10 percent of the friction of a regular ball bearing
Created on: 05/27/15 12:35 AM
Replies: 11
alg8er
Joined: 02/10/09
Posts: 1217
Grn14
Location: Montana
Joined: 02/25/09
Posts: 15511
RE: greaseless ball bearings
05/27/15 9:30 AM
That's just killer!Goodbye ceramics.If that bearing rolled like that without a load...imagine how it'd work with a load.I'd be a bit concerned though that over time,with heat affecting the unit,would the internal parts remain stable?I suppose they've made sure in the choice of metallurgy here that they would.
* Last updated by: Grn14 on 5/27/2015 @ 9:31 AM *
Rook
Joined: 03/28/09
Posts: 20592
RE: greaseless ball bearings
05/27/15 2:45 PM
I see why it rolls better but I can't believe they would last long without grease and I think there would be a lot of dirt that would get in them and make them wear even faster. Regular bearings would spin freer without grease too but nobody makes them greaseless.
alg8er
Joined: 02/10/09
Posts: 1217
Rook
Joined: 03/28/09
Posts: 20592
tooncinator
Location:
Joined: 06/07/11
Posts: 273
alg8er
Joined: 02/10/09
Posts: 1217
RE: greaseless ball bearings
05/28/15 3:48 AM
the leaf shaped hole is to keep the balls spaced evenly, which is the purpose of the grease and races in a normal bearing. Contact of the balls results in higher friction and uneven stress loads. According to them anyway. Grease attracts dirt. With no grease to stick too, they should stay cleaner, cooler, and last longer. theoretically. Interesting idea.
* Last updated by: alg8er on 5/28/2015 @ 3:54 AM *
Grn14
Location: Montana
Joined: 02/25/09
Posts: 15511
Rook
Joined: 03/28/09
Posts: 20592
RE: greaseless ball bearings
05/29/15 3:28 PM
Thanks for sinopsis. I was not able to watch the full video. OK I see there is no contact with an outer race. Back in the day, I saw bearings like these on skateboards and rollerskates. You could see the balls and sometimes they would even fall out. The better bearings were sealed. Maybe this is a new twist on an old idea.
alg8er
Joined: 02/10/09
Posts: 1217
RE: greaseless ball bearings
05/30/15 2:09 AM
I'm amazed at some of the innovations I've read about in the last couple years. I only wish I could get results after these ideas go to market. Some that I read about last year, that I thought were amazing, I haven't seen anything. No backers, bad results, who knows.
Grn14
Location: Montana
Joined: 02/25/09
Posts: 15511
alg8er
Joined: 02/10/09
Posts: 1217
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