The best material available
Ceramic balls can be found in a variety of materials. The best material available - and the one used for our bearings - is silicon nitride (Si3Ni4).
The increased hardness of the ball means that the contact area between the ball and the track is reduced, which leads to lower friction, higher potential speeds and less energy wasted. The hardness and extremely smooth surface also means that the balls are far more durable than steel balls.
Faster ROI in spite of higher cost
Hybrid bearings with ceramic balls carry an additional cost compared to conventional bearings. However, when used in applications with high loads, large temperature extremes, contaminated production environments or in food production, the ROI is remarkably short, giving producers a much improved competitive power in their production.
Our ceramic balls are produced by a few, select manufacturers capable of supplying balls of certified high quality.
What the scientists have to say
"The high hardness and excellent high-temperature performance of ceramics are attractive for critical rolling-bearing applications, such as in high-thermal-efficiency engines. In addition, the lower density of ceramics permits lower centrifugal loads, less skidding at high speeds, and, consequently, results in longer bearing component life than conventional bearing steels or alternative super-alloys or cermets. Silicon nitride has the lowest friction and elastic modulus of the available ceramics, which reduce bearing contact stresses."
Bharat Bhushan & Lewis B. Sibley, Tribology Transactions Journal, Vol 25 issue 4, Taylor and Francis 2008