Ventilator for ventilation circuit of aircraft, has front and rear ball bearings interposed between shaft and support structure, where each bearing is mounted without grease and bearing parts or bearings are formed of ceramic material

The ventilator (10) has a wheel (16) carried by a shaft (26) coupled with an electric motor (24), and front and rear ball bearings (30, 32) interposed between the shaft and a support structure (20). Bearing elements i.e. balls (30C, 32C), or bearings are formed of ceramic material such as silicon ni...

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