Accession Number : AD0258180

Title :   HIGH TEMPERATURE INSTRUMENT OIL

Corporate Author : GENERAL ELECTRIC CO SCHENECTADY N Y

Personal Author(s) : SCHWARTZ,ALBERT A. ; BROADLEY,HARRY R. JR. ; NORMAN,ROBERT S.

Report Date : DEC 1960

Pagination or Media Count : 1

Abstract : Studies were made on lubricity improvers and oxidation inhibitors for silicone fluids. Full scale performance tests in instrument bearings were run both in air and in an argon atmosphere. Evaluation of the base stock, the most promising fluid formulation, and the vendor-developed dry lubricated ball bearing was carried out in a simulated gyro gimbal assembly and in high speed gyro motors designed to operate at 400 F. Significant improvement over the silicone base oil was obtained with the oil compounded with a lubricity improver, especially in the slow speed gimbal tests. Lubrication of the high speed gyro motors with these lubricants was not as satisfactory as the slower speed application. The dry lubricated bearings appear promising for moderate to high speed applications, such as the tachometer generator, where torque requirements are not critical. These bearings did not prove to be satisfactory in the gyro gimbal test since bearing torque increased rapidly during the first 200 hr of operation. (Author)

Descriptors :   *LUBRICANTS, *OILS, ANTIOXIDANTS, BALL BEARINGS, BEARINGS, CHEMICAL PROPERTIES, EXOSPHERE, FRICTION, GIMBALS, GREASES, HIGH TEMPERATURE, INSTRUMENT GREASES, LUBRICANT ADDITIVES, MAGNETIC MINES, OXIDATION, PHYSICAL PROPERTIES, SILICONES

Distribution Statement : APPROVED FOR PUBLIC RELEASE