Schaeffler auf der EUROBIKE 2013 (Halle A3, Stand 807)
Lager-Know-how von Schaeffler sorgt f r h chste Dynamik, Effizienz und Komfort bei E-Bikes
Mit seinem Portfolio an FAG-Sensor-Tretlagern und zahlreichen weiteren Komponenten der Marken INA und FAG sorgt Schaeffler f r Komfort, Dynamik und Effizienz bei E-Bikes. Im Fokus dabei stets: Wartungsfreiheit und eine lange Lebensdauer bei gr tm glichem Leichtlauf.
Unterst tzung nach Ma dank exakter Steuerung
Drehmoment-Sensor-Tretlager der Marke FAG haben sich als Spitzenmodell f r maximalen Fahrkomfort auf dem Markt etabliert. Insbesondere die beidseitige Drehmomentmessung des BBRTTS erm glicht maximalen Fahrkomfort bei hoher Effizienz und Reichweite. Das BBRTTS ermittelt das Gesamt-Drehmoment aus der Summe der Trittkraft von linkem und rechtem Pedal. Situationsabh ngig erkennt die Lagereinheit den Wunsch des Fahrers nach Motorunterst tzung und steuert die Leistungsabgabe entsprechend. Mit bis zu 72 Drehzahlimpulsen pro Kurbelumdrehung bietet es k rzeste Reaktionszeiten der Steuerung, so dass vom Fahrer nur k rzeste Distanzen (ca. 10 cm) zur ckgelegt werden, bis die gew nschte Unterst tzung einsetzt. Herk mmliche Drehmoment-Sensor-Tretlager liefern maximal 36 Drehzahlimpulse pro Kurbelumdrehung, so dass rund 40 bis 100 cm zur ckgelegt werden m ssen, bevor die Unterst tzung greift.
Die hohe Aufl sung und Genauigkeit der Drehmomentsensorik sind Voraussetzung f r die Qualit t des Ausgabesignals und das kurze Ansprechverhalten der Motorsteuerung. Ergebnis f r den Fahrer: Er wird in jeder Situation optimal unterst tzt. Damit verbunden sind nicht nur Komfort, Dynamik und Fahrspa , sondern auch maximale Effizienz, was zu einer Steigerung der Reichweite f hrt.
Das Sensor-Tretlager BBRTS erm glicht die ber hrungslose Messung von Drehzahl, Drehrichtung und Drehmoment (linkes Pedal). Mit bis zu 72 Drehzahlimpulsen pro Kurbelumdrehung bietet es hochaufgel ste Drehmomentsignale f r genaue und komfortable Fahrerunterst tzung, so zum Beispiel im E-Bike von smart (Hersteller: Daimler).
Auch das Sensor-Tretlager Basismodell BBRS pr sentiert Schaeffler in einer weiterentwickelten Variante. Es erm glicht die ber hrungslose Messung von Drehzahl und Drehrichtung. Pro Umdrehung der Welle werden 36 Impulse generiert.
Leichtlauf durch FAG-Rillenkugellager
FAG-Rillenkugellager kommen im Vorderrad-, Hinterrad- und Mittelantrieb zum Einsatz. Im Vergleich zu herk mmlichen Rillenkugellagern mindern die verbesserten Oberfl chenstrukturen von Laufbahnen und Kugeln die Ger uschentwicklung um 50 Prozent. In Verbindung mit einer verbesserten Oberfl chenqualit t sinkt die Reibung gleichzeitig um 35 Prozent. Das kleinere Reibmoment und die geringere W rmeentwicklung machen das Lager f r h here Drehzahlen bestens geeignet.
In einer von N sse und Staub gepr gten Umgebung spielt zudem die Dichtung eine entscheidende Rolle, wenn es um Zuverl ssigkeit und Energieeffizienz geht. Die neu entwickelte ELS-Dichtung (Efficient Lip Seal) bietet eine unschlagbare Kombination aus Zuverl ssigkeit und Energieeffizienz. So werden mit zunehmender Drehzahl das Reibmoment und damit die Verlustleistung des Radlagers deutlich reduziert - und das bei verbesserter Dichtwirkung. Die neue ELS-Dichtung erf llt also scheinbar gegens tzliche Anforderungen: Sie sorgt mit ihrer h heren Dichtwirkung f r einen besseren Schutz des Lagers und gleichzeitig f r besseren Leichtlauf.
Weitere Lagerstellen und Komponenten
Im Vorbau sorgen FAG-Schr gkugellager als Steuerkopflager in der Verbindungsstelle von Lenkervorbau und Fahrradgabel f r die n tige Pr zision und Sicherheit. Durch INA-Gleitlager mit ELGOGLIDE werden die beim Fahren auf die Standrohre der Federgabeln wirkenden Kr fte aufgenommen und bertragen. Im Antrieb des Elektromotors werden INA-H lsenfreil ufe als Einwegkupplungen eingesetzt. Sie bertragen dabei hohe Drehmomente in einer Richtung. Die FAG-Tretlagerwelle verbindet Pedale und Sensoreinheit im Antrieb. Eine Spezialbeschichtung mit Corrotect und verschiedene Kurbelaufnahmen werden optional angeboten.
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Schaeffler auf der EUROBIKE 2013 (Halle A3, Stand 807)
