To provide a spindle smoothly keeping spindle rotations for a long period of time in a spindle of separate motor-type.
This spindle for a fiber machine does not induce looseness between a spindle bolster 11 and a bolster engaging hole 43 in a short time because the spindle bolster 11 is engaged with a metal bush 40 whereas vibrations by a rotation of a spindle shaft 13 is transmitted to the spindle bolster 11. The metal bush 40 is molded with a synthetic resin material 30a in one body and is hardly loosened by vibrations of the spindle bolster 11 transmitted through the metal bush 40. Therefore, a rotation center of the spindle shaft 13 and a stator shaft center are prevented from loosening even in a long-tern use and a gap (t) between a rotor 21 and a stator 22 is suitable for a long period of time, then a separated motor 20 is smoothly rotated.
SATO TERUHIKO
SUZUKI SUSUMU
