Ceramic rolling elements
Two-piece PEEK cage
The technology that makes it possible
PEEK cage 80% lighter than brass cage boosts the limiting speed
Lower temperatures longer grease life, extend relubrication intervals
A combination to raise reliability and robustness
Ceramic rolling elements
Prevent electric current damage
Enable higher speeds
Extend bearing service life and grease life
Reduce or eliminate false brinelling damage
Reduce wear caused by solid contaminants
Optimized pocket geometry
Homogeneous material
Strong clamping of cage half’s
80% mass reduction
PEEK Cage
More flexibility in your design choices
Get more power from smaller motors with SKF Hybrid Deep Groove Ball Bearings
For operating conditions that demand more
In railway applications, bearings are subjected to increasingly demanding operating conditions. This includes risks of contamination from abrasive dust, poor or inadequate lubrication and vibration. The passage of electric currents can also cause damage or premature failure of standard bearings (rings and rolling elements made of bearing steel). Costly, in terms of machine downtime, lost productivity and increased maintenance needs.
Electrical current damage
Electrical insulation
Resist false brinelling
Vibrations
Long service life in poor lubrication conditions
Extend grease life
Inadequate lubrication
60%
50%
Lower thermal expansion coefficient
Lower friction coefficient
Low adhesion between silicon nitride and steel, no risk of smearing. Less frictional heat with very thin lubricant film
Quieter than ever
The optimized cage design boosts the limiting speed. The two-piece PEEK (polyetheretherketone) and polyamide cage allows a 60% increase on limiting speed compared to a brass cage and a more than 100% increase compared to a single piece polyamide cage.
With its patented design, the new two-piece cage is highly robust, protecting itself from deformation in high speeds. This has also led to less temperature increase during rotating, extending grease life.
The SKF Hybrid Deep Groove Ball Bearings emit even less noise than bearings with a solid brass cage. It is mainly the shape of the cage pocket together with the improved surface roughness and in combination with weight and material that reduces the noise emission of the bearing.
Two - piece PEEK/
Polyamide cage
Two-oiece
Brass cage
Single piece
Polyamide cage
1.6M
ndm
1.0M
ndm
0.8M
ndm
Temperature at marginal lubrication conditions
°C
rpm
Vibration level comparison
Two-piece PEEK/
Polyamide cage
Two-piece
Brass cage
18% lower
vibration
Single piece
Polyamide cage
0.8M
ndm
1.0M
ndm
Two-piece
Brass cage
Two - piece PEEK/
Polyamide cage
1.6M
ndm
Lower temperatures, longer grease life
rpm
°C
Temperature at marginal lubrication conditions
Vibration level comparison
Two-piece PEEK/
Polyamide cage
Two-piece
Brass cage
18% lower
vibration
Optimized cage design boosts the limiting speed
dm = bearing mean diameter (mm)
n = bearing speed
Quieter than ever
Ceramic (silicon nitride) rolling elements
Lower density vs steel, enable higher speeds and frequent starts and stops.
Higher modulus of elasticity vs all steel bearings, increased stiffness
More stable over temperature gradients and more accurate preload/clearance control
60% higher speed
100% higher speed
Two-piece
Brass cage
Single piece
Polyamide cage
Two - piece PEEK/
Polyamide cage
High wear resistance
Abrasive dust
contamination
More flexibility in your design choices
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