Since the bearing capacity of such bearing portions increases with {HEAD ~ 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 the bearing capacity of such bearing portions increases with { HEAD ~ 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 OTH OTH OTH OTH OTH OTH OTH OTH OTH 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 TAIL TAIL TAIL TAIL TAIL TAIL