Answer
The 'Plunger and Tapered Sleeve' method is used for high-volume automated assembly. A sleeve with a gradual internal taper is placed over the shaft, and a plunger pushes the spiral ring through the sleeve, expanding it uniformly until it snaps into the groove. This ensures even stress distribution and prevents permanent deformation. Manual 'winding' involves starting one end of the ring in the groove and walking the rest of the ring around the circumference. While winding requires no special tooling, it carries a higher risk of 'over-spreading' the ring or scratching the shaft surface. For rings with a radial wall $b > 6$ mm, manual installation becomes physically difficult, and the risk of the ring 'springing back' and causing injury or damage increases.
