| 摘要 |
A roller assembly is provided to reduce time required for maintenance and repair since a work in a small space of the roller at the bottom side is not needed. A roller assembly includes a holder(210), a main shaft(220), a roller(250), a sub shaft(230), and a fastener assembly(240). The holder has a holder hole(212) on the upper surface. The main shaft includes a shaft hole(225) passing through a shaft shim, a front end portion(223), a location limiting portion(226) at the lower side of the front end portion, and a lower end portion(228) at the lower side of the location limiting portion. The roller is installed on the lower end portion to slide and come in contact with a lower surface of the location limiting portion. The sub shaft is installed in the shaft hole, and a lower end of the shaft is equipped with a fixing portion, an inner surface of which comes in contact with a lower surface of the roller. The fastener assembly is locked on upper ends of the main shaft and the sub shaft.
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