The systems work with great success on applications that require an extremely high surface finish, yet create small amounts of stock removal (i.e. honing and super finishing) as well as EDM applications.
Systems are available with flow rates ranging from 5 GPM to 1,200 GPM and are available in manual, semi-automatic, and fully automatic versions. All automatic systems come with drying stations.
Using the principle of depth filtration, the filter plates inside the vessel are “precoated” with a filter aid such as cellulose or diatomaceous earth. The filter cake grows and compresses steadily during the filtering cycle, dropping throughput capacity and increasing the pressure in the vessel. When a maximum differential pressure is reached or a preset filtration time ends, the filter plates are cleaned and filter cake is dried.
By utilizing horizontal filter plates, the process can be interrupted at any time without disturbing the filter cake. Manual systems are available with 27 or 43 square feet filter areas, and can be customized with magnetic separators and coolers to meet your exact needs. Look below for our precoat filters gallery.
Precoat Filters are designed for extremely fine filtration.
Advantages
- Suitable for oil and water-based coolants
- Available in manual and fully automatic, self-cleaning models
- Continuous supply of coolant to the machine(s) without downtime
- Finest filtration available
- Ideal for applications that require an extremely high surface finish or generate small particulates
- All filters are customizable
- All filters are durable and easy to use
Industry Applications
- Turbine blade grinding
- Turbine vane grinding
- Gear grinding
- Creep feed grinding
- Profile grinding
- CBN grinding
- Block honing
- Crankshaft grinding
- I/D & O/D grinding
Double disc grinding
Options, Accessories & Customizations
Every Hoffmann filter is customizable to your specific needs. We have many accessories and upgrades to choose from.
Micron Rating
A filtration micron rating tells you the size of the smallest particles a filter can trap, measured in microns. Lower micron ratings mean finer filtration. The micron filtration range of the machine can be adjusted with accessories and upgrades. .
WORK WITH US
You will find our conveyor, filtration, and cooling systems virtually everywhere, worldwide.
(248) 486-8430
We believe our customers deserve the best service we can offer, both while we’re designing your product, and long after it’s running on your floor. We serve the aerospace, automotive, medical, tool, and wind industries, along with many others.
- Brazil - Sao Paulo
- China - Yantai
- Germany - Lengede
- India - Mumbai
- Italy - Torino
- Israel - Raanana
- Japan - Ibaraki-Pre
- South Korea - Changwon
- Turkey - Izmir
- USA - Michigan