Tolerances
We provide piezo ceramic elements manufactured to the
industry tolerance values listed here. We can prepare elements to tighter
tolerances on request. Items also are available "as
fired" (no OD, ID, length or width machining), when
dimensional requirements are not critical.
|
Standard tolerances for electrical / piezoelectric
characteristics are:
- capacitance: ±20%
- d33 value: ±20%
- frequency: ±5% (to ±0.5% on request)
|
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We will attach electrical leads on request. Standard leads
are:
- 28AWG / 2" or 4" long
- or 26AWG / 1.25", 4", or 6" long
- parallel arranged.
Please be specific when requesting parts,
tolerances, or electrode patterns. Provide drawings or sketches
for parts or electrode patterns, and include ID
tolerance if requesting rings or cylinders (tubes). For custom
electrical leads, please specify AWG and length and provide a
drawing showing the desired locations.
Standard Machining Tolerances for APCI Ceramic Parts
| Nominal
Value |
Standard
Tolerance (±) |
| Disc/Ring/Cylinder
(Tube):
Outer Diameter |
|
<1.000" |
0.010" |
 1.000"
to <1.500" |
0.015" |
|
1.500"
to <2.000" |
0.025" |
| 2.000" |
0.040" |
| <25
mm |
0.25
mm |
| 25
mm to <38 mm |
0.38
mm |
| 38
mm to <50 mm |
0.60
mm |
| 50
mm |
1.00
mm |
| Ring/Cylinder
(Tube):
Inner Diameter |
| <0.250" |
0.010" |
| 0.250"
to <0.500" |
0.015" |
| 0.500"
to <1.000" |
0.020" |
| 1.000" |
0.025" |
| <6
mm |
0.25
mm |
| 6
mm to <13 mm |
0.38
mm |
| 13
mm to <25 mm |
0.50
mm |
| 25
mm |
0.60
mm |
| Plate:
Length or Width |
| <0.500" |
0.005" |
| 0.500"
to <1.000" |
0.010" |
| 1.000"
to <1.500" |
0.015" |
| 1.500"
to <2.000" |
0.025" |
| 2.000" |
0.040" |
| <13
mm |
0.13
mm |
| 13
mm to <25 mm |
0.25
mm |
| 25
mm to 38 mm |
0.38
mm |
| 38
mm to <50 mm |
0.60
mm |
| 50
mm |
1.00
mm |
| All
Parts: Thickness |
| 0.008"
to <0.200" |
0.001" |
| 0.200" |
0.002" |
| 0.20
mm to <5.00 mm |
0.025
mm |
| 5.00
mm |
0.05
mm |
|
