Since {HEAD ~ the bearing capacity} of such bearing portions increases with increase of the rotary speed of the device, the applicable range of revolutions per minute can be increased by the application of {TAIL ~ the invention} 
Since { HEAD ~ the bearing capacity } of such bearing portions increases with increase of the rotary speed of the device , the applicable range of revolutions per minute can be increased by the application of { TAIL ~ the invention }
OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL