Gearbox Filtration Systems

Gearbox Filtration Systems

USPI Gearbox Stationary Inline Filtration systems (Model: 88 series) are designed for use on: all types of gearboxes. (88S pictured to the left)

The 88 series filtration systems can be configured for any gearbox application. Gearboxes are notoriously dirty and sometimes wet, constantly forming contaminants. An 88 series filtration system, equipped with its own pump and motor, employs a simple approach to filtering that removes both solid contaminants and the water contamination. Install an 88 series filtration system to keep your gearbox oil clean and your machinery running.


  • Sturdy Metal Frame
  • Chrome Plated Steel Filter Housing(s)
  • Stainless Steel Piping
  • Oil Sample Port
  • 60 Mesh SS Y-Strainer
  • Flow Meter (sized to unit): 1-20 GPM
  • Pressure Gauges
  • Pump (sized by application):
    0.5 – 12 GPM
  • Motors (sized by application):
    0.3 – 1.5 HP

Filter Elements sold separately


  • Can be added in any combination to any model
    -H: includes heater
    -X: explosion-proof
    -W: non-caustic washdown


USPI 88 Gearbox

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  • Easy installation and operation
  • Installation requires only a power source, two isolation ball valves, four compression fittings and some tubing
  • Sample probe makes taking oil samples quick and easy
  • Convects heat away from the gearbox
  • Multi-pass depth filtration reduces particulate and water contamination
  • Filtration down to five microns (dependent upon USPI filter element chosen)
  • Can restore or bring oil to cleaner-than-new levels
  • Filter elements each hold about 12 pounds of solid and 5 quarts of water contaminants
  • Doubles oil life of mineral-based fluids
  • Typically quadruples synthetic gear oils life
  • Typically quadruples gearbox life



1-60 gal1 filter

61-120 gal2 filters

90-180 gal3 filters

120-240 gal4 filters

180-480 gal5-8 filters