Performance rotor sleeves

Magnet retention sleeves made from composite materials

First choice for high speed drives for maximum energy efficiency

Wound thermoplastic rotor sleeves are state of the art for electric drives with a high number of revolutions per minute.

Rotor sleeves in electric drives – wrapped rotors increase safety factors

In permanent-magnet drives, the rotor wrap / rotor banding fixates the permanent-magnets on the rotor and carries loads caused by centrifugal forces. Using a sleeve is advisable when bonding alone does not grant sufficient strength or safety in case of malfunction of the drive.

Energetic Advantages through Composite

Increased performance using CFRP and GFRP materials

Composite rotor sleeves have a distinct advantage over alloy sleeves. Due to the low conductivity of the fiber reinforced plastic, eddy currents, caused by electromagnetic excitation, are reduced to a minimum. This has a positive effect on the electric drive’s level of efficiency.

Increased performance of thermoplastic materials

Rotor wrappings made in thermoplastic tape winding can provide another benefit: As the semi-finished materials used in the process are very thin, sleeves can be manufactured with low wall thicknesses. Those however still provide a maximum level of strength due to optimized fiber orientation in the part. The gap between rotor and stator can be reduced even further and efficiency improves even more.

High volume series compatibility through automation

As electric drives gain importance in various fields of application, volumes and variations increase. Thermoplastic winding offers perfect preconditions for current and future high volume series through its good automatability and scalability.