Continuously variable transmission and method for manufacturing the same

A manufacturing method of a continuously variable transmission, the continuously variable transmission comprising:

• a first pulley having a first fixed sheave that is formed integrally with a first shaft or is fixed to the first shaft and a first movable sheave that is supported by the first shaft so as to be slidable in an axial direction of the first shaft;
• a first cylinder that forms a first oil chamber with the first movable sheave;
• a second pulley that has a second fixed sheave formed integrally with a second shaft or fixed to the second shaft and a second movable sheave that is supported by the second shaft so as to be slidable in the axial direction of the second shaft;
• a second cylinder that forms a second oil chamber with the second movable sheave;
• and
• a transmission belt that is wound around the first pulley and the second pulley, wherein
• the first cylinder has a first member that is fixed to the first shaft and a second member that is joined to an outer peripheral portion of the first member,
• a bearing is interposed between an outer periphery of the first member and an inner periphery of a case, and
• the manufacturing method comprising:
• a step (a) of forming the first member by a step at least including hot-forging, carburizing processing, quenching processing, and tempering processing, and forming the second member by press working so that a thickness of the second member is smaller than a thickness of a portion of the first member that is configured to directly abut against the first movable sheave;
• a step (b) of performing cutting to remove a carburized layer so that a portion of the first member that is to be joined to the second member is exposed, after the step (a);
• and
• a step (c) of joining the second member to the portion of the first member that is to be joined, after the step (b).