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References: Bearing Details, Lubrication and Pedestals

  1. Rolling-element bearing - Wikipedia - Covers bearing types, fatigue failure and rated life, including the L10 basic life and the rule of thumb that median life is about five times L10, matching the chapter's L-50 conversion.

  2. Pillow block bearing - Wikipedia - Describes pillow block housings mounted parallel to the shaft, with solid and split styles and their mounting. Background for the chapter's solid, split and totally split housing comparison.

  3. Grease fitting - Wikipedia - Explains the Zerk fitting's check-ball design that admits grease from a gun while keeping dirt out, the standard lubrication port on fan pillow blocks described in this chapter.

  4. Rolling Bearing Analysis (5th ed.) - Tedric A. Harris and Michael N. Kotzalas - CRC Press - Harris is credited with the standard engineering exposition of Lundberg-Palmgren fatigue theory and Weibull life dispersion, the statistics that make L-10 and L-50 two points on one failure curve.

  5. Machinery's Handbook (31st ed.) - Erik Oberg, Franklin D. Jones, Holbrook L. Horton and Henry H. Ryffel - Industrial Press - Its compact reference tables for keys and keyseats, bearing mounting and lubrication are the shop-floor standard for the keystock, adapter mounts and fits discussed here.

  6. FanPedia: The Fan & Blower Encyclopedia (PDF) - Twin City Fan - Primary source for bearing life tables, pillow block styles and mounts, fixed and floating rules, oil lubrication, bearing seals, gas purge seals, restraints and pedestals.

  7. FanPedia online - Twin City Fan - Web edition of FanPedia with the Fan Components bearing and pedestal image galleries, handy for recognizing the housings, mounts and pedestal features described in this chapter.

  8. Fan Bearing Selection (FE-1200) - Twin City Fan Engineering Letter - Gives the L-50 equals five times L-10 rule, typical L-10 lives, bearing seal types and speed limits, and Twin City Fan's fixed and expansion bearing practice.

  9. Fan Bearing Maintenance and Troubleshooting (FE-1300) - Twin City Fan Engineering Letter - Practical guidance on grease grades, high temperature greases, relubrication intervals and bearing troubleshooting, extending the chapter's grease fitting and lubrication sections.

  10. Product Catalogs - Twin City Fan - Current product catalogs, the authority the chapter defers to for which L-10 bearing life ratings and bearing options each fan model offers.