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Designation system

Additional designation suffixes used with SKF hybrid deep groove ball bearings are explained in the following.
Balls made of silicon nitride
Special design for wind turbine generators
Contact seal, FKM, on both sides
Displaced clearance range comprising the upper half of the C3 plus the lower half of the C4 clearance range
Grease fill 10–15% of the free space in the bearing
Bearing rings heat stabilized for operating temperatures ≤ 150 °C (300 °F)
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