I'm thrilled to hear that you find the videos helpful! Your feedback encourages me to continue simplifying complex topics. If there's anything specific you'd like to see covered or if you have any questions, feel free to let me know. Thank you for watching and for your kind words!
Great question! In the video, it's explained that the shafts are elevated by hydrodynamic effects from gas foil bearings. As the shaft spins, these effects generate increased force. At lower speeds, there's less of this hydrodynamic effect, which can lead to wear on the gas foil bearings. To address this wear issue in certain applications, external compressed air is sometimes employed to lift the shaft.
Excellent question! Numerous efforts have been made to substitute oil lubricated bearings with gas foil bearings, particularly in applications such as HVAC compressors. However, it's crucial to understand that a direct replacement is not feasible. This is primarily due to the fact that gas bearings generally offer lower stiffness compared to oil bearings, as the working fluid is gas instead of oil. Consequently, in order to accommodate the same weight of the shaft and other forces that need to be counteracted, the gas bearing typically needs to be larger in both diameter and length.
Excellent question! While Part 17 video delves into clearance details, it may not cover the specific information you're seeking. If you could provide more details on your inquiry, I'll be happy to create a customized video offering an in-depth design guide tailored to your needs. :)
![[Jaeger] Air Bearing Spindle](/img/n.gif)
Your support means everything to us. If you find value in our videos, please consider sharing them with someone who would benefit. Thank you so much!
Thank you for the videos, clearly a topic that lacks simple explainations like you do.
I'm thrilled to hear that you find the videos helpful! Your feedback encourages me to continue simplifying complex topics. If there's anything specific you'd like to see covered or if you have any questions, feel free to let me know. Thank you for watching and for your kind words!
Excellent video.... What is the source of this compressed air for lifting the shaft? Is it internal (bleed air) or external?
Thanks.
Great question! In the video, it's explained that the shafts are elevated by hydrodynamic effects from gas foil bearings. As the shaft spins, these effects generate increased force. At lower speeds, there's less of this hydrodynamic effect, which can lead to wear on the gas foil bearings. To address this wear issue in certain applications, external compressed air is sometimes employed to lift the shaft.
@@RotorDynamics Thanks for the excellent explanation.... Keep us educating.... Thanks...
Thank you for sharing the knowledge on gas foil bearing. Can we replace oil lubricated bearings with foil bearing? Suggest few applications.
Excellent question! Numerous efforts have been made to substitute oil lubricated bearings with gas foil bearings, particularly in applications such as HVAC compressors. However, it's crucial to understand that a direct replacement is not feasible. This is primarily due to the fact that gas bearings generally offer lower stiffness compared to oil bearings, as the working fluid is gas instead of oil. Consequently, in order to accommodate the same weight of the shaft and other forces that need to be counteracted, the gas bearing typically needs to be larger in both diameter and length.
Do u have any videos or info onto how to dimension ur top foil and bump foil?
Excellent question! While Part 17 video delves into clearance details, it may not cover the specific information you're seeking. If you could provide more details on your inquiry, I'll be happy to create a customized video offering an in-depth design guide tailored to your needs. :)
Very unique information in TH-cam 👍
Thank you so much! I'm thrilled to hear that you found the information unique. Your support means a lot! 😊👍
Lewis Gary Jones Mark Thompson John
Looks like you mentioned a few names there-anything specific you'd like to discuss or ask about? 😊 Let me know how I can help!