| 摘要 |
A pulley formed of resin having improved strength. The pulley includes a central body formed from a synthetic resin material. The main body has a belt-retaining portion along the outer peripheral surface thereof. A boss made of a metallic cylindrical body is embedded in the axial center of the main body. The boss is adapted to be secured to a rotary shaft. A plate-shaped metallic insert extends from an outer periphery of the boss to the interior of the main body. A plurality of service holes are formed in the insert, as is at least one engaging hole. The engaging hole is filled with the same synthetic resin material as the central body is formed of.
|
