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Adjusting End Play on Vertical Pump Motors

  • January 2024
  • Number of views: 1723
  • Article rating: No rating
Recording duration: 7:30

This video walks through the steps to adjust and set end play on a typical vertical hollow shaft pump motor. Proper end play adjustment is important to keep the lower bearing from supporting the weight of the rotor and to allow for thermal growth within the motor.

The motor in this video has a thrust bearing in the top and a standard ball-type guide bearing in the bottom, which is typical of vertical pump motors. There are other bearing arrangements with somewhat different procedures for setting end play, but here we’ll be working with the most common arrangement and procedure. There are variations of this process, and some vertical pump motor bearing arrangements require special procedures, especially those with springs mounted under a spherical roller thrust bearing.

Topics covered include:

  • Tools and supplies needed
  • Basic principle of end play adjustment
  • How to adjust end play
  • How to measure and verify proper end play


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