Shapes and Mechanical Tolerances

SHAPES
In addition to the shapes shown, custom shapes are also available. Parts can be made to the size ranges shown, but not in every combination of thickness and lateral dimensions. A separate list of standard sizes of parts available can be obtained on request.

STANDARD MECHANICAL TOLERANCES
Tolerances on machined dimensions apply to most components. For large size parts, confirmation of the tolerances achievable will need to be agreed prior to placing an order. Components can be produced to tighter tolerances ((e.g. Concentricity within 0.13mm (0.005”) TIR and surface finish (Ra) within 1.6μm (62μin)). Care should be taken not to over-specify a tolerance as this can significantly increase costs.

	From	To
Diameter	3 mm (0.12“)	255 mm (10“)
Thickness	0.2 mm (0.008“)	25 mm (1”)

Discover more information, applications & features: Piezoelectric Discs

	From	To
Length	1 mm (0.04”)	165 mm (6.5”)
Width	1 mm (0.04“)	165 mm (6.5”)
Thickness	0.2 mm (0.008“)	35 mm (1.4”)

Discover more information, applications & features: Piezoelectric Plates

	From	To
Outside diameter	3 mm (0.12“)	150 mm (5.9”)
Inner diameter	0.5 mm (0.02”)	140 mm (5.5”)
Thickness	0.2 mm (0.008”)	25 mm (1”)

Discover more information, applications & features: Piezoelectric Rings

	From	To
Outside diameter	1 mm (0.04”)	150 mm (5.9”)
Inner diameter	0.5 mm (0.02”)	140 mm (5.5”)
Length	1 mm (0.04”)	150 mm (5.9”)

Discover more information, applications & features: Piezoelectric Tubes

	From	To
Outside diameter	6 mm (0.24”)	203.2 mm (8“)
Wall thickness	1 mm (0.04”)	10 mm (0.39”)

Discover more information, applications & features: Piezoelectric Hemispheres

	From	To
Diameter	6 mm (0.24”)	203.2 mm (8“)
Thickness	1 mm (0.04”)	10 mm (0.39”)

Piezoel. Staves

Outside diameter	±0.15 mm
Inner diameter	±0.15 mm
Length & width	±0.15 mm
Thickness	±0.05 mm
Squareness (edge to face)	Within 0.15°
Concentricity	0.2 mm TIR
Surface flatness (lapped parts)	12 μm (0.012 mm)
Surface flatness (large sliced parts)	15 μm (0.015 mm)
Parallelism (lapped parts)	12 μm (0.012 mm)
Parallelism (large sliced parts)	60 μm (0.06 mm)
Surface finish (Ra)	3 μm (0.003 mm)