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Eaton's stationary off-line filter units are designed for the oil-service for gears with lubricants of high viscosity for the off-line filtration. The compact construction on a base plate without tube is the precondition for the small dimensions and the high reliability.  The device is equipped with a gear pump driven by an e-motor. The circulation filter units US 10-640 take oil from a reservoir connected by a hose to clean it from contaminants (dirt and water). The purified oil is pumped into the intended reservoir. The contaminants accumulate in the filter. The unit works without supervision after the start. The maximum allowable dirt particle size of the working fluid should be < 200μm. Larger dirt particles cause a premature wear of the gear pump.

The stationary off-line filter units in the US series are used for the fine  filtration, filling or flushing of hydraulic systems. The filter units are equipped with a gear pump driven by an electric motor. They are available for various volume flow rates, in different sizes, and with different micron ratings for the required fluid cleanliness.

Stationary off-line filter unit
Compact with gear pump and heat exchanger
Removal of
Particles and water


  • Reliable and simple off-line filtration
  • Reinforces existing operating in-line filter
  • Improves cleanliness classes
  • Longer service life of system components and operating fluids
  • Compact design saves space and adapts to your operation
  • High-quality filter elements with high dirt holding capacity
  • Filter elements can be replaced without any tools
  • Safety valves permit unattended operation
  • Uninterrupted filtration during tank filling
  • Optional use of water-absorbing filter elements
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