Precision balls

Ceramic precision balls are available in various materials and dimensions. Precision balls are applied in different products; valves, ball bearings, measuring devices etc. Ceratec holds a large stock of ceramic precision balls.

DIAMETERS

>=0.2 mm, up to

100 mm maximal for silicon nitride, alumina and zirconia

35 mm maximal for sapphire

12.7 mm maximal for ruby

TOLERANCES

Standard tolerance diameter+/- 0.25 micron, roundness+/- 0.01 micron and a very smooth surface. Higher tolerances up to grade 3 according AFBMA and ISO 3290:

Grade	Tolerance diameter	Tolerance roundness	Roughness Ra
3	0.08 micron	0.08 micron	0.012 micron
5	0.13 micron	0.13 micron	0.02 micron
10	0.25 micron	0.25 micron	0.025 micron
16	0.40 micron	0.4 microns	0.025 micron

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