The hardest
to perfection



No limits!


for Optical


Welcome to the frontier of physics

Swiss Precision in Ceramics

Swiss precision is our unsurpassed strength. We grind and polish the roundest balls in the world and manufacture high-precision ceramic components. Ceramic, sapphire or ruby – no material is too hard for us. With every solution we develop for you, we push the boundaries of physics.

Precision balls

The roundest you can find.

It starts with aluminium oxide and ends with the perfect ball. In between are decades of experience and innovation. The dimensions: 0.2 to 60 mm. The materials: sapphire, ruby, ceramic and more. The shape: perfectly precise, perfectly round.

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Material properties

Sapphire (Al2O3)  Very hard material, completely transparent, monocrystalline aluminium oxide, synthetically produced, inert against aggressive media such as acids and alkali.

Ruby (99% Al2O3 + 1% Cr2O3) The red version of sapphire, contains small pieces of chromium oxide. The most commonly used material for styli.

Aluminium oxide (Al2O3) Simply referred to as ceramic, this is the most commonly used high-performance ceramic material. Outstanding hardness, excellent insulator. Purity improves its mechanical properties, which is why Saphirwerk mainly uses ultra-pure Al2O3.

Zirconium oxide (95% ZrO2 +5% Y2O3) High fracture toughness is achieved through stabilisation. Similar heat expansion to steel. Good for bend-resistant rods and balls for ball bearings.

Silicon nitride (>90% Si3N4) Very high fracture toughness, small elastic modulus and low coefficient of thermal expansion, exceptionally wear resistant. Suitable for ball bearings and other uses.

Hard metal (94% WC + 6% Co) A composite material characterised by superior hardness and wear resistance. Distinguished by its high density. Primarily used for cutting tools.



For the finest of details.

Made of the hardest materials, for highly sensitive applications, in a variety of shapes and sizes. Used by the best in the world. For finely tuned measurement technology.

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Materials and product range

Calibration balls


These are the reference that determine accuracy. The zero point of comparison. The source of your precision. For visual and tactile measurements.

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The tactile reference

Nominal Size (mm)10 – 15 – 20 – 25 – 25.4 – 30 – 45 – 6015 – 20 – 25 – 3015 – 20 – 25 – 30
Deviation form nominal size (mm)±0.1±0.1±0.1
MU D (nm)300200200
Roundness RONt (nm)1308040
MU RONTt (nm)404040
Hardness (HV)210021002100
Thermal expansion coefficient (20°C)4.6x10-6/K4.6x10-6/K4.6x10-6/K

The optical reference

Nominal size (mm)06 – 10 – 15 – 20 – 25 – 30 – 45 – 6020 – 25 – 30
Deviation from nominal size (mm)±0.1±0.1
MU D (nm)300300
Roundness RONt (nm)500500
MU RONt (nm)4040
MaterialTOPIC whiteTOPIC black
Hardness (HV)~10001800
Thermal expansion coefficient (20°C)5x10-6 / K5x10-6 / K
Applicationopticaloptical and tactile

Haute Horlogerie

Luxury watchmaking.

Using the most durable materials, we create shapes that harmonise precision and aesthetics for timeless beauty in its most exquisite form.

Dosing and analysis technology

The decisive detail.

The big difference begins in the nano range, which is why we manufacture components for valves, pumps, HPLC machines and other applications with one-of-a-kind precision. From series production to individual parts as exclusive as you like.