Hydrodynamic Bearings

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Published 2016-12-06
Correction: Hard drive spindles typically use ball bearings. It is the read-write heads which ride on a cushion of air (ie they are aerodynamic bearings). Also, the spin stands used to inspect hard drive discs use air bearings.

Brought to you by the Machine Tech Video Blog!

In this video, Adam introduces hydrodynamic bearings. He covers:

+ The pros and cons of hydrodynamic bearings
+ The construction of a hydrodynamic bearing
+ A step-by-step explanation of the operation of a hydrodynamic bearing
+ A break-down of fluid viscosity
+ Some variations on the hydrodynamic bearing: hydrostatic lift, tilting pad journal and thrust bearings, gases as lubricants

Title music by Andrew Applepie - "Festivities":
andrewapplepie.com/

Special thanks to Laney College in Oakland, CA.

For more about Laney College, check out the website: laney.edu/machine_technology/

AND BE SURE TO SMASH THAT "LIKE" BUTTON!

All Comments (21)
  • I cannot believe this isn't a more popular channel. Very well done! Thanks :)
  • @PacoOtis
    Dude! We definitely owe you a beer! I'm a retired instructor and feel quite good about seeing someone like you who does such an excellent job. You are well spoken and know your material and have very pertinent and well done graphics. Keep it up!
  • @adriansaidan1736
    i am a student engineer that works at a bearing manufacturing facility. This is an excellent presentation of the information and you did a great job at breaking everything down in an accurate and concise manner.
  • Clean, Clear, Concise! These videos provide a thoroughly understandable primer on a variety of subjects, and they're presented in a relatively fun format without talking down to the idiots, or being too dumbed-down for those of us with some knowledge in whichever field is being covered. Altogether, I give this series of videos an A+, or 5 outta 5★ Thank you for making these vids!
  • I can't believe that I haven't stumbled upon this channel until now! This is wonderful, thank you!
  • Learned this in machine shop junior high school 1978 but its still a good refresher.American education is pretty good if you listen to what the teacher says.
  • I like your real life example of a typical motorist surprised by puddles after the rain. So feel safer knowing that one or two out of ten motorists are actually competent enough to drive. After wrenching 50 years on everything with a motor wheels, wings or a hull, I didn't learn much from this, but it was clear and precise. Kudos to you good sir. Here's a tidbit you may not know from motor bearings: Motors with nonconductive bearings last much longer and restore full current to the windings instead of shunting through the journal to ground. RC Hobbyists discovered this after installing ceramic hybrid bearings in their hot 3 phase motors, yielding 12 - 15% increase in run time on batteries, and much longer life on the bearings. Keep up the great work!
  • My friend, i work in a power plant, this video has help me a lot to understand what it's happening when i'm checking clearence in the fans , blowers and also in the turbine journal bearing, you are the best my friend. I really hope to see new videos, thanks from Honduras.
  • @pstrap1311
    Great video. I'm a fabricator/mechanic in the marine industry and have years of experience installing and servicing bearings of this type in boats drive trains. I really appreciated learning some of the theory behind something I am so familiar with the practical applications of. Thanks!
  • @indrajith84
    Thanks for the video. You have explained the concepts so clearly with proper pictures and animation. 👍
  • @freedtmg16
    Oh man. I found your videos on air bearings and here I am like 4 hours later. You do an AMAZING JOB breaking stuff down. 👏
  • @omarmafia234
    You are just super! It's really rare to find such good quality explanation for mechanical concepts. THANK YOU!!
  • @konobikundude
    Thank you for the closed captions! The production value is amazing and accessible. Definitely sharing the channel with friends.
  • @reggraham9180
    Your videos are so refreshing compared to the average youtube crap!
  • This is the best hydrodynamic bearing video tutorial I've ever watched on youtube. Thanks for a good job
  • @JazzLowrider
    Adam you're the best teacher on YouTube, thank you for a clear informative explanation, a good teacher makes a huge deference.
  • @AffandiAiman
    Because of you, I finally understood what my lecturer is trying to differentiate between Hydrostatic and Hydrodynamic bearings. Thank you and may god bless you with all the happiness in the world :')
  • @telmorafeiro299
    A couple of mechanical engineering classes learning about this hydrodynamic bearings and its physics, and ending not picturing this. Just saw this video and everything becomes clear in my mind now. Thank you very much! Nice speach, tone, animations, explanations! Very nice work!
  • @rupert5390
    this channel is fantastic GUYS KEEP IT UP PLEASE.