| Popis: |
The disk-scraper mechanism is commonly used in self-contained journal bearings as a lubricator. Two types cf fixed clearance scrapers and a floating plow-type scraper were investigated experimentally. The effects of speed, viscosity, clearances and immersion on flow were found by systematic variation. For each type, the flow was found to increase, with speed, N, to a critical value, Nc, and then decrease, in some cases to zero at N ≃ 2.5 Nc. The dominant parameter affecting both critical speed and flow below critical speed was found to be the immersion. Viscosity and system clearances had comparatively mild effects. Of the scrapers tested, the floating-plow type was found to be superior in several respects. Presented at the 34th Annual Meeting in St. Louis, Missouri, April 30-May 3, 1979 |
