ROTOR BEARING SUPPORTS
FOR WIND TURBINES
Asymmetric Spherical
Roller Bearings
ROTOR BEARING SUPPORTS FOR WIND TURBINES
Asymmetric FAG spherical roller bearings
Reliable rotor bearing supports
As a development partner to the wind turbine industry, we have been producing bearing supports
for this sector for over 30 years. In partnership
with our customers, we develop the most efficient
bearing support for every application.
The rotor shaft bearing support is of central importance in wind turbines. This is where all the forces
act that are induced by the wind.
Profiled rolling elements
with Triondur C coating
Rigid central rib
FAG spherical roller bearings are suitable for extremely heavy loads. We have consistently further
developed this proven bearing solution in order to
increase the operating life even further.
Product features
•Asymmetric contact angle
•Adjusted internal clearance
•Profiled rolling elements
Asymmetric
contact angle
•Rigid central rib
Adapted bore diameter
•Rolling elements coated with Triondur C
•Identical dimensions to standard bearings
•Inner ring matched to suit the shaft for reconditioning
ROTOR BEARING SUPPORTS FOR WIND TURBINES
3.Increased robustness due to lower key wear
values
Customer benefits
•Longer operating life
•Interchangeable with standard bearings
•Reduced overall operating costs (TCO)
1
Axial forces
70 %
Symmetric with
floating central rib
60 %
Time proportion
2.Increased robustness due to further decrease
in the contact pressure
Symmetric with floating central rib
Symmetric with fixed central rib
Asymmetric with fixed central rib
50 %
Symmetric with
fixed central rib
40 %
Asymmetric with
fixed central rib
30 %
20 %
10 %
2
0 %
Contact pressure
Symmetric with floating central rib
Asymmetric with fixed central rib
Key wear value [p*v]
combined radial and
axial load
Technical advantages
1.Reduced vibrations in the drive train due to
increased axial rigidity
Axial displacement
Asymmetric design for even higher axial load
carrying capacity
The asymmetric spherical roller bearing has a
larger contact angle on the bearing row subject
to axial loads and a smaller contact angle on the
bearing row subject only to radial loads.
3
-80
-60
-40
-20
0
Roller length
20
40
60
80
OSP / D-D / 201510.2 / Printed in Germany by wünsch
Schaeffler Technologies AG & Co. KG
Georg-Schaefer-Strasse 30
97421 Schweinfurt
Germany
Internet www.schaeffler.de/en
[email protected]
www.schaeffler.de/windpower
Every care has been taken to ensure the
correctness of the information contained
in this publication but no liability can be
accepted for any errors or omissions.
We reserve the right to make technical
changes.
© Schaeffler Technologies AG & Co. KG
Issued: 2015, October
This publication or parts thereof may not
be reproduced without our permission.
© Schaeffler Technologies AG & Co. KG