Information sharing: Week 22, 2010 (HARDNESS, THREADS, BEARINGS)

somashekar

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Week 22. June 2010:
HARDNESS, THREADS, BEARINGS ...
I get articles regularly on various commonly found processes and components in a typical manufacturing set-up. Though most of us know them or believe we know them, these do help to enhance and sharpen knowledge on almost every aspect of a manufacturing set-up. I intend to share them here regularly so that it is of some use to anyone concerned to manufacturing, maintenance and service fraternity. :agree:

This is the 11th of the series ......
 

Attachments

  • Hardness_Basics week22, 2010.pdf
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  • THREADS-PART_ONE week22, 2010.pdf
    773.9 KB · Views: 226
  • THREADS-PART_TWO week22, 2010.pdf
    691.9 KB · Views: 223
  • Bearings_week22, 2010.pdf
    662.8 KB · Views: 220
  • Bearing_Failures week22, 2010.pdf
    1.2 MB · Views: 220
Good info :agree1: Thank's.

One comment about contamination in ball bearings: Their life span is often decided during the first few minutes of use.

The classic example would be metallic particles in a brand new engine or gearbox. Those particles will immediately affect all bearings in sight, bringing their lifespan down. Have you ever tried filtering the the oil of a brand new car after the first spin around the block? The result is likely to be a shock.

/Claes
 
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