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Ceramic Hybrids
[ click below to view enlarged charts ]
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RUNNING SPEED |
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Running speed of large diameter ceramic balls exceed same-size steel
ball by 40%. Converting to a small diameter ceramic ball will boost running speeds
an additional 15%. |
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OPERATING TEMPERATURE |
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Lower operating temperature. As running speeds increase, ceramic balls always
run cooler than conventional steel balls. With reduced heat build up, lubricant life
is prolonged. |
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SERVICE LIFE |
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Service life of ceramic hybrid bearings is two to five times that of
conventional steel ball bearings, depending upon operating conditions. |
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VIBRATION |
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Vibration tests comparing spindles with steel ball bearings and the same spindle retrofit
with ceramic hybrids. Vibration levels averaged two to seven times lower with
silicon nitride balls. |
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PROPERTIES |
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Ceramic balls are lighter and harder than steel balls, characteristics
which improve overall bearing performance. |
Use of ceramic (silicon nitride) balls in place of steel balls can radically improve bearing performance several ways. Because ceramic balls are 60% lighter than steel balls, and because their surface finish is almost perfectly smooth, they exhibit vibration levels two to seven times lower than conventional steel ball bearings.
Because of the unique properties of silicon nitride, ceramic balls drastically reduce the predominant cause of surface wear in conventional bearings (metal rings/metal balls). In conventional bearings, microscopic surface asperities on balls and races will "cold weld" or stick together even under normal lubrication and load conditions. Since ceramic balls will not cold weld to steel rings, wear is dramatically reduced. Because wear particles generated by adhesive wear are not present in ceramic hybrids, lubricant life is also prolonged. The savings in reduced maintenance costs alone can be significant.
Even greater performance can be realized by using Cronidur® 30 Ceramic Hybrids.
- Ceramic hybrids can boost running speeds by 40% to 50%.
- Ceramic hybrids run significantly cooler than standard steel ball bearings.
- Lower operating temperatures help extend lube life.
- Ceramic hybrids will out last steel ball bearings up to five times.
- Ceramic hybrids have higher rigidity characteristics
- Ceramic hybrids are quieter running
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