Constant Temperature Air Cabinet with K18900 Cell

The Oil Separation Apparatus evaluates the oil separation tendency of lubricating greases during storage by simulating static conditions in a 35 lb pail.
In this method, a grease sample is placed on a 200-mesh stainless steel sieve inside a pressure bleeding test cell and subjected to 0.25 psi (1.72 kPa) air pressure at a constant temperature for 24 hours. The oil that bleeds through the grease is collected and weighed to determine the separation percentage.

The complete apparatus includes:

1. Pressure Bleeding Test Cell:
   Type A cell with a cup assembly, funnel, and beaker seat, featuring a bayonet-type closure and O-ring seal for airtight operation. The cup, funnel, and base are made of chrome-plated spun copper, and the sieve assembly consists of a 200-mesh stainless steel screen supported by a brass ring.

2. Constant Temperature Air Cabinet:
   An insulated, stainless-steel, airtight chamber designed to maintain constant temperature (77°F / 25°C) while providing regulated air pressure for up to four test cells simultaneously.
   The cabinet includes an electric heater, solid-state temperature controller, cooling coil, and circulation fan for uniform temperature distribution.
   The built-in air pressure system features an inlet pressure regulator, manostat, pressure gauges, manifold with control valves, and a gas washing bottle for clean, dry air supply.
   A pressure relief valve ensures operational safety against overpressure surges.

This dual-component design delivers precise, reproducible results for assessing the stability and consistency of lubricating greases during long-term storage.