There is provided a manufacturing method for a protective cover having a sensor holder part that maintains high reliability over the long term by increasing fixing strength between a cup-shaped main part and a synthetic resin through insert molding. A cup-...

The present invention is intended to provide a protective cover, comprising an inner ring 12 with an inner ring track surface 12A on an outer peripheral surface; an outer ring 13 with an outer ring track surface 13A on an inner peripheral surface; a bearin...

Machine component composed of metal and rubber that results in no increase of material costs for an adhesive or increase of manufacturing costs for metal molding, causes no contamination of the metal mold or generates no foreign matter on the metal mold du...