Tougher than the rest
4-8 times longer service life - at the very least
Research based on the analysis of 1,000 bearings shows that 99.6 % of CeramicSpeed bearings last at least 4 times longer than standard bearings.
In 50 % of the cases the service life of the bearing was between 8 and 20 times longer than the bearings they replaced - even under the influence of sever particle contamination.
In 30 % of these cases, it is expected that the ball bearings will never need to be replaced for the entire service life of the machine.
Higher speed capability
Silicon nitride balls are less dense and much lighter (58 %) than steel balls. This means that the energy requirements for running the machinery will drop - but the main advantage of the low weight is found in a longer service life for the bearing.
The low weight reduces the centrifugal load on the raceway as the bearing spins, and wear and tear are significantly reduced, keeping the bearing in top condition for longer. As an added benefit the bearing can operate at much higher RPMs - up to 50 % higher - giving you the possibility of using long-life bearings in demanding high-speed applications, such as machine tool spindles and turbo machinery.
One of the main advantages of ceramic balls over steel ones is their extremely low friction coefficient - this reduces the need for lubrication quite significantly.
Without lubrication, any bearing will break down quickly. Direct contact between steel ball and steel raceway will lead the bearing to fail rapidly. Steel against steel has a friction coefficient of 0.8, whereas steel against ceramic has a coefficient of 0.2 - or even lower, if the races are coated.
As a result, ceramic balls eliminate the problem of two identical materials breaking each other down.
The hardness and finish quality of the ceramic balls also serves to polish out any damage to the races, whereas this would lead to further breakdown and failure in steel bearings.
CeramicSpeed silicon nitride balls have extremely low thermal expansion coefficiencies - 3.7 K^-1 as opposed to 12.3 K^-1 for conventional steel balls. This allows hybrid bearings using CeramicSpeed balls to be exceptionally well suited for applications with high or low temperatures or in production environments where temperatures are expected to fluctuate between highs and lows.
In fact, our LongLife HighTemp bearings are capable of functioning correctly at temperatures of up to 350 °C (660 degrees Fahrenheit) and in cryogenic environments.
The CeramicSpeed LongLife Corrotec bearing series is designed for humid environments and is built using FDA-grade lubricant, stainless steel races, polymer ball cages and ceramic balls.
With components and lubricants both designed to be in direct contact with food, LongLife Corrotec bearings are approved by the FDA (FDA 21 CFR) and also comply with the regulations within EC 1935.
The lubricant is registered by NSF (H1) and is approved for use in contact with food.
Zero current erosion
In contrast to steel balls, silicon nitride balls insulate very strongly against stray currents. Especially in frequency controlled electrical motors, stray currents can be a severe threat to the motor bearings. Over time, they hamper the smooth running of the bearings by creating micro welds and craters within the raceway - a condition that will grow progressively worse until the motor stops working.
The solution is to use insulating bearings - bearings where the balls are made from non-conductive materials such as silicon nitride.