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Tweakers' Asylum Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ. |
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Tweakers' Asylum Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ. |
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In Reply to: Grand Prix Audio Apex ball bearing question posted by WBWB on November 4, 2005 at 21:47:03:
Both silicon nitride (Si3N4) and tungsten carbide (WC) are grey rather than brown. WC is a duller grey, Si3N4 quite shiny. By the way they are both ceramics.The easiest way to tell them apart is simply to weigh them, measure the diameter of the ball and derive the density. Tungsten carbide is about the heaviest ceramic in common use - the density is about 15. Silicon Nitride is 3.3, around the density of common ceramics.
As far as I know WC is the harder of the two but Si3N4 seems to be available with better surface finish.
Mark Kelly
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Follow Ups
- Si3N4 vs WC - Mark Kelly 18:54:15 11/05/05 (6)
- Help on the price... Which is more expenive? - WBWB 21:28:35 11/05/05 (5)
- Depends where you get them - Mark Kelly 23:10:39 11/05/05 (0)
- Addendum - WBWB 21:36:34 11/05/05 (3)
- It is Silicon Nitride, Silicon NitrATE implies oxygen atoms, like sulfATE, or chlorATE - tonemaniac 04:45:36 11/06/05 (2)
- How do you identify the Apex Nitride upgrade bearings? - WBWB 06:51:50 11/06/05 (1)
- Nitride bearings are light weight feeling, tungsten is as heavy as lead - tonemaniac 09:01:37 11/06/05 (0)
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