Precision balls of the highest grade

2

5.4

9.4

15

HV hardness

E [GPa] elastic modulus

[g/cm3] density

[10-6/K] thermal expansion

* Only at 20oC

10

8

200

1200

6.2

3.5

3.9

8*350

1

6

300

7

3

440640

1500

1800

1900

2300

[MN/m3/2] fracture toughnessK ICMaterials and range

SapphireExtremely hard material, com-pletely transparent, monocrys-talline alumina, synthetically manufactured and inert to ag-gressive media such as acids and alkalis.

CarbideComposite material character-ised by its wearresistance due to high level of hardness. Note its high density. Used mainly for cutting tools.

RubyRed version of sapphire, con-tains a small amount of chro- mium oxide. The most widely used material for styli balls.

AluminaSimply referred to as ceram-ic, this is the most widely used high-performance ceramic ma-terial. Extremely hard, good in-sulator. As purity enhances the mechanical properties Saphir- werk only uses the highest-purity AlO.

ZirconiaHigh resistance to fracture achieved through stabilisation. Thermal expansion similar to steel. Applications include rigid rods and balls for ball bearings.

Silicon nitrideVery high resistance to fracture, small elastic modulus and low thermal expansion coefficient. Particularly wear-resistant. Uses include ball bearings.

Properties of processed materials by Saphirwerk AG: www.saphirwerk.com

3swiss precision in ceramics

Dimensional and shape accuracy, roughness per DIN 5401 Part 1

Our balls have made a name for themselves worldwide thanks to their exceptional accuracy and high quality. We have honed and perfected our process over many years, enabling us to

achieve precise repeatability. Reliable and, on request, in mul-tiple versions.

The ceramic balls are made from the toughest materials and are available in many different sizes: the smallest has a diam-

eter of less than 0.2 mm, while the largest is over 50 mm in di-ameter.

Our experience and expertise will provide you with the right solution.

Class Ball up to Deviation from perfect shapeT DWS

Surface rough-ness Ra max.

Diameter vari-ation in LoS V DWL

G3 12.7 mm 0.08 m 0.010 m 0.13 m

G5 12.7 mm 0.13 m 0.014 m 0.25 m

G10 25.4 mm 0.25 m 0.020 m 0.50 m

G16 25.4 mm 0.40 m 0.025 m 0.80 m

G20 38.1 mm 0.50 m 0.032 m 1.00 m

SCS 073 ISO 9001 ISO 13485

Saphirwerk AG Erlenstrasse 36 CH-2555 Brgg Phone +41 (0)32 374 25 85 Fax +41 (0)32 374 25 99

info@saphirwerk.com saphirwerk.com

Basle

Brgg

Berne

Biel

Geneva

Zurich

2014

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odifi

cati

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rese

rved