Now with advanced technology steel balls are being replaced by ruby, sapphire, ceramic balls and glass balls. Because of their high durability and resistance their demand is increasing in industrial use. The precision balls such as the ruby ball, sapphire balls, Spinel Ball and glass ball lens are used by a large number of machine applications, especially in the fiber optic collimation industries and opto-electronic industries throughout the globe.
Glass balls are used in fiber optics applications because they can be made optically clear. Other than this precision glass balls provide a simple, precise and economical means of indicating flow rates in fluid systems. In rotameters, black glass balls are used as floats or sight indicators. Precision black glass balls are used in aircraft slip and turn indicators and other aircraft instrumentation. Polished, soda lime glass balls and borosilicate glass balls provide an extremely good seal making glass balls ideal for check valves in food processing, pharmaceutical, and photographic processing equipment.
Ceramic balls in a host of compositions and formulations are of varied use, like high precision Cubic Zirconia balls of different sizes are most commonly used as check valves in flow control applications. When subject to stress by impact, grinding, or cracking, a Zirconia ball undergoes "transformation toughening" which stops cracks from spreading and actually makes the ball stronger in the stressed area than what it was originally. 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.
Ball lenses are highly polished spheres and Half Ball Hemisphere made of optically transparent homogeneous materials. Carefully controlled manufacturing process produces spheres with precise diameters and unsurpassed surface quality. These lenses can be used as fiber-optics collimators. In order to accommodate different fiber-arrays pitch, the edge of the lens may be ground to a desired width. You can find them diameter from 0.200 mm to 5 mm.