DETERMINATION OF THE SHEAR STABILITY OF VARIOUS AIRCRAFT LUBRICATING GREASES BY THE HIGH TEMPERATURE SHELL ROLL TESTER. Period covered : October 1955 to November 1956

Technical Report · Mon Apr 01 04:00:00 EST 1957

OSTI ID:4216309

Kjerland, D T

The shear stability of various high temperature lubricating greases was determined at temperatures up to 600 deg F by use of a Shell Roll Tester which was adapted for high temperature testing. The greases evaluated were of both soap and non-soap types and contained the following types of base fluids: silicone, pentaerythritol ester, diester, substituted m-terphenyl and biphenyl, and petroleum oil. Bargraphs plotting time in the Shell Roll Tester at a given temperature and rotational speed versus the resultant grease consistency were prepared for each of the lubricating greases evaluated. Although the main emphasis in this work was on the determination of the shear stability of a given grease at various temperatures, some testing was done in an effort to determine what effect, if any, rotational speed had on the change in grease consistency in this test. The High Temperature Shell Roll Tester has been shown to be an effective method to determine the shear stability of a lubricating grease at high temperatures. (auth)

• Research Organization: Wright Air Development Center. Materials Lab., Wright-Patterson AFB, Ohio
• NSA Number: NSA-13-021967
• OSTI ID: 4216309
• Report Number(s): WADC-TR-57-113; AD-118246
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

CHEMISTRY
HIGH TEMPERATURE
LABORATORY EQUIPMENT
LUBRICATION
STABILITY
TENSILE PROPERTIES