning process and is automatically cleaned during every main cleaning cycle.
Yes. One system can be connected to up to four Astronaut milking robots.
The Automatic milk filter is available for the Lely Astronaut A5 Next and for Astronaut A5 systems equipped with the AOS-2 upgrade. If you are unsure whether your Astronaut is compatible, please contact your local Lely Center.
Ready to simplify milking?
Could the Automatic milk filter fit your farm?
Every dairy farm is different. Discover how the Automatic milk filter can help reduce routine work, simplify milk filtration and fit within your milking setup.
