Machinery trading company: Liquid level gauges, oil skimmers, backwashing ceramic filters





kosell コセール
The highly accurate, backwashing filter without waste emission from the filter replacements
Kosell has achieved both “highly accurate filtration capacity” and “maintenance-free operation” that often conflicts with each other. Kosell saves the filter replacement labor, contributing to reduction of the running costs.

Key Features of Kosell

  1. Backwashing type
    Kosell significantly reduces the filter element replacement cycles. With almost once-per-year filter maintenance, it is extremely economical.
  2. With filter medium
    Unlike cyclone filters, Kosell’s filtration accuracy will not compromise during warm-up and shutdown runs. Kosell assures stable and secure filtration.
  3. No waste emission
    Unlike bag filters that require replacements, Kosell makes disposal of the elements unnecessary. Accordingly, it works an effective measure against the environmental issues, including ISO14001.
Ceramic Filter
  • Filtration accuracy: 20μm
  • Renewable (good for recycling)
SUS Mesh Filter
  • Filtration accuracy: 25μm
  • Triple-layer sintered metal mesh

Key benefits from Kosell

Reduced running costs through zero industrial waste emission, requiring no consumables


  • Prevents wear on rotary joints.
  • Protects high-pressure pumps.
  • Prevents clogging in the oil holes.
  • Reduces chucking failures.
  • Improves product accuracy
  • Prevents deterioration of the process fluids
  • Extends the life of tools and grindstones.
  • Eliminates machine shutdowns for maintenance.

Drawings and brochures download

Koike Backwashing Filter
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Machining Centers
Kosell is effective for high-pressure coolants in machining centers, including the through-spindle coolant. Particulary for ones using oil-based coolant fluids, Kosell is extremely effective because no other maintenance-free filters are commercially available so far. In iron casting, Kosell also effectively works as the filtration unit for carbon sludge that cannot be completely absorbed by magnetic separators.
Kosell reduces dressing times, which will extend the life of grindstones. Kosell is also effective for oil-based coolants as with machining centers.
Kosell extends the replacement cycles of the cleansing fluids, which also allows reduced effluent. It also extends the life of such replacement-type filters as the pre-filters for oily water separators.
For coolant fluids
secondary treatment
  Filtration accuracy Maximum service flow capacity Supplied pressure Bore
KC1-250-20RV 20μm 40L/min ~0.25Mpa 25A
KC1-500-20RV 20μm 60L/min ~0.25Mpa 25A
KC4-250-20RV-1 20μm 140L/min ~0.3Mpa 40A
KC6-250-20RV-1 20μm 210L/min ~0.3Mpa 50A
  KC1-250-20RV KC1-500-20RV KC4-250-20RV-1 KC6-250-20RV-1
Filtration accuracy 20μm 20μm 20μm 20μm
Maximum service flow capacity 40L/min 60L/min 140L/min 210L/min
Supplied pressure ~0.25Mpa ~0.25Mpa ~0.3Mpa ~0.3Mpa
Bore 25A 25A 40A 50A
Product code convention
Product code convention






Precautions for Use
  • The foregoing maximum service flow capacity is for hydrosoluble coolant. Though Kosell can be used for oil-based coolants, the service flow volume will be around 70 percent of the maximum capacity.
  • For secure backwashing, selection of the coolants requires particular care. Be sure to use a pump with total head lift of 20m to 25m in closed operation (KCI series).
  • The backwashing air pressure is required to be 0.35MPa or greater. In addition, directly draw the factory air to securely obtain sufficient air volume. Using clean, filtered backwashing air is recommended.
  • Run 5 to 8 seconds of backwashing every 60 seconds. The backwash flow is considerably strong from the drain line. Make sure that the tank is scatter-controlled.
  • This filter is for secondary treatment. DO NOT skip first treatment. To the filter, be sure to supply the fluids that are filtered through magnet separators for magnetic materials, or drum/cyclone filters for non-magnetic materials.
  • If the coolant is hydrosoluble (emulsified, in particular), the filter element will be adversely affected by the oil content in the fluid. Install such equipment as oil skimmers to collect the floating oil as much as possible.