HOME  |  NEWS  |  BLOGS  |  MESSAGES  |  FEATURES  |  VIDEOS  |  WEBINARS  |  INDUSTRIES  |  FOCUS ON FUNDAMENTALS
  |  REGISTER  |  LOGIN  |  HELP
Page 1/2  >  >>
Harini
User Rank
Iron
Amazing uses of bearings
Harini   1/13/2015 2:05:27 AM
NO RATINGS
Most of the industrial applications are really had amazing about thinking about bearing weight. It is all are based on the bearings used in those applications.

Douglas Smock
User Rank
Platinum
Re: We tried that before...
Douglas Smock   9/7/2011 11:15:46 AM
NO RATINGS
Mea culpa. The sentence should read:

Bearings made from PEEK compounds can take thermal
conditions up to 482F (250C).

Ralphy Boy
User Rank
Platinum
Re: We tried that before...
Ralphy Boy   8/22/2011 11:53:10 PM
NO RATINGS
I figured out the math they used for the conversion...

They actually meant 482C = 899.6F

Rounded off 482C = 900F

Flip the 9... 600F

Mathmatical dyslexia kicks in...

600C = 482F

At least that's the answer I got...

btw... 1st ® post

jmiller
User Rank
Platinum
I'd like to learn more too.
jmiller   8/21/2011 8:58:41 PM
NO RATINGS
I'd like to learn about the design as well.  However, I like it when young engineers or in this case a student start to think outside the box and look at ideas that may be overlooked by others.  It's a good opportunity for us "others" to take a second look at something like plastic ball bearings.  I've had a little experience with plastic bearings at lower temps.  My experience was positive because of the chemical resistance of the plastic.

Another idea may be to use plastic slides rather than bearings in some instances.  In some designs a roller bearing type system may be a little overkill.

BobGroh
User Rank
Platinum
Not enough information here!
BobGroh   8/21/2011 11:51:25 AM
NO RATINGS
Interesting but way too little information.  And, IMHO, way too little engineering design.

sbkenn
User Rank
Gold
didn't work last time
sbkenn   8/21/2011 7:07:25 AM
NO RATINGS
That something has always been done that way is the worst reason for not changing it !  Congrats to most people for trying new ways, just evaluate the risks, the failures and be careful.  Far too many fail and don't put much effort into finding out why.

William K.
User Rank
Platinum
Re: We tried that before...Plastic Bearings in Jetpack
William K.   8/19/2011 1:13:24 PM
NO RATINGS
They all jumped on one error but missed the part about the bearings not being in the high temperature area. So, although there is a serious error, it is in a different area..

If the bearings are replaced every few flights, it would be very interesting to know why, since I don't do any applications where service that often would be accepted. In fact, A lot more information about the jetpack would be interesting. I don't think that the location of the jets was obvious, in fact, I did not see anything that looked like a jet any place above the wearers cg. and so I would really like to know how it is made to be stable. It does seem to be quite different from the other jetpacks that I have seen. So more information on that part would be good.

I do wonder more than a little about the durability of the IGUS bearings if they must be replaced that often, how about a description of why? 

Mission Control
User Rank
Iron
Re: We tried that before...
Mission Control   8/19/2011 11:15:04 AM
NO RATINGS
Welcome to the world of flight.  For the pilot's safety and longevity, a bearing that keeps him secured to his craft is an important component.  The aviation authorities probably thinks so as well.  This old guy would rather see an established material used with a robust configuration (AKA overkill) on this critical component until the loading parameters are better defined and the plastic bearing can be tested and confirmed to a much higher reliability.  Why do you think aircraft cost so much?

Nugent_56
User Rank
Gold
Re: We tried that before...
Nugent_56   8/19/2011 10:01:41 AM
NO RATINGS
more like 1112 degrees F!

KentAkselsen@KenncoMfg.com
User Rank
Iron
Article's temperature conversion is wrong.
KentAkselsen@KenncoMfg.com   8/19/2011 9:56:49 AM
NO RATINGS
My conversion formula says that 600C = 1112F, which is way too high for plastics.  
250C = 482F, which is in line with published working temperatures for PEEK.

"Bearings made from PEEK compounds can take thermal conditions up to 600C (482F).Bearings made from PEEK compounds can take thermal conditions up to 600C (482F)."

Page 1/2  >  >>


Partner Zone
Latest Analysis
A Frost & Sullivan study finds that increased cyber attacks are prompting a flurry of innovative protection tools.
Devices and interconnected systems are finding a foothold not only in our homes but in mainstream organizations. Here are three tips to mitigate the risk.
What makes this movie stand out from the typical high school sports story is that the teenagers are undocumented immigrants, and the big game is a NASA-sponsored marine robotics competition. Like many other Hollywood movies, however, Spare Parts only tells part of the story. What the film shows -- and doesn’t show -- raises important issues affecting STEM education in the US.
Instead of sifting through huge amounts of technical data looking for answers to assembly problems, engineers can now benefit from 3M's new initiative -- 3M Assembly Solutions. The company has organized its wealth of adhesive and tape solutions into six typical application areas, making it easier to find the best products to solve their real-world assembly and bonding problems.
Load dump occurs when a discharged battery is disconnected while the alternator is generating current and other loads remain on the alternator circuit. If left alone, the electrical spikes and transients will be transmitted along the power line, leading to malfunctions in individual electronics/sensors or permanent damage to the vehicle’s electronic system. Bottom line: An uncontrolled load dump threatens the overall safety and reliability of the vehicle.
More:Blogs|News
Design News Webinar Series
2/25/2015 11:00 a.m. California / 2:00 p.m. New York
12/11/2014 8:00 a.m. California / 11:00 a.m. New York
12/10/2014 8:00 a.m. California / 11:00 a.m. New York
3/31/2015 11:00 a.m. California / 2:00 p.m. New York
Quick Poll
The Continuing Education Center offers engineers an entirely new way to get the education they need to formulate next-generation solutions.
Mar 30 - Apr3, Getting Hands-On with Cypress’ PSoC
SEMESTERS: 1  |  2  |  3  |  4  |  5  |  67


Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.
Learn More   |   Login   |   Archived Classes
Twitter Feed
Design News Twitter Feed
Like Us on Facebook

Sponsored Content

Technology Marketplace

Copyright © 2015 UBM Canon, A UBM company, All rights reserved. Privacy Policy | Terms of Service