Hybrid Bearings
SPEKUMA supply Hybrid Bearings, with the rings made of steel and the Balls of ceramics.
Some advantages with Hybrid bearings:
- Low friction
- Low abrasive wear out
- Low cost lubrication
- Corrosion resistant
- Electrically isolating
- Higher speed
See also Ceramic Bearings and Sealed Spindle Bearings
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STEEL BALL BEARINGS
(Not Stainless Steel) |
HYBRID BEARINGS |
CERAMIC BEARINGS
(Si3N4) |
| Temperature resistance |
Depending on which type of holder and seal. But normally 120ºC. |
Depending on which type of holder and seal. |
Depends on temperature sensitivity on the cage.
Up to 800ºC |
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Lubrication
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Lubrication is required |
Less Lubrication is required |
No Lubrication is required |
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Corrosion
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Corrodes |
The ceramic balls are corrosion resistant |
Corrosion resistant |
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Lifetime
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Normal |
Approx. 5-20 times longer than Steel Ball Bearings |
Low wear and longer lifetime |
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Strength
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Normal |
High compared to conventional bearing steel |
Extremely high |
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Electrical isolation capability
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Electricity destroys the Bearing surfaces |
Very good |
Very good |
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Weight
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7,85 g/cm3 |
Ceramic Balls cause an approximate weight reduction of 60%, resulting in a lower weight than Steel Ball Bearings |
3,20 g/cm3
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