D0 Carriage Roller Bearing Measurements

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Description

All of the ordered Tychoway rollers, to be used under the cryostat carriages on the center beam, have to be modified to accommodate a keyed way used to guide the cryostat along these same ways. A 0.320 x 0.406 inch notch is machined along one of the longer lower edges in order to create a 0.640 x 0.406 inch keyway when two of these notched rollers are bolted together (side by side) for installation. This keyway will fit over a .635 x .375 inch key, which is inserted into the ways. Due to the close fit, the rollers were sent ... continued below

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3 pages

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Jaques, Al February 6, 1989.

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Description

All of the ordered Tychoway rollers, to be used under the cryostat carriages on the center beam, have to be modified to accommodate a keyed way used to guide the cryostat along these same ways. A 0.320 x 0.406 inch notch is machined along one of the longer lower edges in order to create a 0.640 x 0.406 inch keyway when two of these notched rollers are bolted together (side by side) for installation. This keyway will fit over a .635 x .375 inch key, which is inserted into the ways. Due to the close fit, the rollers were sent to the Fermi Inspection Dept. to double check the machined notch dimensions and tolerances. Included is the drawing sent to the Tychoway manufacturer, who machined the notch, and the results of the measurements taken by the Inspection Dept. The tolerance on the 0.320 inch dimension is {+-} 0.002 inches. Only three of the initial ten rollers fall within the tolerance; No.3, 9 and 10 (they were numbered by the Inspection Dept.). The other seven, plus one of the 'good' rollers, can be matched up to meet the required dimensions of a 0.640 {+-} 0.004 inch keyway. Since only four rollers will be used on the keyed way per cryostat, the worst matches can be installed on the non-keyed side of the cryostat. A table listing the best possible matches and their subsequent dimensions and tolerances is given.

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3 pages

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  • Report No.: FERMILAB-D0-EN-206
  • Grant Number: AC02-07CH11359
  • DOI: 10.2172/1031146 | External Link
  • Office of Scientific & Technical Information Report Number: 1031146
  • Archival Resource Key: ark:/67531/metadc843419

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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Creation Date

  • February 6, 1989

Added to The UNT Digital Library

  • May 19, 2016, 3:16 p.m.

Description Last Updated

  • Aug. 30, 2016, 4:02 p.m.

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Jaques, Al. D0 Carriage Roller Bearing Measurements, report, February 6, 1989; Batavia, Illinois. (digital.library.unt.edu/ark:/67531/metadc843419/: accessed December 17, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.