Mitarbeiter der KNOLL Maschinenbau GmbH montiert Schwerkraftbandfilter PF
Filteranlage Schwerkraftbandfilter PF - KNOLL Maschinenbau GmbH


KNOLL gravity belt filters PF and belt filters for cleaning cooling lubricants chip-removing working processes.

  • Use as stand-alone cleaning unit on machine tools or in combination with chip conveyors
  • Generally local use (for one machine tool)



Good price-performance ratio Short amortization time
Low maintenance and wear Low operating costs
Simple layout, easy access to all components Easy maintenance
Can be used universally for different working processes, materials, cooling lubricants, delivery rates and degrees of purity Simple design and planning


Filtration process

  1. Contaminated liquid flows through the inlet box into the filter trough
  2. The filter fleece holds back the contaminant particles during streaming
  3. The contaminant particles form a filter cake, which itself separates even the smallest dirt particles
  4. The filtered fluid collects in the filtered fluid tank

Regeneration process

  1. The growing filter cake increases the flow resistance
  2. The fluid level in the filter trough increases
  3. At a defined level, the belt drive switches on (alternatively: time-controlled)
  4. The carrier belt transports a piece of clean filter fleece to the filter surface
  5. The fluid level sinks again
  6. A sludge container takes up the dirty filter fleece



Filter systems

Gravity belt filter PF

Data sheet
Data sheet
pdf (1 MB)

Overview of our filter range: