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One of the advantages of advanced ceramics is the ability to grind, lap and polish them to extremely tight tolerances. Ceramics physical stability enables the component to maintain precise tolerancing even in severe environments.
Below is a tolerance design guideline to aid you in creating a ceramic component drawing. Kyocera engineers are always available to help with any design concerns or questions. We will work with you to ensure that you get the most out of your ceramic design. Please contact us.
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ITEM |
REF. SIZE |
NO GRINDING |
GRINDING |
|
|
Inches |
As-fired |
Economical |
Typical |
Special |
|
Diameter O.D. |
<1.0 |
+/-.012 |
+/-.010 |
+/-.005 |
+/-.0004 |
|
|
>1.0 |
+/-1% |
+/-.015 |
+/-.005 |
+/-.0004 |
|
Hole I.D. |
<1.0 |
+/-.012 |
+/-.010 |
+/-.005 |
+/-.0004 |
|
|
>1.0 |
+/-1% |
+/-.015 |
+/-.005 |
+/-.0006 |
|
Hole Pitch |
<1.0 |
+/-.012 |
+/-.010 |
+/-.005 |
+/-.0008 |
|
|
>1.0 |
+/-1% |
+/-.015 |
+/-.005 |
+/-.0008 |
|
Angle |
- |
+/-2 Deg |
+/-1 Deg |
+/-30' |
+/-3' |
|
Surface Finish |
- |
32-125 Ra |
64 Ra |
44 Ra |
<8 Ra |
|
Flatness |
<8.0 |
.006/inch |
.005 |
.002 |
.00002 |
|
|
>8.0 |
.008/inch |
.008 |
.005 |
.00004 |
|
Parallelism |
<8.0 |
.01/inch |
.005 |
.002 |
.0008 |
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|
>8.0 |
.02/inch |
.005 |
.002 |
.0008 |
|
Radius |
<1.0 |
+/-.02 |
+/-.015 |
+/-.01 |
+/-.005 |
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|
>1.0 |
+/-1% |
+/-.02 |
+/-.012 |
+/-.005 |
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Chamfer |
<1.0 |
+/-.02 |
+/-.015 |
+/-.01 |
+/-.002 |
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>1.0 |
+/-1% |
+/-.02 |
+/-.012 |
+/-.003 |
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Tighter tolerancing is achievable depending on the component design and material selection.
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