• Oxidation Stability Test Apparatus for Lubricating Greases

Oxidation Stability Test Apparatus for Lubricating Greases

The sample is oxidized in a bomb initially charged with oxygen at 110psi (758kPa) and maintained at elevated temperature for a specified aging period. The pressure drop inside the bomb is measured by means of a gauge or transducer.

Oxidation Bomb

Stainless steel bomb consists of body, lid with stem and needle valve, and dish holder per ASTM specifications. Bomb interior surfaces and inside of stem have a high polish to facilitate cleaning. Safely withstands a working pressure of 180psi (1241kPa) at 99°C (210°F). Includes PTFE gasket seals (3) and cap screws with wrench. PTFE fluorocarbon seals are available (see Accessories).

Pressure Measurement & Recording Equipment

Select mechanical pressure gauges or, for greater convenience and accuracy in test reporting, the Oxidata® Pressure Management System designed expressly for ASTM oxidation tests. Pressure gauge measures pressure inside Oxidation Bomb with accuracy of better than 0.5psi (3.45kPa) in accordance with ASTM specifications. Range: 0-160psi (0-1100kPa), graduated in 1psi intervals. Cleaned for oxygen service.

Oxidation Bath

Constant temperature oil bath holds bombs at the proper depth for determining oxidation stability of lubricating greases Fully digital touch screen controller provides quick temperature stabilization without overshoot, and the bath is protected by a redundant overtemperature control circuit that interrupts power should bath temperature exceed a programmed cut-off point. Display provides actual setpoint temperature values in °C/°F format. Contact your Koehler representative for information. Heavily insulated welded stainless steel bath interior has a bomb support rack and overflow standpipe/drain to maintain proper working depth. Steel exterior has a corrosion resistant polyurethane enamel finish

Conforms to the Specifications of:

ASTM D942; IP 142; DIN 51808; FTM 791-3453


  • 4 Oxidation Bombs


  • Range: Ambient to 221°F (105°C)
  • Control Stability: ±0.09°F (±0.05°C)

Bath Medium:

  • 7.2 gal (27.2 L) water or white technical oil
  • K64500: 115V 60Hz, 10A
  • K64590: 220-240V 50/60Hz, 5A
  • K11000 Oxidation Pressure Bomb
  • 311-160-003 Pressure Gauge
  • K11040 Borosilicate Glass Dish
  • K10504-0-1 Transducer Assembly
  • K10551 Pressure Line
      For pressurizing Oxidation Pressure Vessel. 6 ft. (1.83m) long, with quick release coupling for needle valve on pressure vessel and threaded fitting for oxygen tank
  • K10556 Oxygen Manifold Pressure Relief System
      Connects to oxygen source to prevent overcharging of vessel. Equipped with relief valve to vent at 125psi and 300 series stainless steel 150psi burst disk assembly. Constructed from 300 series stainless steel. Cleaned for oxygen service
  • K11029 PTFE-fluorocarbon Gasket
  • 355-001-001 White Technical Oil - 1 gal container
  • 355-001-003 White Technical Oil - 5 gal container
  • 250-000-22F ASTM 22F Thermometer - Range: 204 to 218°F
  • 250-000-22C ASTM 22C Thermometer - Range: 95 to 103°C