Why are steel ball bearings so expensive


Leave the archive and display this page in the standard design: Ceramic - sense or nonsense?



I would be interested to know what ceramic bearings really bring in compared to normal bearings.

Whether in the headset, bottom bracket or in the hubs, you always pay a hefty surcharge for it.

Do you really drive faster with ceramic bearings with the same performance, do I really brake better on ceramic and does my ceramic oil lubricate better?
Or is it only the manufacturers who benefit?

Oh yes, I already know that you don't drive 10 km / h faster with the ceramic stuff, but I would really be interested in the magnitude of the advantage (?).

If enough has already been explained, only the manufacturer benefits.
Ceramic is used for fast rotating bearings, around 20,000 revolutions.

Even at 20,000 rpm, normal steel bearings are sufficient if the lubrication is reasonable. As Medias says, nothing that really makes sense on the bike. With all-ceramic you can save a bit of weight, and if you constantly drive around in seawater, it won't corrode. All other advantages do not come into play on the bike.

Short question, short answer: nonsense

I would be interested to know what ceramic bearings really bring compared to normal bearings .....

Weight!

less mass on the bike: rolleyes:

Weight!
less mass on the bike: rolleyes:

Exactly! The savings e.g. between a Record crank and the Super Record are around 6 g - if that’s nothing! ;)

Exactly! The saving e.g. between a Record crank and the Super Record is ~ 6 g - if that is nothing! ;)

Because only the balls are made of ceramic. They are only of limited use when it comes to saving weight, and if so, then all-ceramic bearings. But they are really expensive ...

Short question, short answer: nonsense

Nonsense, especially in times of crisis (you can take a nice argument for and against everything ...: D), it is important to keep the money cycle alive and to consume it ...

: D: ü;)

Because only the balls are made of ceramic. They are only of limited use when it comes to saving weight; if so, then all-ceramic bearings. But they are really expensive ... You are probably right - the difference between the two sets is already 70 €, it is impossible to imagine what all-ceramic bearings would cost ...

Because only the balls are made of ceramic. They are only of limited use when it comes to saving weight, and if so, then all-ceramic bearings. But they are really expensive ...

More than 20EUR per gram of savings?

I was once told that the hybrid bearings for use on bicycles are complete nonsense and that they even last less long than conventional bearings made of bearing steel.

Since only the balls are made of ceramic in the hybrid bearing, they should wear out faster in connection with dirt and water, because of the different hardness of balls and ring throws ...

But now I also have a ceramic bottom bracket from FSA and was included with my K-Force crank.

I'm curious how long they will last ...

When they are through, I put in normal camps and can still go on with thick pants ...: D

... to keep the money cycle alive and to consume it ...

not only, but accelerate ...
Better than driving fat carts, I'm just saying.

on topic: all bearings ceramic, how much do I save then
100 g? more?

You can clearly see the ceramic on the rim. That anchors - especially when new - quite brutally.

Unfortunately there is only 1 rim with a ceramic coating. And only from 32 °.

Unfortunately, there is only 1 rim with a ceramic coating, no - the other French have something in their range too.
Rigida DP18 and DPX are also optionally available with CSS coating.

Nope - the other French also have something in their program.
Rigida DP18 and DPX are also optionally available with a CSS coating.

Really? Where? Never seen...

Nope - the other French also have something in their program.
Rigida DP18 and DPX are also optionally available with CSS coating.

I want to see it. Please set the link.

I want to see it. Please set the link.http: //www.rigida.com/de/products/road-1/rims-13/dp18-3
http://www.rigida.com/de/products/road-1/rims-13/dpx-3

http://cnc-bike.de/product_info.php?cPath=39_187&products_id=3107&osCsid=ced5613a5f774a7907431978ec4f4ba3
http://cnc-bike.de/product_info.php?cPath=39_187&products_id=3105&osCsid=ced5613a5f774a7907431978ec4f4ba3

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