Ruby Sapphire Balls

Uses:
Synthetic sapphire balls are used in applications requiring hardness, lightness, corrosion-resistance and electrical non-conductivity such as bearings, and as wear points in instruments.  Commonly mounted on stems, ruby sapphire balls are also used as probes in coordinate measuring machines, in gauging devices, and in as floats in flowmeters where precise diameter tolerance is important.  Ruby sapphire balls have a coefficient of thermal expansion just 25% that of most metals.  Some sizes are available from stock; others may be manufactured to your specifications.  online contact form

Corrosion Resistance:
Synthetic sapphire balls or as commonly referred to Ruby Sapphire balls are inert to most acids, and/or hydroxides.  Ruby Sapphire balls are resistant to a large variety of reagents even at very high temperatiures (1800ºF).  Hydrogen fluoride does not attack ruby sapphire up to 570ºF.

BALL GRADE
AVAILABLE 
SIZES
ROUNDNESS DIA. TOL/BALL
UNIFORMITY DIA. TOL/CONT.
BASIC DIAM TOLERANCE
MARKING INCREMENT
SURFACE FINISH
Inches
Inches
Inches
Inches
Inches
Micro Inch
24
1/8 – 1/2
.000024
.000048
.0001
.000024
5.0 (aa)
100V
1 -1-3/4
.0001
.002
.0001
5.0 (aa)

Ceramic Ball Chart