| 摘要 |
There is provided a spline telescopic shaft (5) having first and second shafts (35, 36) that are fitted to each other slidably in an axial direction (X1). First and second splines (37, 38) that engage with each other are respectively provided in the first and second shafts (35, 36). A resin coating (39; 139) that is provided on at least a tooth surface (37a) of the first spline (37) is fitted to a tooth surface (38a) of the second spline (38). The resin coating (39; 139) is subjected to heat fitting processing for sliding the first and second shafts (35, 36) in the axial direction (X1) under predetermined conditions, to fit a surface (39a; 139a) of the resin coating (39; 139) to the tooth surface (38a) of the second spline (38). |
