ANALYTICAL AND EXPERIMENTAL STUDY OF ADAPTING BEARINGS FOR USE IN AN ULTRA- HIGH VACUUM ENVIRONMENT. PHASE I. SCREENING OF WEAR AND FRICTION CHARACTERISTICS OF PLASTICS, DRY POWDERS, COMPOSITES, AND ALLOYS. PHASE II. OUTGASSING DETERMINATION OF PLASTICS, DRY POWDERS, AND COMPOSITES. PHASE III. EVALUATION OF DRY POWDER LUBRICANTS AND SELF-LUBRICATING MATERIALS IN ULTRA-HIGH VACUUM
Results of an investigation are presented on the dry powder lubrication of gears, bearings, and retainers for use in vacuum environments. The wear and friction characteristics of various dry powders and dry self-lubricating materials for use in ball bearings were evaluated and screened in a dry inert atmosphere in laboratory test apparatus under rotating speeds and loads similar to that found in 2 to 7 h.p. electric motors. The materials evaluated included reinforced thermosetting plastics, dry lubricant filled and unfilled thermoplastics and dry lubricant filled sintered alloys. Dry powder and self- lubricating materials were subjected to the vacuum conditions in the range of 1 x 10/sup -6/ to 1 x 10/sup -9/ mm Hg, and at--60 to 1000 deg F to determine the rate of the outgassing and/or decomposition of each material. Dry ball bearing (204 size, 22 mm bore) soaking and operating tests were conducted using retainers fabricated from the most promising materials. The bearings were operated at a speed of l800 rpm, radial load of 75 lbs, axial load of 5 lbs, and tested under vacuum and temperature conditions previously described. Special bearings and retainer materials were used for exploratory tests up to 1500 deg F. (auth)
- Research Organization:
- Westinghouse Electric Corp. Materials Labs., East Pittsburgh, Penna.
- DOE Contract Number:
- AF49(600)-915
- NSA Number:
- NSA-16-010121
- OSTI ID:
- 4802967
- Report Number(s):
- AEDC-TDR-62-51
- Resource Relation:
- Other Information: Orig. Receipt Date: 31-DEC-62
- Country of Publication:
- United States
- Language:
- English
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