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Precoat Filter ASF

Precoat Filter ASF

HOFFMANN Precoat Filter ASF
are especially suited where other filter systems have reached their performance limits, such as in the machining of cast iron, hard metal or HSS.

Filter fineness from up to 3 µm
It is especially used for ultra-fine and clear filtration of oils, synthetic solutions, process water and other fluids where a clear filtrate down to nominally filter fineness 3 µm is always required.

Automation according to your requirements 
In addition to their use in metal processing, the special fields of application also render HOFFMANN Precoat Filters ideal in the beverage and environmental industries, as single or central systems.

Generously dimensioned tanks
HOFFMANN precoat filters are equipped with generous tanks for the continuous care of the machine tool.

Reliable cooling in continuous operation
An integrated cooler in the clean tank brings the cooling lubricant to the required temperature for the machine tool.  Additionally, separate cooling circuits are available for, for example, a spindle or motor cooler.


Precoat Filter ASF


Vessel model
Filtration capacity*
A 0
10 to 40 l/min
A 1
40 to 80 l/min
A 2
80 to 120 l/min
40 to 200 l/min
200 to 900 l/min
900 to 2.000 l/min

Due to the compact and space-saving modular design, filtration capacities in excess of 10.000 l/min are achievable.

*Based on machining oils with a viscosity of 20 mm2/s at 40°C, depending on application

  • Areas of application
    • Turning machines
    • Grinding machines
    • Honing machines
    • Finishing machines
    • Lapping and polishing machines
    • Gearbox test benches
  • Advantages
    • Ultra-fine and clear filtration
    • Steel-mesh filter plates for enduring use
    • Robust and reliable design and operation
    • Fully automatic operation
    • High filtration capacity for the supply of complete production lines
    • Continuous supply of your machine(s) without downtime
  • Options
    • HOFFMANN Cooling Systems
    • Magnetic separator
    • Filter aid dosing unit
    • Bag and big-bag discharge system
    • Mobile and tiltable sludge cart
    • Supply stations

Precoat Filter ASF - 3D Animation

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