deutsch | english

Technology Hybrid ball bearings

Properties of ceramic
The ceramic material silicon nitride Si3N4 is excellent for use in precision ball bearings. A comparison between silicon nitride and conventional bearing steel 100 Cr6 is shown in the diagram:

Further advantages of ceramic are:

Advantages for the user

Longer service life
Experience shows that twice the service life in comparison to conventional bearings can be reached by using hybrid bearings. Depending on the operating conditions even longer service life can be achieved.

The reasons for this are:

Higher speeds
The attainable speeds depend above all on the thermal conditions in the bearing. Because of lower friction, the hybrid bearing generates less power loss. Therefore the speed limit is clearly increased. Depending on the application, speed rises of up to 30% are possible compared to bearings with steel balls.

Low cost lubrication

Grease lubrication can be used in higher speed ranges.

The limiting speed for minimum oil lubrication increases significantly. In many cases, it can replace the expensive oil jet lubrication.

Higher rigidity

Improved machining accuracy
The following factors lead to an improvement of the surface quality and accuracy of machined parts.

Load ratings

DIN/ISO standards do not specify any calculation methods for the determination of load ratings of hybrid bearings. If the classical fatigue theory is used, the load ratings and the service life will be lower than those for steel balls. However, experience shows that the actual service life is significantly longer. Due to this, GMN uses the same load ratings as for conventional bearings.  

Examples of application

More applications are:


Summary

When conventional bearings fail, the solution is often to use hybrid bearings. It is important always to take the whole system into consideration and to carry out a "weak point" analysis. GMN's application engineers would be pleased to assist you.

 

Search

Product search
Ball Bearings

Type designation or
S for spindle bearings
KH for optimized spindle bearings
HY for hybrid bearings
x-undefined

Our next participations in a fair

Fair website

13. - 18. September,
Chicago

East Building,
Stand E-5253

Fair website

28. September -
02. October, Stuttgart

Hall 4, Stand 4C71

Stand staff >>>

Technical information 

SliCoTec-
outside surface coating
Customers of GMN know the advantages of DLC-coating on the outside surface of the outer ring, especially for floating bearings.


Please click picture to download
the data sheet.

Technical information 

AG-bearings
Relubrication for high speed bearings reduces costs and increases service life.


PLease click picture to download
the data sheet.

Catalogue to download

BIGspi 

BIGspi >>>
Spindle bearings
from 75 to 120 mm

Ball bearing calculation software to download

Globus 2005 Version 4.0.1

Globus 2005
Version 4.0.1 >>>
 

Calculations and
Data sheets -
easy and quick