Ceramic Bearings Vs Stainless Steel

In practice rolling friction cannot be eliminated so the likely figure is more like 10 of the 3 ie 0 3.

Ceramic bearings vs stainless steel. I was considering using ceramic bearings in a spindle i m building but i m concerned about the ceramic s impact resistance. Rolling resistance is the key trump card promoted by ceramic bearing fans. There are many other differences but for turbo applications that is the main draw. While regular bearings are made from stainless steel ceramic bearings are made from ceramic silicon nitride si2n4.

If you opt for full ceramic bearings bearings with ceramic cases in addition to ceramic balls you re looking at about 800 per set. Ceramic bearings are more dimensionally stable at high temperature than stainless bearings. They have stainless steel inner and outer bearings and ceramic balls inside for increased speed. Stainless join date aug 2008 location californeeeah posts 1 529 post thanks like likes given 51 likes received 336.

This spindle could be turning a flycutter with interrupted cuts. Or they call them ceramic hybrid bearings. They will both also cope with higher temperatures than chrome steel but ceramic bearings also win here. I recently tested some derailleur pulleys with plain sleeve bearings vs some stainless steel ball bearings and found that under typical conditions the steel ball beairngs in your derailleur consume about 60 mw at full speed that figure is for two.

A set of fine quality ceramic bearings starts out at about 200 usd more than double what you would pay for comparable steel bearings. Schaeffler s data is useful because it shows how small the potential gain by switching from steel to ceramic bearings is. The maximum improvement is a potential 3. Cost of purchase for ceramic and steel bearings.

Full ceramic bearings where the inner and outer bearings are made of ceramic material as well as the balls are super nice too but those can get very expensive. This is mostly due to the additional time spent to perfect a quality ceramic ball. Because ceramic bearings are rounder with a smoother surface and more uniform size friction is reduced and that can contribute to a less energy required. They also have a much higher operating temperature range than stainless which will anneal soften at a much lower temperature.

As someone stated on the first page of this thread derailleur pulleys will make the largest dfference as their rotational speed is highest. Ceramic bearings vs steel bearings ceramic materials offer superior corrosion and heat resistance higher dimensional stability and lower density which facilitates high speed. The first thing that strikes the eye when looking at bicycle bearings is the difference in price between steel bearings and hybrid ceramic bearings.